Adding upstream version 4:24.2.0.upstream/4%24.2.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

48 files changed, 9088 insertions, 0 deletions

diff --git a/vcl/win/dtrans/APNDataObject.cxx b/vcl/win/dtrans/APNDataObject.cxx
new file mode 100644
index 0000000000..2492647f26
--- /dev/null
+++ b/vcl/win/dtrans/APNDataObject.cxx
@@ -0,0 +1,320 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "APNDataObject.hxx"
+#include <osl/diagnose.h>
+
+#include <systools/win32/comtools.hxx>
+
+#define FREE_HGLOB_ON_RELEASE   TRUE
+#define KEEP_HGLOB_ON_RELEASE   FALSE
+
+// ctor
+
+CAPNDataObject::CAPNDataObject( IDataObjectPtr rIDataObject ) :
+    m_rIDataObjectOrg( rIDataObject ),
+    m_hGlobal( nullptr ),
+    m_nRefCnt( 0 )
+{
+
+    OSL_ENSURE( m_rIDataObjectOrg.get( ), "constructing CAPNDataObject with empty data object" );
+
+    // we marshal the IDataObject interface pointer here so
+    // that it can be unmarshalled multiple times when this
+    // class will be used from another apartment
+    sal::systools::COMReference<IStream> pStm;
+    HRESULT hr = CreateStreamOnHGlobal( nullptr, KEEP_HGLOB_ON_RELEASE, &pStm );
+
+    OSL_ENSURE( E_INVALIDARG != hr, "invalid args passed to CreateStreamOnHGlobal" );
+
+    if ( SUCCEEDED( hr ) )
+    {
+        HRESULT hr_marshal = CoMarshalInterface(
+            pStm,
+            __uuidof(IDataObject),
+            m_rIDataObjectOrg,
+            MSHCTX_LOCAL,
+            nullptr,
+            MSHLFLAGS_TABLEWEAK );
+
+        OSL_ENSURE( CO_E_NOTINITIALIZED != hr_marshal, "COM is not initialized" );
+
+        // marshalling may fail if COM is not initialized
+        // for the calling thread which is a program time
+        // error or because of stream errors which are runtime
+        // errors for instance E_OUTOFMEMORY etc.
+
+        hr = GetHGlobalFromStream(pStm, &m_hGlobal );
+
+        OSL_ENSURE( E_INVALIDARG != hr, "invalid stream passed to GetHGlobalFromStream" );
+
+        // if the marshalling failed we free the
+        // global memory again and set m_hGlobal
+        // to a defined value
+        if (FAILED(hr_marshal))
+        {
+            OSL_FAIL("marshalling failed");
+
+            HGLOBAL hGlobal =
+                GlobalFree(m_hGlobal);
+            OSL_ENSURE(nullptr == hGlobal, "GlobalFree failed");
+            m_hGlobal = nullptr;
+        }
+    }
+}
+
+CAPNDataObject::~CAPNDataObject( )
+{
+    if (m_hGlobal)
+    {
+        sal::systools::COMReference<IStream> pStm;
+        HRESULT  hr = CreateStreamOnHGlobal(m_hGlobal, FREE_HGLOB_ON_RELEASE, &pStm);
+
+        OSL_ENSURE( E_INVALIDARG != hr, "invalid args passed to CreateStreamOnHGlobal" );
+
+        if (SUCCEEDED(hr))
+        {
+            hr = CoReleaseMarshalData(pStm);
+            OSL_ENSURE(SUCCEEDED(hr), "CoReleaseMarshalData failed");
+        }
+    }
+}
+
+// IUnknown->QueryInterface
+
+STDMETHODIMP CAPNDataObject::QueryInterface( REFIID iid, void** ppvObject )
+{
+    OSL_ASSERT( nullptr != ppvObject );
+
+    if ( nullptr == ppvObject )
+        return E_INVALIDARG;
+
+    HRESULT hr = E_NOINTERFACE;
+    *ppvObject = nullptr;
+
+    if ( ( __uuidof( IUnknown ) == iid ) || ( __uuidof( IDataObject ) == iid ) )
+    {
+        *ppvObject = static_cast< IUnknown* >( this );
+        AddRef( );
+        hr = S_OK;
+    }
+
+    return hr;
+}
+
+// IUnknown->AddRef
+
+STDMETHODIMP_(ULONG) CAPNDataObject::AddRef( )
+{
+    return static_cast< ULONG >( InterlockedIncrement( &m_nRefCnt ) );
+}
+
+// IUnknown->Release
+
+STDMETHODIMP_(ULONG) CAPNDataObject::Release( )
+{
+    // we need a helper variable because it's not allowed to access
+    // a member variable after an object is destroyed
+    ULONG nRefCnt = static_cast< ULONG >( InterlockedDecrement( &m_nRefCnt ) );
+
+    if ( 0 == nRefCnt )
+        delete this;
+
+    return nRefCnt;
+}
+
+// IDataObject->GetData
+
+STDMETHODIMP CAPNDataObject::GetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium )
+{
+    HRESULT hr = m_rIDataObjectOrg->GetData( pFormatetc, pmedium );
+
+    if (RPC_E_WRONG_THREAD == hr)
+    {
+        IDataObjectPtr pIDOTmp;
+        hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp);
+
+        if (SUCCEEDED(hr))
+            hr = pIDOTmp->GetData(pFormatetc, pmedium);
+    }
+    return hr;
+}
+
+// IDataObject->EnumFormatEtc
+
+STDMETHODIMP CAPNDataObject::EnumFormatEtc( DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc )
+{
+    HRESULT hr = m_rIDataObjectOrg->EnumFormatEtc(dwDirection, ppenumFormatetc);
+
+    if (RPC_E_WRONG_THREAD == hr)
+    {
+        IDataObjectPtr pIDOTmp;
+        hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp);
+
+        if (SUCCEEDED(hr))
+            hr = pIDOTmp->EnumFormatEtc(dwDirection, ppenumFormatetc);
+    }
+    return hr;
+}
+
+// IDataObject->QueryGetData
+
+STDMETHODIMP CAPNDataObject::QueryGetData( FORMATETC * pFormatetc )
+{
+    HRESULT hr = m_rIDataObjectOrg->QueryGetData( pFormatetc );
+
+    if (RPC_E_WRONG_THREAD == hr)
+    {
+        IDataObjectPtr pIDOTmp;
+        hr = MarshalIDataObjectIntoCurrentApartment( &pIDOTmp );
+
+        if (SUCCEEDED(hr))
+            hr = pIDOTmp->QueryGetData(pFormatetc);
+    }
+    return hr;
+}
+
+// IDataObject->GetDataHere
+
+STDMETHODIMP CAPNDataObject::GetDataHere( FORMATETC * pFormatetc, STGMEDIUM * pmedium )
+{
+    HRESULT hr = m_rIDataObjectOrg->GetDataHere(pFormatetc, pmedium);
+
+    if (RPC_E_WRONG_THREAD == hr)
+    {
+        IDataObjectPtr pIDOTmp;
+        hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp);
+
+        if (SUCCEEDED(hr))
+            hr = pIDOTmp->GetDataHere(pFormatetc, pmedium);
+    }
+    return hr;
+}
+
+// IDataObject->GetCanonicalFormatEtc
+
+STDMETHODIMP CAPNDataObject::GetCanonicalFormatEtc(FORMATETC * pFormatectIn, FORMATETC * pFormatetcOut)
+{
+    HRESULT hr = m_rIDataObjectOrg->GetCanonicalFormatEtc( pFormatectIn, pFormatetcOut );
+
+    if (RPC_E_WRONG_THREAD == hr)
+    {
+        IDataObjectPtr pIDOTmp;
+        hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp);
+
+        if (SUCCEEDED(hr))
+            hr = pIDOTmp->GetCanonicalFormatEtc(pFormatectIn, pFormatetcOut);
+    }
+    return hr;
+}
+
+// IDataObject->SetData
+
+STDMETHODIMP CAPNDataObject::SetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium, BOOL fRelease )
+{
+    HRESULT hr = m_rIDataObjectOrg->SetData( pFormatetc, pmedium, fRelease );
+
+    if (RPC_E_WRONG_THREAD == hr)
+    {
+        IDataObjectPtr pIDOTmp;
+        hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp);
+
+        if (SUCCEEDED(hr))
+            hr = pIDOTmp->SetData(pFormatetc, pmedium, fRelease);
+    }
+    return hr;
+}
+
+// IDataObject->DAdvise
+
+STDMETHODIMP CAPNDataObject::DAdvise( FORMATETC * pFormatetc, DWORD advf, IAdviseSink * pAdvSink, DWORD * pdwConnection )
+{
+    HRESULT hr = m_rIDataObjectOrg->DAdvise(pFormatetc, advf, pAdvSink, pdwConnection);
+
+    if (RPC_E_WRONG_THREAD == hr)
+    {
+        IDataObjectPtr pIDOTmp;
+        hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp);
+
+        if (SUCCEEDED(hr))
+            hr = pIDOTmp->DAdvise(pFormatetc, advf, pAdvSink, pdwConnection);
+    }
+    return hr;
+}
+
+// IDataObject->DUnadvise
+
+STDMETHODIMP CAPNDataObject::DUnadvise( DWORD dwConnection )
+{
+    HRESULT hr = m_rIDataObjectOrg->DUnadvise( dwConnection );
+
+    if (RPC_E_WRONG_THREAD == hr)
+    {
+        IDataObjectPtr pIDOTmp;
+        hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp);
+
+        if (SUCCEEDED(hr))
+            hr = pIDOTmp->DUnadvise(dwConnection);
+    }
+    return hr;
+}
+
+// IDataObject->EnumDAdvise
+
+STDMETHODIMP CAPNDataObject::EnumDAdvise( IEnumSTATDATA ** ppenumAdvise )
+{
+    HRESULT hr = m_rIDataObjectOrg->EnumDAdvise(ppenumAdvise);
+
+    if (RPC_E_WRONG_THREAD == hr)
+    {
+        IDataObjectPtr pIDOTmp;
+        hr = MarshalIDataObjectIntoCurrentApartment(&pIDOTmp);
+
+        if (SUCCEEDED(hr))
+            hr = pIDOTmp->EnumDAdvise(ppenumAdvise);
+    }
+    return hr;
+}
+
+// helper function
+
+HRESULT CAPNDataObject::MarshalIDataObjectIntoCurrentApartment( IDataObject** ppIDataObj )
+{
+    OSL_ASSERT(nullptr != ppIDataObj);
+
+    *ppIDataObj = nullptr;
+    HRESULT hr = E_FAIL;
+
+    if (m_hGlobal)
+    {
+        sal::systools::COMReference<IStream> pStm;
+        hr = CreateStreamOnHGlobal(m_hGlobal, KEEP_HGLOB_ON_RELEASE, &pStm);
+
+        OSL_ENSURE(E_INVALIDARG != hr, "CreateStreamOnHGlobal with invalid args called");
+
+        if (SUCCEEDED(hr))
+        {
+            hr = CoUnmarshalInterface(pStm, IID_PPV_ARGS(ppIDataObj));
+            OSL_ENSURE(CO_E_NOTINITIALIZED != hr, "COM is not initialized");
+        }
+    }
+    return hr;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/APNDataObject.hxx b/vcl/win/dtrans/APNDataObject.hxx
new file mode 100644
index 0000000000..5de8ccfcc8
--- /dev/null
+++ b/vcl/win/dtrans/APNDataObject.hxx
@@ -0,0 +1,74 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <objidl.h>
+
+#include <systools/win32/comtools.hxx>
+
+/*
+    an APartment Neutral dataobject wrapper; this wrapper of an IDataObject
+    pointer can be used from any apartment without RPC_E_WRONG_THREAD
+    which normally occurs if an apartment tries to use an interface
+    pointer of another apartment; we use containment to hold the original
+    DataObject
+*/
+class CAPNDataObject : public IDataObject
+{
+public:
+    explicit CAPNDataObject(IDataObjectPtr rIDataObject);
+    virtual ~CAPNDataObject();
+
+    //IUnknown interface methods
+
+    STDMETHODIMP           QueryInterface(REFIID iid, void** ppvObject) override;
+    STDMETHODIMP_( ULONG ) AddRef( ) override;
+    STDMETHODIMP_( ULONG ) Release( ) override;
+
+    // IDataObject interface methods
+
+    STDMETHODIMP GetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) override;
+    STDMETHODIMP GetDataHere( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) override;
+    STDMETHODIMP QueryGetData( FORMATETC * pFormatetc ) override;
+    STDMETHODIMP GetCanonicalFormatEtc( FORMATETC * pFormatectIn, FORMATETC * pFormatetcOut ) override;
+    STDMETHODIMP SetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium, BOOL fRelease ) override;
+    STDMETHODIMP EnumFormatEtc( DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc ) override;
+    STDMETHODIMP DAdvise( FORMATETC * pFormatetc, DWORD advf, IAdviseSink * pAdvSink, DWORD* pdwConnection ) override;
+    STDMETHODIMP DUnadvise( DWORD dwConnection ) override;
+    STDMETHODIMP EnumDAdvise( IEnumSTATDATA** ppenumAdvise ) override;
+
+private:
+    HRESULT MarshalIDataObjectIntoCurrentApartment( IDataObject** ppIDataObj );
+
+private:
+    IDataObjectPtr  m_rIDataObjectOrg;
+    HGLOBAL         m_hGlobal;
+    LONG            m_nRefCnt;
+
+// prevent copy and assignment
+private:
+    CAPNDataObject( const CAPNDataObject& theOther ) = delete;
+    CAPNDataObject& operator=( const CAPNDataObject& theOther ) = delete;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/DOTransferable.cxx b/vcl/win/dtrans/DOTransferable.cxx
new file mode 100644
index 0000000000..c2b54bf83a
--- /dev/null
+++ b/vcl/win/dtrans/DOTransferable.cxx
@@ -0,0 +1,577 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/types.h>
+#include <rtl/process.h>
+#include <osl/diagnose.h>
+#include <sal/log.hxx>
+
+#include "DOTransferable.hxx"
+#include "ImplHelper.hxx"
+#include "WinClip.hxx"
+#include "WinClipboard.hxx"
+#include "DTransHelper.hxx"
+#include "TxtCnvtHlp.hxx"
+#include "MimeAttrib.hxx"
+#include "FmtFilter.hxx"
+#include "Fetc.hxx"
+#include <com/sun/star/container/NoSuchElementException.hpp>
+#include <com/sun/star/datatransfer/MimeContentTypeFactory.hpp>
+#include <com/sun/star/datatransfer/UnsupportedFlavorException.hpp>
+#include <com/sun/star/io/IOException.hpp>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+
+using namespace osl;
+using namespace cppu;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::io;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::container;
+
+namespace
+{
+    const Type CPPUTYPE_SEQINT8  = cppu::UnoType<Sequence< sal_Int8 >>::get();
+    const Type CPPUTYPE_OUSTRING = cppu::UnoType<OUString>::get();
+
+    bool isValidFlavor( const DataFlavor& aFlavor )
+    {
+        return ( aFlavor.MimeType.getLength( ) &&
+                 ( ( aFlavor.DataType ==  CPPUTYPE_SEQINT8 ) ||
+                 ( aFlavor.DataType == CPPUTYPE_OUSTRING ) ) );
+    }
+
+void clipDataToByteStream( CLIPFORMAT cf, STGMEDIUM stgmedium, CDOTransferable::ByteSequence_t& aByteSequence )
+{
+    CStgTransferHelper memTransferHelper;
+    LPSTREAM pStream = nullptr;
+
+    switch( stgmedium.tymed )
+    {
+    case TYMED_HGLOBAL:
+        memTransferHelper.init( stgmedium.hGlobal );
+        break;
+
+    case TYMED_MFPICT:
+        memTransferHelper.init( stgmedium.hMetaFilePict );
+        break;
+
+    case TYMED_ENHMF:
+        memTransferHelper.init( stgmedium.hEnhMetaFile );
+        break;
+
+    case TYMED_ISTREAM:
+        pStream = stgmedium.pstm;
+        break;
+
+    default:
+        throw UnsupportedFlavorException( );
+        break;
+    }
+
+    if (pStream)
+    {
+        // We have a stream, read from it.
+        STATSTG aStat;
+        HRESULT hr = pStream->Stat(&aStat, STATFLAG_NONAME);
+        if (FAILED(hr))
+        {
+            SAL_WARN("vcl.win.dtrans", "clipDataToByteStream: Stat() failed");
+            return;
+        }
+
+        size_t nMemSize = aStat.cbSize.QuadPart;
+        aByteSequence.realloc(nMemSize);
+        LARGE_INTEGER li;
+        li.QuadPart = 0;
+        hr = pStream->Seek(li, STREAM_SEEK_SET, nullptr);
+        if (FAILED(hr))
+        {
+            SAL_WARN("vcl.win.dtrans", "clipDataToByteStream: Seek() failed");
+        }
+
+        ULONG nRead = 0;
+        hr = pStream->Read(aByteSequence.getArray(), nMemSize, &nRead);
+        if (FAILED(hr))
+        {
+            SAL_WARN("vcl.win.dtrans", "clipDataToByteStream: Read() failed");
+        }
+        if (nRead < nMemSize)
+        {
+            SAL_WARN("vcl.win.dtrans", "clipDataToByteStream: Read() was partial");
+        }
+
+        return;
+    }
+
+    int nMemSize = memTransferHelper.memSize( cf );
+    aByteSequence.realloc( nMemSize );
+    memTransferHelper.read( aByteSequence.getArray( ), nMemSize );
+}
+
+OUString byteStreamToOUString( CDOTransferable::ByteSequence_t& aByteStream )
+{
+    sal_Int32 nWChars;
+    sal_Int32 nMemSize = aByteStream.getLength( );
+
+    // if there is a trailing L"\0" subtract 1 from length
+    // for unknown reason, the sequence may sometimes arrive empty
+    if ( aByteStream.getLength( ) > 1 &&
+         0 == aByteStream[ aByteStream.getLength( ) - 2 ] &&
+         0 == aByteStream[ aByteStream.getLength( ) - 1 ] )
+        nWChars = static_cast< sal_Int32 >( nMemSize / sizeof( sal_Unicode ) ) - 1;
+    else
+        nWChars = static_cast< sal_Int32 >( nMemSize / sizeof( sal_Unicode ) );
+
+    return OUString( reinterpret_cast< sal_Unicode* >( aByteStream.getArray( ) ), nWChars );
+}
+
+Any byteStreamToAny( CDOTransferable::ByteSequence_t& aByteStream, const Type& aRequestedDataType )
+{
+    Any aAny;
+
+    if ( aRequestedDataType == CPPUTYPE_OUSTRING )
+    {
+        OUString str = byteStreamToOUString( aByteStream );
+        if (str.isEmpty())
+            throw RuntimeException();
+        aAny <<= str;
+    }
+    else
+        aAny <<= aByteStream;
+
+    return aAny;
+}
+
+bool cmpFullMediaType(
+    const Reference< XMimeContentType >& xLhs, const Reference< XMimeContentType >& xRhs )
+{
+    return xLhs->getFullMediaType().equalsIgnoreAsciiCase( xRhs->getFullMediaType( ) );
+}
+
+bool cmpAllContentTypeParameter(
+    const Reference< XMimeContentType >& xLhs, const Reference< XMimeContentType >& xRhs )
+{
+    Sequence< OUString > xLhsFlavors = xLhs->getParameters( );
+    Sequence< OUString > xRhsFlavors = xRhs->getParameters( );
+    bool bRet = true;
+
+    try
+    {
+        if ( xLhsFlavors.getLength( ) == xRhsFlavors.getLength( ) )
+        {
+            OUString pLhs;
+            OUString pRhs;
+
+            for ( sal_Int32 i = 0; i < xLhsFlavors.getLength( ); i++ )
+            {
+                pLhs = xLhs->getParameterValue( xLhsFlavors[i] );
+                pRhs = xRhs->getParameterValue( xLhsFlavors[i] );
+
+                if ( !pLhs.equalsIgnoreAsciiCase( pRhs ) )
+                {
+                    bRet = false;
+                    break;
+                }
+            }
+        }
+        else
+            bRet = false;
+    }
+    catch( NoSuchElementException& )
+    {
+        bRet = false;
+    }
+    catch( IllegalArgumentException& )
+    {
+        bRet = false;
+    }
+
+    return bRet;
+}
+
+} // end namespace
+
+CDOTransferable::CDOTransferable(
+    const Reference< XComponentContext >& rxContext, IDataObjectPtr rDataObject ) :
+    m_rDataObject( rDataObject ),
+    m_xContext( rxContext ),
+    m_DataFormatTranslator( rxContext ),
+    m_bUnicodeRegistered( false ),
+    m_TxtFormatOnClipboard( CF_INVALID )
+{
+    initFlavorList();
+}
+
+CDOTransferable::CDOTransferable(
+    const Reference<XComponentContext>& rxContext,
+    const css::uno::Reference<css::datatransfer::clipboard::XClipboard>& xClipboard,
+    const std::vector<sal_uInt32>& rFormats)
+    : m_xClipboard(xClipboard)
+    , m_xContext(rxContext)
+    , m_DataFormatTranslator(rxContext)
+    , m_bUnicodeRegistered(false)
+    , m_TxtFormatOnClipboard(CF_INVALID)
+{
+    initFlavorListFromFormatList(rFormats);
+}
+
+Any SAL_CALL CDOTransferable::getTransferData( const DataFlavor& aFlavor )
+{
+    OSL_ASSERT( isValidFlavor( aFlavor ) );
+
+    std::unique_lock aGuard( m_aMutex );
+
+    // convert dataflavor to formatetc
+
+    CFormatEtc fetc = m_DataFormatTranslator.getFormatEtcFromDataFlavor( aFlavor );
+    OSL_ASSERT( CF_INVALID != fetc.getClipformat() );
+
+    //  get the data from clipboard in a byte stream
+
+    ByteSequence_t clipDataStream;
+
+    try
+    {
+        clipDataStream = getClipboardData( fetc );
+    }
+    catch( UnsupportedFlavorException& )
+    {
+        if ( CDataFormatTranslator::isUnicodeTextFormat( fetc.getClipformat( ) ) &&
+             m_bUnicodeRegistered )
+        {
+             OUString aUnicodeText = synthesizeUnicodeText( );
+             Any aAny( aUnicodeText );
+             return aAny;
+        }
+        // #i124085# CF_DIBV5 should not be possible, but keep for reading from the
+        // clipboard for being on the safe side
+        else if(CF_DIBV5 == fetc.getClipformat())
+        {
+            // #i123407# CF_DIBV5 has priority; if the try to fetch this failed,
+            // check CF_DIB availability as an alternative
+            fetc.setClipformat(CF_DIB);
+
+            clipDataStream = getClipboardData( fetc );
+                // pass UnsupportedFlavorException out, tried all possibilities
+        }
+        else
+            throw; // pass through exception
+    }
+
+    // return the data as any
+
+    return byteStreamToAny( clipDataStream, aFlavor.DataType );
+}
+
+// getTransferDataFlavors
+
+Sequence< DataFlavor > SAL_CALL CDOTransferable::getTransferDataFlavors(  )
+{
+    return m_FlavorList;
+}
+
+// isDataFlavorSupported
+// returns true if we find a DataFlavor with the same MimeType and
+// DataType
+
+sal_Bool SAL_CALL CDOTransferable::isDataFlavorSupported( const DataFlavor& aFlavor )
+{
+    OSL_ASSERT( isValidFlavor( aFlavor ) );
+
+    for ( DataFlavor const & df : std::as_const(m_FlavorList) )
+        if ( compareDataFlavors( aFlavor, df ) )
+            return true;
+
+    return false;
+}
+
+// the list of dataflavors currently on the clipboard will be initialized
+// only once; if the client of this Transferable will hold a reference
+// to it and the underlying clipboard content changes, the client does
+// possible operate on an invalid list
+// if there is only text on the clipboard we will also offer unicode text
+// an synthesize this format on the fly if requested, to accomplish this
+// we save the first offered text format which we will later use for the
+// conversion
+
+void CDOTransferable::initFlavorList( )
+{
+    std::vector<sal_uInt32> aFormats;
+    sal::systools::COMReference<IEnumFORMATETC> pEnumFormatEtc;
+    HRESULT hr = m_rDataObject->EnumFormatEtc( DATADIR_GET, &pEnumFormatEtc );
+    if ( SUCCEEDED( hr ) )
+    {
+        pEnumFormatEtc->Reset( );
+
+        FORMATETC fetc;
+        while ( S_OK == pEnumFormatEtc->Next( 1, &fetc, nullptr ) )
+        {
+            aFormats.push_back(fetc.cfFormat);
+            // see MSDN IEnumFORMATETC
+            CoTaskMemFree( fetc.ptd );
+        }
+        initFlavorListFromFormatList(aFormats);
+    }
+}
+
+void CDOTransferable::initFlavorListFromFormatList(const std::vector<sal_uInt32>& rFormats)
+{
+    for (sal_uInt32 cfFormat : rFormats)
+    {
+        // we use locales only to determine the
+        // charset if there is text on the clipboard
+        // we don't offer this format
+        if (CF_LOCALE == cfFormat)
+            continue;
+
+        // if text or oemtext is offered we pretend to have unicode text
+        if (CDataFormatTranslator::isTextFormat(cfFormat))
+        {
+            if (!m_bUnicodeRegistered)
+            {
+                m_TxtFormatOnClipboard = cfFormat;
+                m_bUnicodeRegistered   = true;
+
+                // register unicode text as format
+                addSupportedFlavor(formatEtcToDataFlavor(CF_UNICODETEXT));
+            }
+        }
+        else
+            addSupportedFlavor(formatEtcToDataFlavor(cfFormat));
+    }
+}
+
+inline
+void CDOTransferable::addSupportedFlavor( const DataFlavor& aFlavor )
+{
+    // we ignore all formats that couldn't be translated
+    if ( aFlavor.MimeType.getLength( ) )
+    {
+        OSL_ASSERT( isValidFlavor( aFlavor ) );
+
+        m_FlavorList.realloc( m_FlavorList.getLength( ) + 1 );
+        m_FlavorList.getArray()[m_FlavorList.getLength( ) - 1] = aFlavor;
+    }
+}
+
+DataFlavor CDOTransferable::formatEtcToDataFlavor(sal_uInt32 cfFormat)
+{
+    return m_DataFormatTranslator.getDataFlavorFromFormatEtc(cfFormat);
+}
+
+// returns the current locale on clipboard; if there is no locale on
+// clipboard the function returns the current thread locale
+
+LCID CDOTransferable::getLocaleFromClipboard( )
+{
+    LCID lcid = GetThreadLocale( );
+
+    try
+    {
+        CFormatEtc fetc = CDataFormatTranslator::getFormatEtcForClipformat( CF_LOCALE );
+        ByteSequence_t aLCIDSeq = getClipboardData( fetc );
+        lcid = *reinterpret_cast<LCID*>( aLCIDSeq.getArray( ) );
+
+        // because of a Win95/98 Bug; there the high word
+        // of a locale has the same value as the
+        // low word e.g. 0x07040704 that's not right
+        // correct is 0x00000704
+        lcid &= 0x0000FFFF;
+    }
+    catch(...)
+    {
+        // we take the default locale
+    }
+
+    return lcid;
+}
+
+void CDOTransferable::tryToGetIDataObjectIfAbsent()
+{
+    if (!m_rDataObject.is())
+    {
+        auto xClipboard = m_xClipboard.get(); // holding the reference while we get the object
+        if (CWinClipboard* pWinClipboard = dynamic_cast<CWinClipboard*>(xClipboard.get()))
+        {
+            m_rDataObject = pWinClipboard->getIDataObject();
+        }
+    }
+}
+
+// I think it's not necessary to call ReleaseStgMedium
+// in case of failures because nothing should have been
+// allocated etc.
+
+CDOTransferable::ByteSequence_t CDOTransferable::getClipboardData( CFormatEtc& aFormatEtc )
+{
+    STGMEDIUM stgmedium;
+    tryToGetIDataObjectIfAbsent();
+    if (!m_rDataObject.is()) // Maybe we are shutting down, and clipboard is already destroyed?
+        throw RuntimeException();
+    HRESULT hr = m_rDataObject->GetData( aFormatEtc, &stgmedium );
+
+    // in case of failure to get a WMF metafile handle, try to get a memory block
+    if( FAILED( hr ) &&
+        ( CF_METAFILEPICT == aFormatEtc.getClipformat() ) &&
+        ( TYMED_MFPICT == aFormatEtc.getTymed() ) )
+    {
+        CFormatEtc aTempFormat( aFormatEtc );
+        aTempFormat.setTymed( TYMED_HGLOBAL );
+        hr = m_rDataObject->GetData( aTempFormat, &stgmedium );
+    }
+
+    if (FAILED(hr) && aFormatEtc.getTymed() == TYMED_HGLOBAL)
+    {
+        // Handle type is not memory, try stream.
+        CFormatEtc aTempFormat(aFormatEtc);
+        aTempFormat.setTymed(TYMED_ISTREAM);
+        hr = m_rDataObject->GetData(aTempFormat, &stgmedium);
+    }
+
+    if ( FAILED( hr ) )
+    {
+        OSL_ASSERT( (hr != E_INVALIDARG) &&
+                    (hr != DV_E_DVASPECT) &&
+                    (hr != DV_E_LINDEX) &&
+                    (hr != DV_E_TYMED) );
+
+        if ( DV_E_FORMATETC == hr )
+            throw UnsupportedFlavorException( );
+        else if ( STG_E_MEDIUMFULL == hr )
+            throw IOException( );
+        else
+            throw RuntimeException( );
+    }
+
+    ByteSequence_t byteStream;
+
+    try
+    {
+        if ( CF_ENHMETAFILE == aFormatEtc.getClipformat() )
+            byteStream = WinENHMFPictToOOMFPict( stgmedium.hEnhMetaFile );
+        else if (CF_HDROP == aFormatEtc.getClipformat())
+            byteStream = CF_HDROPToFileList(stgmedium.hGlobal);
+        else if ( CF_BITMAP == aFormatEtc.getClipformat() )
+        {
+            byteStream = WinBITMAPToOOBMP(stgmedium.hBitmap);
+            if( aFormatEtc.getTymed() == TYMED_GDI &&
+                ! stgmedium.pUnkForRelease )
+            {
+                DeleteObject(stgmedium.hBitmap);
+            }
+        }
+        else
+        {
+            clipDataToByteStream( aFormatEtc.getClipformat( ), stgmedium, byteStream );
+
+            // format conversion if necessary
+            // #i124085# DIBV5 should not happen currently, but keep as a hint here
+            if(CF_DIBV5 == aFormatEtc.getClipformat() || CF_DIB == aFormatEtc.getClipformat())
+            {
+                byteStream = WinDIBToOOBMP(byteStream);
+            }
+            else if(CF_METAFILEPICT == aFormatEtc.getClipformat())
+            {
+                byteStream = WinMFPictToOOMFPict(byteStream);
+            }
+        }
+
+        ReleaseStgMedium( &stgmedium );
+    }
+    catch( CStgTransferHelper::CStgTransferException& )
+    {
+        ReleaseStgMedium( &stgmedium );
+        throw IOException( );
+    }
+
+    return byteStream;
+}
+
+OUString CDOTransferable::synthesizeUnicodeText( )
+{
+    ByteSequence_t aTextSequence;
+    CFormatEtc     fetc;
+    LCID           lcid = getLocaleFromClipboard( );
+    sal_uInt32     cpForTxtCnvt = 0;
+
+    if ( CF_TEXT == m_TxtFormatOnClipboard )
+    {
+        fetc = CDataFormatTranslator::getFormatEtcForClipformat( CF_TEXT );
+        aTextSequence = getClipboardData( fetc );
+
+        // determine the codepage used for text conversion
+        cpForTxtCnvt = getWinCPFromLocaleId( lcid, LOCALE_IDEFAULTANSICODEPAGE ).toInt32( );
+    }
+    else if ( CF_OEMTEXT == m_TxtFormatOnClipboard )
+    {
+        fetc = CDataFormatTranslator::getFormatEtcForClipformat( CF_OEMTEXT );
+        aTextSequence = getClipboardData( fetc );
+
+        // determine the codepage used for text conversion
+        cpForTxtCnvt = getWinCPFromLocaleId( lcid, LOCALE_IDEFAULTCODEPAGE ).toInt32( );
+    }
+    else
+        OSL_ASSERT( false );
+
+    CStgTransferHelper stgTransferHelper;
+
+    // convert the text
+    MultiByteToWideCharEx( cpForTxtCnvt,
+                           reinterpret_cast<char*>( aTextSequence.getArray( ) ),
+                           -1,
+                           stgTransferHelper,
+                           false);
+
+    CRawHGlobalPtr  ptrHGlob(stgTransferHelper);
+    sal_Unicode*    pWChar = static_cast<sal_Unicode*>(ptrHGlob.GetMemPtr());
+
+    return OUString(pWChar);
+}
+
+bool CDOTransferable::compareDataFlavors(
+    const DataFlavor& lhs, const DataFlavor& rhs )
+{
+    if ( !m_rXMimeCntFactory.is( ) )
+    {
+        m_rXMimeCntFactory = MimeContentTypeFactory::create( m_xContext );
+    }
+
+    bool bRet = false;
+
+    try
+    {
+        Reference< XMimeContentType > xLhs( m_rXMimeCntFactory->createMimeContentType( lhs.MimeType ) );
+        Reference< XMimeContentType > xRhs( m_rXMimeCntFactory->createMimeContentType( rhs.MimeType ) );
+
+        if ( cmpFullMediaType( xLhs, xRhs ) )
+        {
+            bRet = cmpAllContentTypeParameter( xLhs, xRhs );
+        }
+    }
+    catch( IllegalArgumentException& )
+    {
+        OSL_FAIL( "Invalid content type detected" );
+        bRet = false;
+    }
+
+    return bRet;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/DOTransferable.hxx b/vcl/win/dtrans/DOTransferable.hxx
new file mode 100644
index 0000000000..1824c7b448
--- /dev/null
+++ b/vcl/win/dtrans/DOTransferable.hxx
@@ -0,0 +1,98 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include "DataFmtTransl.hxx"
+#include <com/sun/star/datatransfer/clipboard/XClipboard.hpp>
+#include <com/sun/star/datatransfer/XMimeContentTypeFactory.hpp>
+#include <com/sun/star/datatransfer/XMimeContentType.hpp>
+#include <com/sun/star/datatransfer/XSystemTransferable.hpp>
+#include <cppuhelper/weakref.hxx>
+
+#include <systools/win32/comtools.hxx>
+
+#include <mutex>
+#include <vector>
+
+// forward
+class CFormatEtc;
+
+class CDOTransferable : public ::cppu::WeakImplHelper<
+                            css::datatransfer::XTransferable>
+{
+public:
+    typedef css::uno::Sequence< sal_Int8 > ByteSequence_t;
+
+    // XTransferable
+
+    virtual css::uno::Any SAL_CALL getTransferData( const css::datatransfer::DataFlavor& aFlavor ) override;
+
+    virtual css::uno::Sequence< css::datatransfer::DataFlavor > SAL_CALL getTransferDataFlavors(  ) override;
+
+    virtual sal_Bool SAL_CALL isDataFlavorSupported( const css::datatransfer::DataFlavor& aFlavor ) override;
+
+    explicit CDOTransferable(
+        const css::uno::Reference< css::uno::XComponentContext >& rxContext,
+        const css::uno::Reference<css::datatransfer::clipboard::XClipboard>& xClipboard,
+        const std::vector<sal_uInt32>& rFormats);
+
+    explicit CDOTransferable(
+        const css::uno::Reference< css::uno::XComponentContext >& rxContext,
+        IDataObjectPtr rDataObject );
+
+private:
+    // some helper functions
+
+    void initFlavorList( );
+    void initFlavorListFromFormatList(const std::vector<sal_uInt32>& rFormats);
+
+    void addSupportedFlavor( const css::datatransfer::DataFlavor& aFlavor );
+    css::datatransfer::DataFlavor formatEtcToDataFlavor(sal_uInt32 cfFormat);
+
+    void tryToGetIDataObjectIfAbsent();
+    ByteSequence_t getClipboardData( CFormatEtc& aFormatEtc );
+    OUString synthesizeUnicodeText( );
+
+    LCID getLocaleFromClipboard( );
+
+    bool compareDataFlavors( const css::datatransfer::DataFlavor& lhs,
+                                          const css::datatransfer::DataFlavor& rhs );
+
+private:
+    css::uno::WeakReference<css::datatransfer::clipboard::XClipboard> m_xClipboard;
+    IDataObjectPtr                                                                          m_rDataObject;
+    css::uno::Sequence< css::datatransfer::DataFlavor >               m_FlavorList;
+    const css::uno::Reference< css::uno::XComponentContext >          m_xContext;
+    CDataFormatTranslator                                             m_DataFormatTranslator;
+    css::uno::Reference< css::datatransfer::XMimeContentTypeFactory > m_rXMimeCntFactory;
+    std::mutex                                                        m_aMutex;
+    bool                                                              m_bUnicodeRegistered;
+    CLIPFORMAT                                                        m_TxtFormatOnClipboard;
+
+// non supported operations
+private:
+    CDOTransferable( const CDOTransferable& );
+    CDOTransferable& operator=( const CDOTransferable& );
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/DTransHelper.cxx b/vcl/win/dtrans/DTransHelper.cxx
new file mode 100644
index 0000000000..66d18f9fb5
--- /dev/null
+++ b/vcl/win/dtrans/DTransHelper.cxx
@@ -0,0 +1,205 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <rtl/ustring.h>
+#include <osl/diagnose.h>
+#include "DTransHelper.hxx"
+
+// implementation
+
+CStgTransferHelper::CStgTransferHelper( bool bAutoInit,
+                                        HGLOBAL hGlob,
+                                        bool bDelStgOnRelease ) :
+    m_lpStream( nullptr ),
+    m_bDelStgOnRelease( bDelStgOnRelease )
+{
+    if ( bAutoInit )
+        init( hGlob, m_bDelStgOnRelease );
+}
+
+// dtor
+
+CStgTransferHelper::~CStgTransferHelper( )
+{
+    if ( m_lpStream )
+        m_lpStream->Release( );
+}
+
+// TransferData into the
+
+void CStgTransferHelper::write( const void* lpData, ULONG cb, ULONG* cbWritten )
+{
+    HRESULT hr = E_FAIL;
+
+    if ( m_lpStream )
+        hr = m_lpStream->Write( lpData, cb, cbWritten );
+
+    if ( FAILED( hr ) )
+        throw CStgTransferException( hr );
+
+#if OSL_DEBUG_LEVEL > 0
+    HGLOBAL hGlob;
+    hr = GetHGlobalFromStream( m_lpStream, &hGlob );
+    OSL_ASSERT( SUCCEEDED( hr ) );
+
+    /*DWORD dwSize =*/ GlobalSize( hGlob );
+    /*LPVOID lpdbgData =*/ GlobalLock( hGlob );
+    GlobalUnlock( hGlob );
+#endif
+}
+
+// read
+
+void CStgTransferHelper::read( LPVOID pv, ULONG cb, ULONG* pcbRead )
+{
+    HRESULT hr = E_FAIL;
+
+    if ( m_lpStream )
+        hr = m_lpStream->Read( pv, cb , pcbRead );
+
+    if ( FAILED( hr ) )
+        throw CStgTransferException( hr );
+}
+
+// GetHGlobal
+
+HGLOBAL CStgTransferHelper::getHGlobal( ) const
+{
+    OSL_ASSERT( m_lpStream );
+
+    HGLOBAL hGlob = nullptr;
+
+    if ( m_lpStream )
+    {
+        HRESULT hr = GetHGlobalFromStream( m_lpStream, &hGlob );
+        if ( FAILED( hr ) )
+            hGlob = nullptr;
+    }
+
+    return hGlob;
+}
+
+// getIStream
+
+void CStgTransferHelper::getIStream( LPSTREAM* ppStream )
+{
+    OSL_ASSERT( ppStream );
+    *ppStream = m_lpStream;
+    if ( *ppStream )
+        static_cast< LPUNKNOWN >( *ppStream )->AddRef( );
+}
+
+// Init
+
+void CStgTransferHelper::init( SIZE_T newSize,
+                                        sal_uInt32 uiFlags,
+                                        bool bDelStgOnRelease )
+{
+    cleanup( );
+
+    m_bDelStgOnRelease      = bDelStgOnRelease;
+
+    HGLOBAL hGlob = GlobalAlloc( uiFlags, newSize );
+    if ( nullptr == hGlob )
+        throw CStgTransferException( STG_E_MEDIUMFULL );
+
+    HRESULT hr = CreateStreamOnHGlobal( hGlob, m_bDelStgOnRelease, &m_lpStream );
+    if ( FAILED( hr ) )
+    {
+        GlobalFree( hGlob );
+        m_lpStream = nullptr;
+        throw CStgTransferException( hr );
+    }
+
+#if OSL_DEBUG_LEVEL > 0
+    STATSTG statstg;
+    hr = m_lpStream->Stat( &statstg, STATFLAG_DEFAULT );
+    OSL_ASSERT( SUCCEEDED( hr ) );
+#endif
+}
+
+// Init
+
+void CStgTransferHelper::init( HGLOBAL hGlob,
+                                        bool bDelStgOnRelease )
+{
+    cleanup( );
+
+    m_bDelStgOnRelease      = bDelStgOnRelease;
+
+    HRESULT hr = CreateStreamOnHGlobal( hGlob, m_bDelStgOnRelease, &m_lpStream );
+    if ( FAILED( hr ) )
+        throw CStgTransferException( hr );
+}
+
+// free the global memory and invalidate the stream pointer
+
+void CStgTransferHelper::cleanup( )
+{
+    if ( m_lpStream && !m_bDelStgOnRelease )
+    {
+        HGLOBAL hGlob;
+        GetHGlobalFromStream( m_lpStream, &hGlob );
+        GlobalFree( hGlob );
+    }
+
+    if ( m_lpStream )
+    {
+        m_lpStream->Release( );
+        m_lpStream = nullptr;
+    }
+}
+
+// return the size of memory we point to
+
+sal_uInt32 CStgTransferHelper::memSize( CLIPFORMAT cf ) const
+{
+    DWORD dwSize = 0;
+
+    if ( nullptr != m_lpStream )
+    {
+        HGLOBAL hGlob;
+        GetHGlobalFromStream( m_lpStream, &hGlob );
+
+        if ( CF_TEXT == cf || RegisterClipboardFormatW( L"HTML Format" ) == cf )
+        {
+            char* pText = static_cast< char* >( GlobalLock( hGlob ) );
+            if ( pText )
+            {
+                dwSize = strlen(pText) + 1; // strlen + trailing '\0'
+                GlobalUnlock( hGlob );
+            }
+        }
+        else if ( CF_UNICODETEXT == cf )
+        {
+            sal_Unicode* pText = static_cast< sal_Unicode* >( GlobalLock( hGlob ) );
+            if ( pText )
+            {
+                dwSize = rtl_ustr_getLength( pText ) * sizeof( sal_Unicode );
+                GlobalUnlock( hGlob );
+            }
+        }
+        else
+            dwSize = GlobalSize( hGlob );
+    }
+
+    return dwSize;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/DTransHelper.hxx b/vcl/win/dtrans/DTransHelper.hxx
new file mode 100644
index 0000000000..d8ab3349cb
--- /dev/null
+++ b/vcl/win/dtrans/DTransHelper.hxx
@@ -0,0 +1,167 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <objidl.h>
+#include "WinClip.hxx"
+
+#define AUTO_INIT                 true
+
+// a helper class to manage a global memory area, the clients can write
+// into the global memory area and extract the handle to the global mem
+// note: not thread-safe
+
+class CStgTransferHelper
+{
+public:
+    // will be thrown in case of failures
+    class CStgTransferException
+    {
+    public:
+        HRESULT m_hr;
+        explicit CStgTransferException( HRESULT hr ) : m_hr( hr ) {};
+    };
+
+public:
+    CStgTransferHelper(
+        bool bAutoInit = false,
+        HGLOBAL  hGlob = nullptr,
+        bool bDelStgOnRelease = false );
+
+    ~CStgTransferHelper( );
+
+    void write( const void* lpData, ULONG cb, ULONG* cbWritten = nullptr );
+    void read( LPVOID pv, ULONG cb, ULONG* pcbRead = nullptr );
+
+    HGLOBAL getHGlobal( ) const;
+    void    getIStream( LPSTREAM* ppStream );
+
+    void init(
+        SIZE_T newSize,
+        sal_uInt32 uiFlags = GHND,
+        bool bDelStgOnRelease = false );
+
+    void init(
+        HGLOBAL hGlob,
+        bool bDelStgOnRelease = false );
+
+    // returns the size of the managed memory
+    sal_uInt32 memSize( CLIPFORMAT cf = CF_INVALID ) const;
+
+    // free the global memory and necessary
+    // release the internal stream pointer
+    void cleanup( );
+
+private:
+    LPSTREAM m_lpStream;
+    bool m_bDelStgOnRelease;
+
+private:
+    CStgTransferHelper( const CStgTransferHelper& );
+    CStgTransferHelper& operator=( const CStgTransferHelper& );
+};
+
+// something like an auto-pointer - allows access to the memory belonging
+// to a HGLOBAL and automatically unlocks a global memory at destruction
+// time
+
+class CRawHGlobalPtr
+{
+public:
+
+    // ctor
+
+    explicit CRawHGlobalPtr( HGLOBAL hGlob ) :
+        m_hGlob( hGlob ),
+        m_bIsLocked( false ),
+        m_pGlobMem( nullptr )
+    {
+    }
+
+    // ctor
+
+    explicit CRawHGlobalPtr( const CStgTransferHelper& theHGlobalHelper ) :
+        m_hGlob( theHGlobalHelper.getHGlobal( ) ),
+        m_bIsLocked( false ),
+        m_pGlobMem( nullptr )
+    {
+    }
+
+    // dtor
+
+    ~CRawHGlobalPtr( )
+    {
+        if ( m_bIsLocked )
+            GlobalUnlock( m_hGlob );
+    }
+
+    // lock the global memory (initializes a
+    // pointer to this memory)
+
+    BOOL Lock( )
+    {
+        if ( !m_bIsLocked && ( nullptr != m_hGlob ) )
+        {
+            m_pGlobMem = GlobalLock( m_hGlob );
+            m_bIsLocked = ( nullptr != m_pGlobMem );
+        }
+
+        return m_bIsLocked;
+    }
+
+    // unlock the global memory (invalidates the
+    // pointer to this memory)
+
+    BOOL Unlock( )
+    {
+        GlobalUnlock( m_hGlob );
+        m_bIsLocked = false;
+        m_pGlobMem = nullptr;
+
+        return ( NO_ERROR == GetLastError( ) );
+    }
+
+    // locks the global memory and returns a
+    // pointer to this memory
+
+    LPVOID GetMemPtr( )
+    {
+        Lock( );
+        return m_pGlobMem;
+    }
+
+    // size of mem we point to
+
+    int MemSize( ) const
+    {
+        return GlobalSize( m_hGlob );
+    }
+
+private:
+    HGLOBAL m_hGlob;
+    bool    m_bIsLocked;
+    LPVOID  m_pGlobMem;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/DataFmtTransl.cxx b/vcl/win/dtrans/DataFmtTransl.cxx
new file mode 100644
index 0000000000..5daf0b453f
--- /dev/null
+++ b/vcl/win/dtrans/DataFmtTransl.cxx
@@ -0,0 +1,252 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "DataFmtTransl.hxx"
+#include <rtl/string.hxx>
+#include <osl/diagnose.h>
+#include <rtl/tencinfo.h>
+#include "ImplHelper.hxx"
+#include "WinClip.hxx"
+#include "MimeAttrib.hxx"
+#include "DTransHelper.hxx"
+#include <rtl/string.h>
+#include <o3tl/char16_t2wchar_t.hxx>
+#include "Fetc.hxx"
+#include <com/sun/star/datatransfer/DataFormatTranslator.hpp>
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <shlobj.h>
+
+using namespace com::sun::star::uno;
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::lang;
+
+const Type       CPPUTYPE_SALINT32   = cppu::UnoType<sal_Int32>::get();
+const Type       CPPUTYPE_SALINT8    = cppu::UnoType<sal_Int8>::get();
+const Type       CPPUTYPE_OUSTRING   = cppu::UnoType<OUString>::get();
+const Type       CPPUTYPE_SEQSALINT8 = cppu::UnoType<Sequence< sal_Int8>>::get();
+const sal_Int32  MAX_CLIPFORMAT_NAME = 256;
+
+CDataFormatTranslator::CDataFormatTranslator( const Reference< XComponentContext >& rxContext )
+{
+    m_XDataFormatTranslator = DataFormatTranslator::create( rxContext );
+}
+
+CFormatEtc CDataFormatTranslator::getFormatEtcFromDataFlavor( const DataFlavor& aDataFlavor ) const
+{
+    sal_Int32 cf = CF_INVALID;
+
+    try
+    {
+        if( m_XDataFormatTranslator.is( ) )
+        {
+            Any aFormat = m_XDataFormatTranslator->getSystemDataTypeFromDataFlavor( aDataFlavor );
+
+            if ( aFormat.hasValue( ) )
+            {
+                if ( aFormat.getValueType( ) == CPPUTYPE_SALINT32 )
+                {
+                    aFormat >>= cf;
+                    OSL_ENSURE( CF_INVALID != cf, "Invalid Clipboard format delivered" );
+                }
+                else if ( aFormat.getValueType( ) == CPPUTYPE_OUSTRING )
+                {
+                    OUString aClipFmtName;
+                    aFormat >>= aClipFmtName;
+
+                    OSL_ASSERT( aClipFmtName.getLength( ) );
+                    cf = RegisterClipboardFormatW( o3tl::toW(aClipFmtName.getStr( )) );
+
+                    OSL_ENSURE( CF_INVALID != cf, "RegisterClipboardFormat failed" );
+                }
+                else
+                    OSL_FAIL( "Wrong Any-Type detected" );
+            }
+        }
+    }
+    catch( ... )
+    {
+        OSL_FAIL( "Unexpected error" );
+    }
+
+    return sal::static_int_cast<CFormatEtc>(getFormatEtcForClipformat( sal::static_int_cast<CLIPFORMAT>(cf) ));
+}
+
+DataFlavor CDataFormatTranslator::getDataFlavorFromFormatEtc(sal_uInt32 cfFormat, LCID lcid) const
+{
+    DataFlavor aFlavor;
+
+    try
+    {
+        CLIPFORMAT aClipformat = cfFormat;
+
+        Any aAny;
+        aAny <<= static_cast< sal_Int32 >( aClipformat );
+
+        if ( isOemOrAnsiTextFormat( aClipformat ) )
+        {
+            aFlavor.MimeType             = "text/plain;charset=";
+            aFlavor.MimeType            += getTextCharsetFromLCID( lcid, aClipformat );
+
+            aFlavor.HumanPresentableName = "OEM/ANSI Text";
+            aFlavor.DataType             = CPPUTYPE_SEQSALINT8;
+        }
+        else if ( CF_INVALID != aClipformat )
+        {
+            if ( m_XDataFormatTranslator.is( ) )
+            {
+                aFlavor = m_XDataFormatTranslator->getDataFlavorFromSystemDataType( aAny );
+
+                if ( !aFlavor.MimeType.getLength( ) )
+                {
+                    // lookup of DataFlavor from clipboard format id
+                    // failed, so we try to resolve via clipboard
+                    // format name
+                    OUString clipFormatName = getClipboardFormatName( aClipformat );
+
+                    // if we could not get a clipboard format name an
+                    // error must have occurred or it is a standard
+                    // clipboard format that we don't translate, e.g.
+                    // CF_BITMAP (the office only uses CF_DIB)
+                    if ( clipFormatName.getLength( ) )
+                    {
+                        aAny <<= clipFormatName;
+                        aFlavor = m_XDataFormatTranslator->getDataFlavorFromSystemDataType( aAny );
+                    }
+                }
+            }
+        }
+    }
+    catch( ... )
+    {
+        OSL_FAIL( "Unexpected error" );
+    }
+
+    return aFlavor;
+}
+
+CFormatEtc CDataFormatTranslator::getFormatEtcForClipformatName( const OUString& aClipFmtName )
+{
+    // check parameter
+    if ( !aClipFmtName.getLength( ) )
+        return CFormatEtc( CF_INVALID );
+
+    CLIPFORMAT cf = sal::static_int_cast<CLIPFORMAT>(RegisterClipboardFormatW( o3tl::toW(aClipFmtName.getStr( )) ));
+    return getFormatEtcForClipformat( cf );
+}
+
+OUString CDataFormatTranslator::getClipboardFormatName( CLIPFORMAT aClipformat )
+{
+    OSL_PRECOND( CF_INVALID != aClipformat, "Invalid clipboard format" );
+
+    sal_Unicode wBuff[ MAX_CLIPFORMAT_NAME + 1 ]; // Null terminator isn't counted, apparently.
+    sal_Int32   nLen = GetClipboardFormatNameW( aClipformat, o3tl::toW(wBuff), MAX_CLIPFORMAT_NAME );
+
+    return OUString( wBuff, nLen );
+}
+
+CFormatEtc CDataFormatTranslator::getFormatEtcForClipformat( CLIPFORMAT cf )
+{
+    CFormatEtc fetc( cf, TYMED_NULL, nullptr, DVASPECT_CONTENT );
+
+    switch( cf )
+    {
+    case CF_METAFILEPICT:
+        fetc.setTymed( TYMED_MFPICT );
+        break;
+
+    case CF_ENHMETAFILE:
+        fetc.setTymed( TYMED_ENHMF );
+        break;
+
+    default:
+        fetc.setTymed( TYMED_HGLOBAL /*| TYMED_ISTREAM*/ );
+    }
+
+    /*
+        hack: in order to paste urls copied by Internet Explorer
+        with "copy link" we set the lindex member to 0
+        but if we really want to support CFSTR_FILECONTENT and
+        the accompany format CFSTR_FILEDESCRIPTOR (FileGroupDescriptor)
+        the client of the clipboard service has to provide a id
+        of which FileContents it wants to paste
+        see MSDN: "Handling Shell Data Transfer Scenarios"
+    */
+    if ( cf == RegisterClipboardFormat( CFSTR_FILECONTENTS ) )
+         fetc.setLindex( 0 );
+
+    return fetc;
+}
+
+bool CDataFormatTranslator::isOemOrAnsiTextFormat( CLIPFORMAT cf )
+{
+    return ( (cf == CF_TEXT) || (cf == CF_OEMTEXT) );
+}
+
+bool CDataFormatTranslator::isUnicodeTextFormat( CLIPFORMAT cf )
+{
+    return ( cf == CF_UNICODETEXT );
+}
+
+bool CDataFormatTranslator::isTextFormat( CLIPFORMAT cf )
+{
+    return ( isOemOrAnsiTextFormat( cf ) || isUnicodeTextFormat( cf ) );
+}
+
+bool CDataFormatTranslator::isHTMLFormat( CLIPFORMAT cf )
+{
+    OUString clipFormatName = getClipboardFormatName( cf );
+    return ( clipFormatName == "HTML Format" );
+}
+
+bool CDataFormatTranslator::isTextHtmlFormat( CLIPFORMAT cf )
+{
+    OUString clipFormatName = getClipboardFormatName( cf );
+    return clipFormatName.equalsIgnoreAsciiCase( "HTML (HyperText Markup Language)" );
+}
+
+OUString CDataFormatTranslator::getTextCharsetFromLCID( LCID lcid, CLIPFORMAT aClipformat )
+{
+    OSL_ASSERT( isOemOrAnsiTextFormat( aClipformat ) );
+
+    OUString charset;
+    if ( CF_TEXT == aClipformat )
+    {
+        charset = getMimeCharsetFromLocaleId(
+                    lcid,
+                    LOCALE_IDEFAULTANSICODEPAGE,
+                    PRE_WINDOWS_CODEPAGE );
+    }
+    else if ( CF_OEMTEXT == aClipformat )
+    {
+        charset = getMimeCharsetFromLocaleId(
+                    lcid,
+                    LOCALE_IDEFAULTCODEPAGE,
+                    PRE_OEM_CODEPAGE );
+    }
+    else // CF_UNICODE
+        OSL_ASSERT( false );
+
+    return charset;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/DataFmtTransl.hxx b/vcl/win/dtrans/DataFmtTransl.hxx
new file mode 100644
index 0000000000..e003f2538b
--- /dev/null
+++ b/vcl/win/dtrans/DataFmtTransl.hxx
@@ -0,0 +1,64 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <com/sun/star/datatransfer/XDataFormatTranslator.hpp>
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <sal/types.h>
+#include <rtl/ustring.hxx>
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <objidl.h>
+
+// declaration
+
+class CFormatEtc;
+
+class CDataFormatTranslator
+{
+public:
+    explicit CDataFormatTranslator( const css::uno::Reference< css::uno::XComponentContext >& rxContext );
+
+    CFormatEtc getFormatEtcFromDataFlavor( const css::datatransfer::DataFlavor& aDataFlavor ) const;
+    css::datatransfer::DataFlavor getDataFlavorFromFormatEtc(
+        sal_uInt32 cfFormat, LCID lcid = GetThreadLocale()) const;
+
+    static CFormatEtc getFormatEtcForClipformat( CLIPFORMAT cf );
+    static CFormatEtc getFormatEtcForClipformatName( const OUString& aClipFmtName );
+    static OUString getClipboardFormatName( CLIPFORMAT aClipformat );
+
+    static bool isHTMLFormat( CLIPFORMAT cf );
+    static bool isTextHtmlFormat( CLIPFORMAT cf );
+    static bool isOemOrAnsiTextFormat( CLIPFORMAT cf );
+    static bool isUnicodeTextFormat( CLIPFORMAT cf );
+    static bool isTextFormat( CLIPFORMAT cf );
+
+private:
+    static OUString getTextCharsetFromLCID( LCID lcid, CLIPFORMAT aClipformat );
+
+private:
+    css::uno::Reference< css::datatransfer::XDataFormatTranslator >   m_XDataFormatTranslator;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/DtObjFactory.cxx b/vcl/win/dtrans/DtObjFactory.cxx
new file mode 100644
index 0000000000..8fe03789b1
--- /dev/null
+++ b/vcl/win/dtrans/DtObjFactory.cxx
@@ -0,0 +1,34 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "DtObjFactory.hxx"
+#include "XTDataObject.hxx"
+
+using namespace com::sun::star::uno;
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::lang;
+
+IDataObjectPtr
+CDTransObjFactory::createDataObjFromTransferable(const Reference<XComponentContext>& rxContext,
+                                                 const Reference<XTransferable>& refXTransferable)
+{
+    return (IDataObjectPtr(new CXTDataObject(rxContext, refXTransferable)));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/DtObjFactory.hxx b/vcl/win/dtrans/DtObjFactory.hxx
new file mode 100644
index 0000000000..b5d5f50075
--- /dev/null
+++ b/vcl/win/dtrans/DtObjFactory.hxx
@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+
+#include <systools/win32/comtools.hxx>
+
+namespace CDTransObjFactory
+{
+    IDataObjectPtr createDataObjFromTransferable( const css::uno::Reference< css::uno::XComponentContext >& rxContext,
+                                                                   const css::uno::Reference< css::datatransfer::XTransferable >& refXTransferable );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/Fetc.cxx b/vcl/win/dtrans/Fetc.cxx
new file mode 100644
index 0000000000..9bcb2f609f
--- /dev/null
+++ b/vcl/win/dtrans/Fetc.cxx
@@ -0,0 +1,166 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <osl/diagnose.h>
+#include "Fetc.hxx"
+#include "ImplHelper.hxx"
+
+CFormatEtc::CFormatEtc(  )
+{
+    m_FormatEtc.cfFormat = 0;
+    m_FormatEtc.ptd      = nullptr;
+    m_FormatEtc.dwAspect = 0;
+    m_FormatEtc.lindex   = -1;
+    m_FormatEtc.tymed    = TYMED_NULL;
+}
+
+// transfer of ownership
+
+CFormatEtc::CFormatEtc( const FORMATETC& aFormatEtc )
+{
+    CopyFormatEtc( &m_FormatEtc, &const_cast< FORMATETC& >( aFormatEtc ) );
+}
+
+CFormatEtc::~CFormatEtc( )
+{
+    DeleteTargetDevice( m_FormatEtc.ptd );
+}
+
+CFormatEtc::CFormatEtc( CLIPFORMAT cf, DWORD tymed, DVTARGETDEVICE* ptd, DWORD dwAspect, LONG lindex )
+{
+    m_FormatEtc.cfFormat = cf;
+    m_FormatEtc.ptd      = CopyTargetDevice( ptd );
+    m_FormatEtc.dwAspect = dwAspect;
+    m_FormatEtc.lindex   = lindex;
+    m_FormatEtc.tymed    = tymed;
+}
+
+CFormatEtc::CFormatEtc( const CFormatEtc& theOther )
+{
+    m_FormatEtc.cfFormat = theOther.m_FormatEtc.cfFormat;
+    m_FormatEtc.ptd      = CopyTargetDevice( theOther.m_FormatEtc.ptd );
+    m_FormatEtc.dwAspect = theOther.m_FormatEtc.dwAspect;
+    m_FormatEtc.lindex   = theOther.m_FormatEtc.lindex;
+    m_FormatEtc.tymed    = theOther.m_FormatEtc.tymed;
+}
+
+CFormatEtc& CFormatEtc::operator=( const CFormatEtc& theOther )
+{
+    if ( this != &theOther )
+    {
+        DeleteTargetDevice( m_FormatEtc.ptd );
+
+        m_FormatEtc.cfFormat = theOther.m_FormatEtc.cfFormat;
+        m_FormatEtc.ptd      = CopyTargetDevice( theOther.m_FormatEtc.ptd );
+        m_FormatEtc.dwAspect = theOther.m_FormatEtc.dwAspect;
+        m_FormatEtc.lindex   = theOther.m_FormatEtc.lindex;
+        m_FormatEtc.tymed    = theOther.m_FormatEtc.tymed;
+    }
+
+    return *this;
+}
+
+CFormatEtc::operator FORMATETC*( )
+{
+    return &m_FormatEtc;
+}
+
+CFormatEtc::operator FORMATETC( )
+{
+    return m_FormatEtc;
+}
+
+void CFormatEtc::getFORMATETC( LPFORMATETC lpFormatEtc )
+{
+    OSL_ASSERT( lpFormatEtc );
+    OSL_ASSERT( !IsBadWritePtr( lpFormatEtc, sizeof( FORMATETC ) ) );
+
+    CopyFormatEtc( lpFormatEtc, &m_FormatEtc );
+}
+
+CLIPFORMAT CFormatEtc::getClipformat( ) const
+{
+    return m_FormatEtc.cfFormat;
+}
+
+DWORD CFormatEtc::getTymed( ) const
+{
+    return m_FormatEtc.tymed;
+}
+
+void CFormatEtc::getTargetDevice( DVTARGETDEVICE** lpDvTargetDevice ) const
+{
+    OSL_ASSERT( lpDvTargetDevice );
+    OSL_ASSERT( !IsBadWritePtr( lpDvTargetDevice, sizeof( DVTARGETDEVICE ) ) );
+
+    *lpDvTargetDevice = nullptr;
+
+    if ( m_FormatEtc.ptd )
+        *lpDvTargetDevice = CopyTargetDevice( m_FormatEtc.ptd );
+}
+
+DWORD CFormatEtc::getDvAspect( ) const
+{
+    return m_FormatEtc.dwAspect;
+}
+
+LONG CFormatEtc::getLindex( ) const
+{
+    return m_FormatEtc.lindex;
+}
+
+void CFormatEtc::setClipformat( CLIPFORMAT cf )
+{
+    m_FormatEtc.cfFormat = cf;
+}
+
+void CFormatEtc::setTymed( DWORD tymed )
+{
+    m_FormatEtc.tymed = tymed;
+}
+
+// transfer of ownership!
+
+void CFormatEtc::setTargetDevice( DVTARGETDEVICE* ptd )
+{
+    DeleteTargetDevice( m_FormatEtc.ptd );
+    m_FormatEtc.ptd = ptd;
+}
+
+void CFormatEtc::setDvAspect( DWORD dwAspect )
+{
+    m_FormatEtc.dwAspect = dwAspect;
+}
+
+void CFormatEtc::setLindex( LONG lindex )
+{
+    m_FormatEtc.lindex = lindex;
+}
+
+bool operator==( const CFormatEtc& lhs, const CFormatEtc& rhs )
+{
+    return CompareFormatEtc( &lhs.m_FormatEtc, &rhs.m_FormatEtc );
+}
+
+bool operator!=( const CFormatEtc& lhs, const CFormatEtc& rhs )
+{
+    return !( lhs == rhs );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/Fetc.hxx b/vcl/win/dtrans/Fetc.hxx
new file mode 100644
index 0000000000..e0880acd64
--- /dev/null
+++ b/vcl/win/dtrans/Fetc.hxx
@@ -0,0 +1,76 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <objidl.h>
+
+/**********************************************************************
+ stl container elements must fulfill the following requirements:
+ 1. they need a copy ctor and assignment operator(?)
+ 2. they must be comparable
+ because the FORMATETC structure has a pointer to a TARGETDEVICE
+ structure we need a simple wrapper class to fulfill these needs
+***********************************************************************/
+
+class CFormatEtc
+{
+public:
+    CFormatEtc( );
+    explicit CFormatEtc( const FORMATETC& aFormatEtc );
+    CFormatEtc( CLIPFORMAT cf, DWORD tymed = TYMED_HGLOBAL, DVTARGETDEVICE* ptd = nullptr, DWORD dwAspect = DVASPECT_CONTENT, LONG lindex = -1 );
+    CFormatEtc( const CFormatEtc& theOther );
+
+    ~CFormatEtc( );
+
+    CFormatEtc& operator=( const CFormatEtc& theOther );
+    operator FORMATETC*( );
+    operator FORMATETC( );
+
+    void getFORMATETC( LPFORMATETC lpFormatEtc );
+
+    CLIPFORMAT getClipformat( ) const;
+    DWORD      getTymed( ) const;
+    void       getTargetDevice( DVTARGETDEVICE** ptd ) const;
+    DWORD      getDvAspect( ) const;
+    LONG       getLindex( ) const;
+
+    void setClipformat( CLIPFORMAT cf );
+    void setTymed( DWORD tymed );
+    void setTargetDevice( DVTARGETDEVICE* ptd );
+    void setDvAspect( DWORD dwAspect );
+    void setLindex( LONG lindex );
+
+private:
+    FORMATETC m_FormatEtc;
+
+    friend bool operator==( const CFormatEtc& lhs, const CFormatEtc& rhs );
+    friend bool operator!=( const CFormatEtc& lhs, const CFormatEtc& rhs );
+};
+
+bool operator==( const CFormatEtc& lhs, const CFormatEtc& rhs );
+bool operator!=( const CFormatEtc& lhs, const CFormatEtc& rhs );
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/FetcList.cxx b/vcl/win/dtrans/FetcList.cxx
new file mode 100644
index 0000000000..5ace3cdca6
--- /dev/null
+++ b/vcl/win/dtrans/FetcList.cxx
@@ -0,0 +1,340 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <osl/diagnose.h>
+#include "FetcList.hxx"
+#include "Fetc.hxx"
+#include <com/sun/star/container/NoSuchElementException.hpp>
+#include <com/sun/star/datatransfer/MimeContentTypeFactory.hpp>
+#include <com/sun/star/datatransfer/XMimeContentType.hpp>
+
+#include "DataFmtTransl.hxx"
+#include "ImplHelper.hxx"
+#include "WinClip.hxx"
+
+#include <algorithm>
+
+#include "MimeAttrib.hxx"
+
+using namespace com::sun::star::uno;
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::container;
+
+LCID       CFormatRegistrar::m_TxtLocale   = 0;
+sal_uInt32 CFormatRegistrar::m_TxtCodePage = GetACP( );
+
+CFormatEtcContainer::CFormatEtcContainer( )
+{
+    m_EnumIterator = m_FormatMap.begin( );
+}
+
+void CFormatEtcContainer::addFormatEtc( const CFormatEtc& fetc )
+{
+    m_FormatMap.push_back( fetc );
+}
+
+void CFormatEtcContainer::removeFormatEtc( const CFormatEtc& fetc )
+{
+    FormatEtcMap_t::iterator iter =
+        find( m_FormatMap.begin(), m_FormatMap.end(), fetc );
+
+    if ( iter != m_FormatMap.end( ) )
+        m_FormatMap.erase( iter );
+}
+
+void CFormatEtcContainer::removeAllFormatEtc( )
+{
+    m_FormatMap.clear( );
+}
+
+bool CFormatEtcContainer::hasFormatEtc( const CFormatEtc& fetc ) const
+{
+    FormatEtcMap_t::const_iterator iter =
+        find( m_FormatMap.begin(), m_FormatMap.end(), fetc );
+
+    return ( iter != m_FormatMap.end( ) );
+}
+
+bool CFormatEtcContainer::hasElements( ) const
+{
+    return !m_FormatMap.empty();
+}
+
+void CFormatEtcContainer::beginEnumFormatEtc( )
+{
+    m_EnumIterator = m_FormatMap.begin( );
+}
+
+sal_uInt32 CFormatEtcContainer::nextFormatEtc( LPFORMATETC lpFetc,
+                                                        sal_uInt32 aNum )
+{
+    OSL_ASSERT( lpFetc );
+    OSL_ASSERT( !IsBadWritePtr( lpFetc, sizeof( FORMATETC ) * aNum ) );
+
+    sal_uInt32 nFetched = 0;
+
+    for ( sal_uInt32 i = 0; i < aNum; i++, nFetched++, lpFetc++, ++m_EnumIterator )
+    {
+        if ( m_EnumIterator == m_FormatMap.end() )
+            break;
+        CopyFormatEtc( lpFetc, *m_EnumIterator );
+    }
+
+    return nFetched;
+}
+
+bool CFormatEtcContainer::skipFormatEtc( sal_uInt32 aNum )
+{
+    FormatEtcMap_t::const_iterator iter_end = m_FormatMap.end( );
+    for ( sal_uInt32 i = 0;
+          (i < aNum) && (m_EnumIterator != iter_end);
+          i++, ++m_EnumIterator )
+        ;/* intentionally left empty */
+
+    return ( m_EnumIterator != m_FormatMap.end( ) );
+}
+
+CFormatRegistrar::CFormatRegistrar( const Reference< XComponentContext >& rxContext,
+                                    const CDataFormatTranslator& aDataFormatTranslator ) :
+    m_DataFormatTranslator( aDataFormatTranslator ),
+    m_bHasSynthesizedLocale( false ),
+    m_xContext( rxContext )
+{
+}
+
+// this function converts all DataFlavors of the given FlavorList into
+// an appropriate FORMATETC structure, for some formats like unicodetext,
+// text and text/html we will offer an accompany format e.g.:
+//
+// DataFlavor               | Registered Clipformat     |   Registered accompany clipformat
+// -------------------------|---------------------------|-----------------------------------
+// text/plain;charset=ansi  | CF_TEXT                   |   CF_UNICODETEXT
+//                          |                           |   CF_LOCALE (if charset != GetACP()
+//                          |                           |
+// text/plain;charset=oem   | CF_OEMTEXT                |   CF_UNICODETEXT
+//                          |                           |   CF_LOCALE (if charset != GetOEMCP()
+//                          |                           |
+// text/plain;charset=utf-16| CF_UNICODETEXT            |   CF_TEXT
+//                          |                           |
+// text/html                | HTML (Hypertext ...)      |   HTML Format
+//                          |                           |
+//
+// if some tries to register different text formats with different charsets the last
+// registered wins and the others are ignored
+
+void CFormatRegistrar::RegisterFormats(
+    const Reference< XTransferable >& aXTransferable, CFormatEtcContainer& aFormatEtcContainer )
+{
+    Sequence< DataFlavor > aFlavorList = aXTransferable->getTransferDataFlavors( );
+    sal_Int32  nFlavors                = aFlavorList.getLength( );
+    bool   bUnicodeRegistered      = false;
+    DataFlavor aFlavor;
+
+    for( sal_Int32 i = 0; i < nFlavors; i++ )
+    {
+        aFlavor = aFlavorList[i];
+        CFormatEtc fetc = m_DataFormatTranslator.getFormatEtcFromDataFlavor( aFlavor );
+
+        // maybe an internal format so we ignore it
+        if ( CF_INVALID == fetc.getClipformat( ) )
+            continue;
+
+        if ( !needsToSynthesizeAccompanyFormats( fetc ) )
+            aFormatEtcContainer.addFormatEtc( fetc );
+        else
+        {
+            // if we haven't registered any text format up to now
+            if ( CDataFormatTranslator::isTextFormat( fetc.getClipformat() ) && !bUnicodeRegistered )
+            {
+                // if the transferable supports unicode text we ignore
+                // any further text format the transferable offers
+                // because we can create it from Unicode text in addition
+                // we register CF_TEXT for non unicode clients
+                if ( CDataFormatTranslator::isUnicodeTextFormat( fetc.getClipformat() ) )
+                {
+                    aFormatEtcContainer.addFormatEtc( fetc ); // add CF_UNICODE
+                    aFormatEtcContainer.addFormatEtc(
+                        CDataFormatTranslator::getFormatEtcForClipformat( CF_TEXT ) ); // add CF_TEXT
+                    bUnicodeRegistered = true;
+                }
+                else if ( !hasUnicodeFlavor( aXTransferable ) )
+                {
+                    // we try to investigate the charset and make a valid
+                    // windows codepage from this charset the default
+                    // return value is the result of GetACP( )
+                    OUString charset = getCharsetFromDataFlavor( aFlavor );
+                    sal_uInt32 txtCP = getWinCPFromMimeCharset( charset );
+
+                    // we try to get a Locale appropriate for this codepage
+                    if ( findLocaleForTextCodePage( ) )
+                    {
+                        m_TxtCodePage = txtCP;
+
+                        aFormatEtcContainer.addFormatEtc(
+                            CDataFormatTranslator::getFormatEtcForClipformat( CF_UNICODETEXT ) );
+
+                        if ( !IsOEMCP( m_TxtCodePage ) )
+                            aFormatEtcContainer.addFormatEtc(
+                                CDataFormatTranslator::getFormatEtcForClipformat( CF_TEXT ) );
+                        else
+                            aFormatEtcContainer.addFormatEtc(
+                                CDataFormatTranslator::getFormatEtcForClipformat( CF_OEMTEXT ) );
+
+                        aFormatEtcContainer.addFormatEtc(
+                            CDataFormatTranslator::getFormatEtcForClipformat( CF_LOCALE ) );
+
+                        // we save the flavor so it's easier when
+                        // queried for it in XTDataObject::GetData(...)
+                        m_RegisteredTextFlavor  = aFlavor;
+                        m_bHasSynthesizedLocale = true;
+                    }
+                }
+            }
+            else if ( CDataFormatTranslator::isTextHtmlFormat( fetc.getClipformat( ) ) ) // Html (Hyper Text...)
+            {
+                // we add text/html ( HTML (HyperText Markup Language) )
+                aFormatEtcContainer.addFormatEtc( fetc );
+
+                // and HTML Format
+                aFormatEtcContainer.addFormatEtc(
+                    CDataFormatTranslator::getFormatEtcForClipformatName( "HTML Format" ) );
+            }
+        }
+    }
+}
+
+bool CFormatRegistrar::hasSynthesizedLocale( ) const
+{
+    return m_bHasSynthesizedLocale;
+}
+
+LCID CFormatRegistrar::getSynthesizedLocale( )
+{
+    return m_TxtLocale;
+}
+
+sal_uInt32 CFormatRegistrar::getRegisteredTextCodePage( )
+{
+    return m_TxtCodePage;
+}
+
+DataFlavor CFormatRegistrar::getRegisteredTextFlavor( ) const
+{
+    return m_RegisteredTextFlavor;
+}
+
+bool CFormatRegistrar::isSynthesizeableFormat( const CFormatEtc& aFormatEtc )
+{
+    return ( CDataFormatTranslator::isOemOrAnsiTextFormat( aFormatEtc.getClipformat() ) ||
+             CDataFormatTranslator::isUnicodeTextFormat( aFormatEtc.getClipformat() ) ||
+             CDataFormatTranslator::isHTMLFormat( aFormatEtc.getClipformat() ) );
+}
+
+inline
+bool CFormatRegistrar::needsToSynthesizeAccompanyFormats( const CFormatEtc& aFormatEtc )
+{
+    return ( CDataFormatTranslator::isOemOrAnsiTextFormat( aFormatEtc.getClipformat() ) ||
+             CDataFormatTranslator::isUnicodeTextFormat( aFormatEtc.getClipformat() ) ||
+             CDataFormatTranslator::isTextHtmlFormat( aFormatEtc.getClipformat( ) ) );
+}
+
+OUString CFormatRegistrar::getCharsetFromDataFlavor( const DataFlavor& aFlavor )
+{
+    OUString charset;
+
+    try
+    {
+        Reference< XMimeContentTypeFactory > xMimeFac =
+            MimeContentTypeFactory::create(m_xContext);
+
+        Reference< XMimeContentType > xMimeType( xMimeFac->createMimeContentType( aFlavor.MimeType ) );
+        if ( xMimeType->hasParameter( TEXTPLAIN_PARAM_CHARSET ) )
+            charset = xMimeType->getParameterValue( TEXTPLAIN_PARAM_CHARSET );
+        else
+            charset = getMimeCharsetFromWinCP( GetACP( ), PRE_WINDOWS_CODEPAGE );
+    }
+    catch(NoSuchElementException&)
+    {
+        OSL_FAIL( "Unexpected" );
+    }
+    catch(...)
+    {
+        OSL_FAIL( "Invalid data flavor" );
+    }
+
+    return charset;
+}
+
+bool CFormatRegistrar::hasUnicodeFlavor( const Reference< XTransferable >& aXTransferable ) const
+{
+    DataFlavor aFlavor = m_DataFormatTranslator.getDataFlavorFromFormatEtc(CF_UNICODETEXT);
+
+    return aXTransferable->isDataFlavorSupported( aFlavor );
+}
+
+bool CFormatRegistrar::findLocaleForTextCodePage( )
+{
+    m_TxtLocale = 0;
+    EnumSystemLocalesA( CFormatRegistrar::EnumLocalesProc, LCID_INSTALLED );
+    return IsValidLocale( m_TxtLocale, LCID_INSTALLED );
+}
+
+bool CFormatRegistrar::isLocaleCodePage( LCID lcid, LCTYPE lctype, sal_uInt32 codepage )
+{
+    char  buff[6];
+    sal_uInt32 localeCodePage;
+
+    OSL_ASSERT( IsValidLocale( lcid, LCID_INSTALLED ) );
+
+    // get the ansi codepage of the current locale
+    GetLocaleInfoA( lcid, lctype, buff, sizeof( buff ) );
+    localeCodePage = atol( buff );
+
+    return ( localeCodePage == codepage );
+}
+
+inline
+bool CFormatRegistrar::isLocaleOemCodePage( LCID lcid, sal_uInt32 codepage )
+{
+    return isLocaleCodePage( lcid, LOCALE_IDEFAULTCODEPAGE, codepage );
+}
+
+inline
+bool CFormatRegistrar::isLocaleAnsiCodePage( LCID lcid, sal_uInt32 codepage )
+{
+    return isLocaleCodePage( lcid, LOCALE_IDEFAULTANSICODEPAGE, codepage );
+}
+
+BOOL CALLBACK CFormatRegistrar::EnumLocalesProc( LPSTR lpLocaleStr )
+{
+    // the lpLocaleStr parameter is hexadecimal
+    LCID lcid = strtol( lpLocaleStr, nullptr, 16 );
+
+    if ( isLocaleAnsiCodePage( lcid, CFormatRegistrar::m_TxtCodePage ) ||
+         isLocaleOemCodePage( lcid, CFormatRegistrar::m_TxtCodePage ) )
+    {
+        CFormatRegistrar::m_TxtLocale = lcid;
+        return false; // stop enumerating
+    }
+
+    return true;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/FetcList.hxx b/vcl/win/dtrans/FetcList.hxx
new file mode 100644
index 0000000000..2df28ff575
--- /dev/null
+++ b/vcl/win/dtrans/FetcList.hxx
@@ -0,0 +1,139 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include "Fetc.hxx"
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+
+#include <vector>
+
+/*****************************************************************
+    a simple container for FORMATECT structures
+    instances of this class are not thread-safe
+*****************************************************************/
+
+class CFormatEtcContainer
+{
+public:
+    CFormatEtcContainer( );
+
+    // duplicates not allowed
+    void addFormatEtc( const CFormatEtc& fetc );
+
+    // removes the specified formatetc
+    void removeFormatEtc( const CFormatEtc& fetc );
+
+    // removes the formatetc at pos
+    void removeAllFormatEtc( );
+
+    bool hasFormatEtc( const CFormatEtc& fetc ) const;
+
+    bool hasElements( ) const;
+
+    // begin enumeration
+    void beginEnumFormatEtc( );
+
+    // copies the specified number of formatetc structures starting
+    // at the current enum position
+    // the return value is the number of copied elements; if the
+    // current enum position is at the end the return value is 0
+    sal_uInt32 nextFormatEtc( LPFORMATETC lpFetc, sal_uInt32 aNum = 1 );
+
+    // skips the specified number of elements in the container
+    bool skipFormatEtc( sal_uInt32 aNum );
+
+protected:
+    typedef std::vector< CFormatEtc > FormatEtcMap_t;
+
+private:
+    FormatEtcMap_t           m_FormatMap;
+    FormatEtcMap_t::iterator m_EnumIterator;
+};
+
+/*****************************************************************
+    a helper class which converts data flavors to clipformats,
+    creates an appropriate formatetc structures and if possible
+    synthesizes clipboard formats if necessary, e.g. if text
+    is provided a locale will also be provided;
+    the class registers the formatetc within a CFormatEtcContainer
+
+    instances of this class are not thread-safe and multiple
+    instances of this class would use the same static variables
+    that's why this class should not be used by multiple threads,
+    only one thread of a process should use it
+*****************************************************************/
+
+// forward
+class CDataFormatTranslator;
+
+class CFormatRegistrar
+{
+public:
+    CFormatRegistrar( const css::uno::Reference< css::uno::XComponentContext >& rxContext,
+                      const CDataFormatTranslator& aDataFormatTranslator );
+
+    void RegisterFormats( const css::uno::Reference< css::datatransfer::XTransferable >& aXTransferable,
+                                   CFormatEtcContainer& aFormatEtcContainer );
+
+    bool hasSynthesizedLocale( ) const;
+    static LCID getSynthesizedLocale( );
+    static sal_uInt32 getRegisteredTextCodePage( );
+    css::datatransfer::DataFlavor getRegisteredTextFlavor( ) const;
+
+    static bool isSynthesizeableFormat( const CFormatEtc& aFormatEtc );
+    static bool needsToSynthesizeAccompanyFormats( const CFormatEtc& aFormatEtc );
+
+private:
+    OUString getCharsetFromDataFlavor( const css::datatransfer::DataFlavor& aFlavor );
+
+    bool hasUnicodeFlavor(
+        const css::uno::Reference< css::datatransfer::XTransferable >& aXTransferable ) const;
+
+    static bool findLocaleForTextCodePage( );
+
+    static bool isLocaleOemCodePage( LCID lcid, sal_uInt32 codepage );
+    static bool isLocaleAnsiCodePage( LCID lcid, sal_uInt32 codepage );
+    static bool isLocaleCodePage( LCID lcid, LCTYPE lctype, sal_uInt32 codepage );
+
+    static BOOL CALLBACK EnumLocalesProc( LPSTR lpLocaleStr );
+
+private:
+    const CDataFormatTranslator&             m_DataFormatTranslator;
+    bool                                     m_bHasSynthesizedLocale;
+    css::datatransfer::DataFlavor            m_RegisteredTextFlavor;
+
+    const css::uno::Reference< css::uno::XComponentContext >  m_xContext;
+
+    static LCID       m_TxtLocale;
+    static sal_uInt32 m_TxtCodePage;
+
+private:
+    CFormatRegistrar( const CFormatRegistrar& );
+    CFormatRegistrar& operator=( const CFormatRegistrar& );
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/FmtFilter.cxx b/vcl/win/dtrans/FmtFilter.cxx
new file mode 100644
index 0000000000..27d051f7e8
--- /dev/null
+++ b/vcl/win/dtrans/FmtFilter.cxx
@@ -0,0 +1,435 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <string.h>
+
+#include "FmtFilter.hxx"
+
+#include <o3tl/safeint.hxx>
+#include <o3tl/unit_conversion.hxx>
+#include <osl/diagnose.h>
+
+#include <shobjidl.h>
+#include <shlguid.h>
+#include <objidl.h>
+#include <shellapi.h>
+
+#include <string>
+#include <sstream>
+#include <vector>
+#include <iomanip>
+
+#include <systools/win32/comtools.hxx>
+
+using namespace com::sun::star::uno;
+
+namespace {
+
+#pragma pack(2)
+struct METAFILEHEADER
+{
+    DWORD       key;
+    short       hmf;
+    SMALL_RECT  bbox;
+    WORD        inch;
+    DWORD       reserved;
+    WORD        checksum;
+};
+#pragma pack()
+
+}
+
+// convert a windows metafile picture to a LibreOffice metafile picture
+
+Sequence< sal_Int8 > WinMFPictToOOMFPict( Sequence< sal_Int8 >& aMetaFilePict )
+{
+    OSL_ASSERT( aMetaFilePict.getLength( ) == sizeof( METAFILEPICT ) );
+
+    Sequence< sal_Int8 > mfpictStream;
+    METAFILEPICT* pMFPict = reinterpret_cast< METAFILEPICT* >( aMetaFilePict.getArray( ) );
+    HMETAFILE hMf = pMFPict->hMF;
+    sal_uInt32 nCount = GetMetaFileBitsEx( hMf, 0, nullptr );
+
+    if ( nCount > 0 )
+    {
+        mfpictStream.realloc( nCount + sizeof( METAFILEHEADER ) );
+
+        METAFILEHEADER* pMFHeader = reinterpret_cast< METAFILEHEADER* >( mfpictStream.getArray( ) );
+        SMALL_RECT aRect = { 0,
+                             0,
+                             static_cast< short >( pMFPict->xExt ),
+                             static_cast< short >( pMFPict->yExt ) };
+        USHORT nInch;
+
+        switch( pMFPict->mm )
+        {
+        case MM_TEXT:
+            nInch = o3tl::convert(1, o3tl::Length::in, o3tl::Length::pt);
+            break;
+
+        case MM_LOMETRIC:
+            nInch = o3tl::convert(1, o3tl::Length::in, o3tl::Length::mm10);
+            break;
+
+        case MM_HIMETRIC:
+            nInch = o3tl::convert(1, o3tl::Length::in, o3tl::Length::mm100);
+            break;
+
+        case MM_LOENGLISH:
+            nInch = o3tl::convert(1, o3tl::Length::in, o3tl::Length::in100);
+            break;
+
+        case MM_HIENGLISH:
+        case MM_ISOTROPIC:
+        case MM_ANISOTROPIC:
+            nInch = o3tl::convert(1, o3tl::Length::in, o3tl::Length::in1000);
+            break;
+
+        case MM_TWIPS:
+            nInch = o3tl::convert(1, o3tl::Length::in, o3tl::Length::twip);
+            break;
+
+        default:
+            nInch = o3tl::convert(1, o3tl::Length::in, o3tl::Length::master);
+        }
+
+        pMFHeader->key      = 0x9AC6CDD7L;
+        pMFHeader->hmf      = 0;
+        pMFHeader->bbox     = aRect;
+        pMFHeader->inch     = nInch;
+        pMFHeader->reserved = 0;
+        pMFHeader->checksum = 0;
+
+        char* pMFBuff = reinterpret_cast< char* >( mfpictStream.getArray( ) );
+
+        nCount = GetMetaFileBitsEx( pMFPict->hMF, nCount, pMFBuff + sizeof( METAFILEHEADER ) );
+        OSL_ASSERT( nCount > 0 );
+    }
+
+    return mfpictStream;
+}
+
+// convert a windows enhanced metafile to a LibreOffice metafile
+
+Sequence< sal_Int8 > WinENHMFPictToOOMFPict( HENHMETAFILE hEnhMetaFile )
+{
+    Sequence< sal_Int8 >    aRet;
+    UINT                    nSize = 0;
+
+    if( hEnhMetaFile &&
+        ( ( nSize = GetEnhMetaFileBits( hEnhMetaFile, 0, nullptr ) ) != 0 ) )
+    {
+        aRet.realloc( nSize );
+
+        if( GetEnhMetaFileBits( hEnhMetaFile, nSize, reinterpret_cast<unsigned char*>(aRet.getArray()) ) != nSize )
+            aRet.realloc( 0 );
+    }
+
+    return aRet;
+}
+
+// convert a LibreOffice metafile picture to a windows metafile picture
+
+HMETAFILEPICT OOMFPictToWinMFPict( Sequence< sal_Int8 > const & aOOMetaFilePict )
+{
+    HMETAFILEPICT   hPict = nullptr;
+    HMETAFILE       hMtf = SetMetaFileBitsEx( aOOMetaFilePict.getLength(), reinterpret_cast<unsigned char const *>(aOOMetaFilePict.getConstArray()) );
+
+    if( hMtf )
+    {
+        METAFILEPICT* pPict = static_cast<METAFILEPICT*>(GlobalLock( hPict = GlobalAlloc( GHND, sizeof( METAFILEPICT ) ) ));
+
+        pPict->mm = 8;
+        pPict->xExt = 0;
+        pPict->yExt = 0;
+        pPict->hMF = hMtf;
+
+        GlobalUnlock( hPict );
+    }
+
+    return hPict;
+}
+
+// convert a LibreOffice metafile picture to a windows enhanced metafile picture
+
+HENHMETAFILE OOMFPictToWinENHMFPict( Sequence< sal_Int8 > const & aOOMetaFilePict )
+{
+    HENHMETAFILE hEnhMtf = SetEnhMetaFileBits( aOOMetaFilePict.getLength(), reinterpret_cast<unsigned char const *>(aOOMetaFilePict.getConstArray()) );
+
+    return hEnhMtf;
+}
+
+// convert a windows device independent bitmap into a LibreOffice bitmap
+
+Sequence< sal_Int8 > WinDIBToOOBMP( const Sequence< sal_Int8 >& aWinDIB )
+{
+    OSL_ENSURE(o3tl::make_unsigned(aWinDIB.getLength()) > sizeof(BITMAPINFOHEADER), "CF_DIBV5/CF_DIB too small (!)");
+    Sequence< sal_Int8 > ooBmpStream;
+
+    ooBmpStream.realloc(aWinDIB.getLength( ) + sizeof(BITMAPFILEHEADER));
+    const BITMAPINFOHEADER* pBmpInfoHdr = reinterpret_cast< const BITMAPINFOHEADER* >(aWinDIB.getConstArray());
+    BITMAPFILEHEADER* pBmpFileHdr = reinterpret_cast< BITMAPFILEHEADER* >(ooBmpStream.getArray());
+    const DWORD nSizeInfoOrV5(pBmpInfoHdr->biSize > sizeof(BITMAPINFOHEADER) ? sizeof(BITMAPV5HEADER) : sizeof(BITMAPINFOHEADER));
+    DWORD nOffset(sizeof(BITMAPFILEHEADER) + nSizeInfoOrV5);
+
+    memcpy(pBmpFileHdr + 1, pBmpInfoHdr, aWinDIB.getLength());
+
+    if(pBmpInfoHdr->biBitCount <= 8)
+    {
+        nOffset += (pBmpInfoHdr->biClrUsed ? pBmpInfoHdr->biClrUsed : (1 << pBmpInfoHdr->biBitCount)) << 2;
+    }
+    else if((BI_BITFIELDS == pBmpInfoHdr->biCompression ) && ((16 == pBmpInfoHdr->biBitCount ) || (32 == pBmpInfoHdr->biBitCount )))
+    {
+        nOffset += 12;
+    }
+
+    pBmpFileHdr->bfType = ('M' << 8) | 'B';
+    pBmpFileHdr->bfSize = 0; // maybe: nMemSize + sizeof(BITMAPFILEHEADER)
+    pBmpFileHdr->bfReserved1 = 0;
+    pBmpFileHdr->bfReserved2 = 0;
+    pBmpFileHdr->bfOffBits = nOffset;
+
+    return ooBmpStream;
+}
+
+// convert a LibreOffice bitmap into a windows device independent bitmap
+
+Sequence< sal_Int8 > OOBmpToWinDIB( Sequence< sal_Int8 >& aOOBmp )
+{
+    Sequence< sal_Int8 > winDIBStream( aOOBmp.getLength( ) - sizeof( BITMAPFILEHEADER ) );
+
+    memcpy( winDIBStream.getArray( ),
+                    aOOBmp.getArray( )  + sizeof( BITMAPFILEHEADER ),
+                    aOOBmp.getLength( ) - sizeof( BITMAPFILEHEADER ) );
+
+    return winDIBStream;
+}
+
+static std::string GetHtmlFormatHeader(size_t startHtml, size_t endHtml, size_t startFragment, size_t endFragment)
+{
+    std::ostringstream htmlHeader;
+    htmlHeader << "Version:1.0" << '\r' << '\n';
+    htmlHeader << "StartHTML:" << std::setw(10) << std::setfill('0') << std::dec << startHtml << '\r' << '\n';
+    htmlHeader << "EndHTML:" << std::setw(10) << std::setfill('0') << std::dec << endHtml << '\r' << '\n';
+    htmlHeader << "StartFragment:" << std::setw(10) << std::setfill('0') << std::dec << startFragment << '\r' << '\n';
+    htmlHeader << "EndFragment:" << std::setw(10) << std::setfill('0') << std::dec << endFragment << '\r' << '\n';
+    return htmlHeader.str();
+}
+
+// the case of these tags has to match what we output in our filters
+// both tags don't allow parameters
+const std::string TAG_HTML("<html>");
+const std::string TAG_END_HTML("</html>");
+
+// The body tag may have parameters so we need to search for the
+// closing '>' manually e.g. <body param> #92840#
+const std::string TAG_BODY("<body");
+const std::string TAG_END_BODY("</body");
+
+Sequence<sal_Int8> TextHtmlToHTMLFormat(Sequence<sal_Int8> const & aTextHtml)
+{
+    OSL_ASSERT(aTextHtml.getLength() > 0);
+
+    if (aTextHtml.getLength() <= 0)
+        return Sequence<sal_Int8>();
+
+    // fill the buffer with dummy values to calc the exact length
+    std::string dummyHtmlHeader = GetHtmlFormatHeader(0, 0, 0, 0);
+    size_t lHtmlFormatHeader = dummyHtmlHeader.length();
+
+    std::string textHtml(
+        reinterpret_cast<const char*>(aTextHtml.getConstArray()),
+        reinterpret_cast<const char*>(aTextHtml.getConstArray()) + aTextHtml.getLength());
+
+    std::string::size_type nStartHtml = textHtml.find(TAG_HTML) + lHtmlFormatHeader - 1; // we start one before '<HTML>' Word 2000 does also so
+    std::string::size_type nEndHtml = textHtml.find(TAG_END_HTML) + lHtmlFormatHeader + TAG_END_HTML.length() + 1; // our SOffice 5.2 wants 2 behind </HTML>?
+
+    // The body tag may have parameters so we need to search for the
+    // closing '>' manually e.g. <BODY param> #92840#
+    std::string::size_type nStartFragment = textHtml.find(">", textHtml.find(TAG_BODY)) + lHtmlFormatHeader + 1;
+    std::string::size_type nEndFragment = textHtml.find(TAG_END_BODY) + lHtmlFormatHeader;
+
+    std::string htmlFormat = GetHtmlFormatHeader(nStartHtml, nEndHtml, nStartFragment, nEndFragment);
+    htmlFormat += textHtml;
+
+    Sequence<sal_Int8> byteSequence(htmlFormat.length() + 1); // space the trailing '\0'
+    memset(byteSequence.getArray(), 0, byteSequence.getLength());
+
+    memcpy(
+        static_cast<void*>(byteSequence.getArray()),
+        static_cast<const void*>(htmlFormat.c_str()),
+        htmlFormat.length());
+
+    return byteSequence;
+}
+
+static std::wstring getFileExtension(const std::wstring& aFilename)
+{
+    std::wstring::size_type idx = aFilename.rfind(L".");
+    if (idx != std::wstring::npos)
+    {
+        return std::wstring(aFilename, idx);
+    }
+    return std::wstring();
+}
+
+const std::wstring SHELL_LINK_FILE_EXTENSION = L".lnk";
+
+static bool isShellLink(const std::wstring& aFilename)
+{
+    std::wstring ext = getFileExtension(aFilename);
+    return (_wcsicmp(ext.c_str(), SHELL_LINK_FILE_EXTENSION.c_str()) == 0);
+}
+
+/** Resolve a Windows Shell Link (lnk) file. If a resolution
+    is not possible simply return the provided name of the
+    lnk file. */
+static std::wstring getShellLinkTarget(const std::wstring& aLnkFile)
+{
+    OSL_ASSERT(isShellLink(aLnkFile));
+
+    std::wstring target = aLnkFile;
+
+    try
+    {
+        sal::systools::COMReference<IShellLinkW> pIShellLink;
+        pIShellLink.CoCreateInstance(CLSID_ShellLink, nullptr, CLSCTX_INPROC_SERVER);
+
+        sal::systools::COMReference<IPersistFile> pIPersistFile(pIShellLink,
+                                                                sal::systools::COM_QUERY_THROW);
+
+        HRESULT hr = pIPersistFile->Load(aLnkFile.c_str(), STGM_READ);
+        if (FAILED(hr))
+            return target;
+
+        hr = pIShellLink->Resolve(nullptr, SLR_UPDATE | SLR_NO_UI);
+        if (FAILED(hr))
+            return target;
+
+        wchar_t pathW[MAX_PATH];
+        WIN32_FIND_DATAW wfd;
+        hr = pIShellLink->GetPath(pathW, MAX_PATH, &wfd, SLGP_RAWPATH);
+        if (FAILED(hr))
+            return target;
+
+        target = pathW;
+    }
+    catch(sal::systools::ComError& ex)
+    {
+        OSL_FAIL(ex.what());
+    }
+    return target;
+}
+
+typedef Sequence<sal_Int8> ByteSequence_t;
+
+/* Calculate the size required for turning a string list into
+   a double '\0' terminated string buffer */
+static size_t CalcSizeForStringListBuffer(const std::vector<std::wstring>& fileList)
+{
+    if ( fileList.empty() )
+        return 0;
+
+    size_t size = 1; // one for the very final '\0'
+    for (auto const& elem : fileList)
+    {
+        size += elem.length() + 1; // length including terminating '\0'
+    }
+    return (size * sizeof(std::vector<std::wstring>::value_type::value_type));
+}
+
+static ByteSequence_t FileListToByteSequence(const std::vector<std::wstring>& fileList)
+{
+    ByteSequence_t bseq;
+    size_t size = CalcSizeForStringListBuffer(fileList);
+
+    if (size > 0)
+    {
+        bseq.realloc(size);
+        wchar_t* p = reinterpret_cast<wchar_t*>(bseq.getArray());
+        ZeroMemory(p, size);
+
+        for (auto const& elem : fileList)
+        {
+            wcsncpy(p, elem.c_str(), elem.length());
+            p += (elem.length() + 1);
+        }
+    }
+    return bseq;
+}
+
+css::uno::Sequence<sal_Int8> CF_HDROPToFileList(HGLOBAL hGlobal)
+{
+    UINT nFiles = DragQueryFileW(static_cast<HDROP>(hGlobal), 0xFFFFFFFF, nullptr, 0);
+    std::vector<std::wstring> files;
+
+    for (UINT i = 0; i < nFiles; i++)
+    {
+        wchar_t buff[MAX_PATH];
+        /*UINT size =*/ DragQueryFileW(static_cast<HDROP>(hGlobal), i, buff, MAX_PATH);
+        std::wstring filename = buff;
+        if (isShellLink(filename))
+            filename = getShellLinkTarget(filename);
+        files.push_back(filename);
+    }
+    return FileListToByteSequence(files);
+}
+
+// convert a windows bitmap handle into a LibreOffice bitmap
+
+Sequence< sal_Int8 > WinBITMAPToOOBMP( HBITMAP aHBMP )
+{
+    Sequence< sal_Int8 > ooBmpStream;
+
+    SIZE aBmpSize;
+    if( GetBitmapDimensionEx( aHBMP, &aBmpSize ) )
+    {
+        // fill bitmap info header
+        size_t nDataBytes = 4 * aBmpSize.cy * aBmpSize.cy;
+        Sequence< sal_Int8 > aBitmapStream(
+            sizeof(BITMAPINFO) +
+            nDataBytes
+            );
+        PBITMAPINFOHEADER pBmp = reinterpret_cast<PBITMAPINFOHEADER>(aBitmapStream.getArray());
+        pBmp->biSize = sizeof( BITMAPINFOHEADER );
+        pBmp->biWidth  = aBmpSize.cx;
+        pBmp->biHeight = aBmpSize.cy;
+        pBmp->biPlanes = 1;
+        pBmp->biBitCount = 32;
+        pBmp->biCompression = BI_RGB;
+        pBmp->biSizeImage = static_cast<DWORD>(nDataBytes);
+        pBmp->biXPelsPerMeter = 1000;
+        pBmp->biYPelsPerMeter = 1000;
+        pBmp->biClrUsed = 0;
+        pBmp->biClrImportant = 0;
+        if( GetDIBits( nullptr, // DC, 0 is a default GC, basically that of the desktop
+                       aHBMP,
+                       0, aBmpSize.cy,
+                       aBitmapStream.getArray() + sizeof(BITMAPINFO),
+                       reinterpret_cast<LPBITMAPINFO>(pBmp),
+                       DIB_RGB_COLORS ) )
+        {
+            ooBmpStream = WinDIBToOOBMP( aBitmapStream );
+        }
+    }
+
+    return ooBmpStream;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/FmtFilter.hxx b/vcl/win/dtrans/FmtFilter.hxx
new file mode 100644
index 0000000000..b4fb1e1fc3
--- /dev/null
+++ b/vcl/win/dtrans/FmtFilter.hxx
@@ -0,0 +1,84 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+
+#include <com/sun/star/uno/Sequence.hxx>
+
+#if !defined WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <objidl.h>
+
+/*------------------------------------------------------------------------
+    input:
+    aMetaFilePict - a sequence of bytes containing a METAFILEPICT struct
+------------------------------------------------------------------------*/
+css::uno::Sequence<sal_Int8> WinMFPictToOOMFPict(css::uno::Sequence<sal_Int8>& aMetaFilePict);
+css::uno::Sequence<sal_Int8> WinENHMFPictToOOMFPict(HENHMETAFILE hEnhMetaFile);
+
+/*------------------------------------------------------------------------
+    input:
+    aByteStream - a sequence of bytes containing a LibreOffice metafile
+                  picture with a leading METAFILEHEADER
+------------------------------------------------------------------------*/
+HMETAFILEPICT OOMFPictToWinMFPict(css::uno::Sequence<sal_Int8> const& aOOMetaFilePict);
+HENHMETAFILE OOMFPictToWinENHMFPict(css::uno::Sequence<sal_Int8> const& aOOMetaFilePict);
+
+/*------------------------------------------------------------------------
+    input:
+    aWinDIB - sequence of bytes containing a windows device independent
+              bitmap
+------------------------------------------------------------------------*/
+css::uno::Sequence<sal_Int8> WinDIBToOOBMP(const css::uno::Sequence<sal_Int8>& aWinDIB);
+
+/*------------------------------------------------------------------------
+    input:
+    aWinDIB - sequence of bytes containing a windows bitmap handle
+------------------------------------------------------------------------*/
+css::uno::Sequence<sal_Int8> WinBITMAPToOOBMP(HBITMAP);
+
+/*------------------------------------------------------------------------
+    input:
+    aOOBmp - sequence of bytes containing a LibreOffice bitmap
+    May contain CF_DIBV5 or CF_DIB, but removing the BITMAPFILEHEADER
+    is always the same size
+------------------------------------------------------------------------*/
+css::uno::Sequence<sal_Int8> OOBmpToWinDIB(css::uno::Sequence<sal_Int8>& aOOBmp);
+
+/*------------------------------------------------------------------------
+    input:
+    aTextHtml - a sequence of text/html which will be converted to the
+    HTML Format; the HTML Format has header before the real html data
+    the Format is described in the MSDN Library under HTML Clipboard
+    Format
+------------------------------------------------------------------------*/
+css::uno::Sequence<sal_Int8> TextHtmlToHTMLFormat(css::uno::Sequence<sal_Int8> const& aTextHtml);
+
+/**
+    Return a FileList in which Windows Shell Links (lnk) are resolved.
+    If for whatever reason a resolution is not possible leave the
+    original lnk file.
+*/
+css::uno::Sequence<sal_Int8> CF_HDROPToFileList(HGLOBAL hGlobal);
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/ImplHelper.cxx b/vcl/win/dtrans/ImplHelper.cxx
new file mode 100644
index 0000000000..84c7383b2c
--- /dev/null
+++ b/vcl/win/dtrans/ImplHelper.cxx
@@ -0,0 +1,352 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <osl/diagnose.h>
+#include "ImplHelper.hxx"
+#include <rtl/tencinfo.h>
+#include <o3tl/char16_t2wchar_t.hxx>
+#include <string.h>
+#include <memory>
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+
+#include <vector>
+
+#define FORMATETC_EXACT_MATCH    1
+#define FORMATETC_PARTIAL_MATCH -1
+#define FORMATETC_NO_MATCH       0
+
+// returns a windows codepage appropriate to the
+// given mime charset parameter value
+
+sal_uInt32 getWinCPFromMimeCharset( const OUString& charset )
+{
+    sal_uInt32 winCP = GetACP( );
+
+    if ( charset.getLength( ) )
+    {
+        OString osCharset(
+            charset.getStr( ), charset.getLength( ), RTL_TEXTENCODING_ASCII_US );
+
+        rtl_TextEncoding txtEnc =
+            rtl_getTextEncodingFromMimeCharset( osCharset.getStr( ) );
+
+        sal_uIntPtr winChrs = rtl_getBestWindowsCharsetFromTextEncoding( txtEnc );
+
+        CHARSETINFO chrsInf;
+        bool bRet = TranslateCharsetInfo( reinterpret_cast<DWORD*>(winChrs), &chrsInf, TCI_SRCCHARSET );
+
+        // if one of the above functions fails
+        // we will return the current ANSI codepage
+        // of this thread
+        if ( bRet )
+            winCP = chrsInf.ciACP;
+    }
+
+    return winCP;
+}
+
+// returns a windows codepage appropriate to the
+// given locale and locale type
+
+OUString getWinCPFromLocaleId( LCID lcid, LCTYPE lctype )
+{
+    OSL_ASSERT( IsValidLocale( lcid, LCID_SUPPORTED ) );
+
+    // we set a default value
+    OUString winCP;
+
+    // set a default value
+    if ( LOCALE_IDEFAULTCODEPAGE == lctype )
+    {
+        winCP = OUString::number( static_cast<sal_Int32>(GetOEMCP( )) );
+    }
+    else if ( LOCALE_IDEFAULTANSICODEPAGE == lctype )
+    {
+        winCP = OUString::number( static_cast<sal_Int32>(GetACP( )) );
+    }
+    else
+        OSL_ASSERT( false );
+
+    // First, get required buffer size, in characters
+    int nResult = GetLocaleInfoW(
+        lcid, lctype, nullptr, 0 );
+
+    OSL_ASSERT( nResult );
+
+    if ( nResult )
+    {
+        std::unique_ptr<wchar_t[]> buff( new wchar_t[nResult] );
+        // Now get the actual data
+        nResult = GetLocaleInfoW( lcid, lctype, buff.get(), nResult );
+
+        OSL_ASSERT(nResult);
+
+        if (nResult)
+            winCP = o3tl::toU( buff.get() );
+
+    }
+
+    return winCP;
+}
+
+// returns a mime charset parameter value appropriate
+// to the given codepage, optional a prefix can be
+// given, e.g. "windows-" or "cp"
+
+OUString getMimeCharsetFromWinCP( sal_uInt32 cp, std::u16string_view aPrefix )
+{
+    return aPrefix + cptostr( cp );
+}
+
+// returns a mime charset parameter value appropriate
+// to the given locale id and locale type, optional a
+// prefix can be given, e.g. "windows-" or "cp"
+
+OUString getMimeCharsetFromLocaleId( LCID lcid, LCTYPE lctype, std::u16string_view aPrefix  )
+{
+    OUString charset = getWinCPFromLocaleId( lcid, lctype );
+    return aPrefix + charset;
+}
+
+// IsOEMCP
+
+bool IsOEMCP( sal_uInt32 codepage )
+{
+    OSL_ASSERT( IsValidCodePage( codepage ) );
+
+    sal_uInt32 arrOEMCP[] = { 437, 708, 709, 710, 720, 737,
+                              775, 850, 852, 855, 857, 860,
+                              861, 862, 863, 864, 865, 866,
+                              869, 874, 932, 936, 949, 950, 1361 };
+
+    for ( size_t i = 0; i < SAL_N_ELEMENTS( arrOEMCP ); ++i )
+        if ( arrOEMCP[i] == codepage )
+            return true;
+
+    return false;
+}
+
+// converts a codepage into its string representation
+
+OUString cptostr( sal_uInt32 codepage )
+{
+    OSL_ASSERT( IsValidCodePage( codepage ) );
+
+    return OUString::number( static_cast<sal_Int64>( codepage ) );
+}
+
+// OleStdDeleteTargetDevice()
+//
+// Purpose:
+//
+// Parameters:
+//
+// Return Value:
+//    SCODE  -  S_OK if successful
+void DeleteTargetDevice( DVTARGETDEVICE* ptd )
+{
+    __try
+    {
+        CoTaskMemFree( ptd );
+    }
+    __except( EXCEPTION_EXECUTE_HANDLER )
+    {
+        OSL_FAIL( "Error DeleteTargetDevice" );
+    }
+}
+
+// OleStdCopyTargetDevice()
+//
+// Purpose:
+//  duplicate a TARGETDEVICE struct. this function allocates memory for
+//  the copy. the caller MUST free the allocated copy when done with it
+//  using the standard allocator returned from CoGetMalloc.
+//  (OleStdFree can be used to free the copy).
+//
+// Parameters:
+//  ptdSrc      pointer to source TARGETDEVICE
+//
+// Return Value:
+//    pointer to allocated copy of ptdSrc
+//    if ptdSrc==NULL then returns NULL is returned.
+//    if ptdSrc!=NULL and memory allocation fails, then NULL is returned
+DVTARGETDEVICE* CopyTargetDevice( DVTARGETDEVICE* ptdSrc )
+{
+    DVTARGETDEVICE* ptdDest = nullptr;
+
+    __try
+    {
+        if ( nullptr != ptdSrc )
+        {
+            ptdDest = static_cast< DVTARGETDEVICE* >( CoTaskMemAlloc( ptdSrc->tdSize ) );
+            memcpy( ptdDest, ptdSrc, static_cast< size_t >( ptdSrc->tdSize ) );
+        }
+    }
+    __except( EXCEPTION_EXECUTE_HANDLER )
+    {
+    }
+
+    return ptdDest;
+}
+
+// OleStdCopyFormatEtc()
+//
+// Purpose:
+//  Copies the contents of a FORMATETC structure. this function takes
+//  special care to copy correctly copying the pointer to the TARGETDEVICE
+//  contained within the source FORMATETC structure.
+//  if the source FORMATETC has a non-NULL TARGETDEVICE, then a copy
+//  of the TARGETDEVICE will be allocated for the destination of the
+//  FORMATETC (petcDest).
+//
+//  NOTE: the caller MUST free the allocated copy of the TARGETDEVICE
+//  within the destination FORMATETC when done with it
+//  using the standard allocator returned from CoGetMalloc.
+//  (OleStdFree can be used to free the copy).
+//
+// Parameters:
+//  petcDest      pointer to destination FORMATETC
+//  petcSrc       pointer to source FORMATETC
+//
+// Return Value:
+//  returns TRUE if copy was successful;
+//  returns FALSE if not successful, e.g. one or both of the pointers
+//  were invalid or the pointers were equal
+bool CopyFormatEtc( LPFORMATETC petcDest, LPFORMATETC petcSrc )
+{
+    bool bRet = false;
+
+    __try
+    {
+        if ( petcDest != petcSrc )
+        {
+
+            petcDest->cfFormat = petcSrc->cfFormat;
+
+            petcDest->ptd      = nullptr;
+            if ( nullptr != petcSrc->ptd )
+                petcDest->ptd  = CopyTargetDevice(petcSrc->ptd);
+
+            petcDest->dwAspect = petcSrc->dwAspect;
+            petcDest->lindex   = petcSrc->lindex;
+            petcDest->tymed    = petcSrc->tymed;
+
+            bRet = true;
+        }
+    }
+    __except( EXCEPTION_EXECUTE_HANDLER )
+    {
+        OSL_FAIL( "Error CopyFormatEtc" );
+    }
+
+    return bRet;
+}
+
+// returns:
+//  1 for exact match,
+//  0 for no match,
+// -1 for partial match (which is defined to mean the left is a subset
+//    of the right: fewer aspects, null target device, fewer medium).
+
+sal_Int32 CompareFormatEtc( const FORMATETC* pFetcLhs, const FORMATETC* pFetcRhs )
+{
+    sal_Int32 nMatch = FORMATETC_EXACT_MATCH;
+
+    __try
+    {
+        if ( pFetcLhs != pFetcRhs )
+        {
+            if ( ( pFetcLhs->cfFormat != pFetcRhs->cfFormat ) ||
+                ( pFetcLhs->lindex   != pFetcRhs->lindex ) ||
+                !CompareTargetDevice( pFetcLhs->ptd, pFetcRhs->ptd ) )
+            {
+                nMatch = FORMATETC_NO_MATCH;
+            }
+
+            else if ( pFetcLhs->dwAspect == pFetcRhs->dwAspect )
+                // same aspects; equal
+                ;
+            else if ( ( pFetcLhs->dwAspect & ~pFetcRhs->dwAspect ) != 0 )
+            {
+                // left not subset of aspects of right; not equal
+                nMatch = FORMATETC_NO_MATCH;
+            }
+            else
+                // left subset of right
+                nMatch = FORMATETC_PARTIAL_MATCH;
+
+            if ( nMatch == FORMATETC_EXACT_MATCH || nMatch == FORMATETC_PARTIAL_MATCH )
+            {
+                if ( pFetcLhs->tymed == pFetcRhs->tymed )
+                    // same medium flags; equal
+                    ;
+                else if ( ( pFetcLhs->tymed & ~pFetcRhs->tymed ) != 0 )
+                {
+                    // left not subset of medium flags of right; not equal
+                    nMatch = FORMATETC_NO_MATCH;
+                }
+                else
+                    // left subset of right
+                    nMatch = FORMATETC_PARTIAL_MATCH;
+            }
+        }
+    }
+    __except( EXCEPTION_EXECUTE_HANDLER )
+    {
+        OSL_FAIL( "Error CompareFormatEtc" );
+        nMatch = FORMATETC_NO_MATCH;
+    }
+
+    return nMatch;
+}
+
+bool CompareTargetDevice( DVTARGETDEVICE* ptdLeft, DVTARGETDEVICE const * ptdRight )
+{
+    bool bRet = false;
+
+    __try
+    {
+        if ( ptdLeft == ptdRight )
+        {
+            // same address of td; must be same (handles NULL case)
+            bRet = true;
+        }
+
+        // one of the two is NULL
+        else if ( ( nullptr != ptdRight ) && ( nullptr != ptdLeft ) )
+
+        if ( ptdLeft->tdSize == ptdRight->tdSize )
+
+        if ( memcmp( ptdLeft, ptdRight, ptdLeft->tdSize ) == 0 )
+            bRet = true;
+    }
+    __except( EXCEPTION_EXECUTE_HANDLER )
+    {
+        OSL_FAIL( "Error CompareTargetDevice" );
+        bRet = false;
+    }
+
+    return bRet;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/ImplHelper.hxx b/vcl/win/dtrans/ImplHelper.hxx
new file mode 100644
index 0000000000..df6731ec7a
--- /dev/null
+++ b/vcl/win/dtrans/ImplHelper.hxx
@@ -0,0 +1,74 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/config.h>
+
+#include <string_view>
+
+#include <sal/types.h>
+#include <rtl/ustring.hxx>
+
+#if !defined WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <objidl.h>
+
+// target device and formatetc helper
+void DeleteTargetDevice(DVTARGETDEVICE* ptd);
+bool CopyFormatEtc(LPFORMATETC petcDest, LPFORMATETC petcSrc);
+sal_Int32 CompareFormatEtc(const FORMATETC* pFetcLeft, const FORMATETC* pFetcRight);
+bool CompareTargetDevice(DVTARGETDEVICE* ptdLeft, DVTARGETDEVICE const* ptdRight);
+DVTARGETDEVICE* CopyTargetDevice(DVTARGETDEVICE* ptdSrc);
+
+// some codepage helper functions
+
+// returns a windows codepage appropriate to the
+// given mime charset parameter value
+
+sal_uInt32 getWinCPFromMimeCharset(const OUString& charset);
+
+// returns a windows codepage appropriate to the
+// given locale and locale type
+
+OUString getWinCPFromLocaleId(LCID lcid, LCTYPE lctype);
+
+// returns a mime charset parameter value appropriate
+// to the given codepage, optional a prefix can be
+// given, e.g. "windows-" or "cp"
+
+OUString getMimeCharsetFromWinCP(sal_uInt32 cp, std::u16string_view aPrefix);
+
+// returns a mime charset parameter value appropriate
+// to the given locale id and locale type, optional a
+// prefix can be given, e.g. "windows-" or "cp"
+
+OUString getMimeCharsetFromLocaleId(LCID lcid, LCTYPE lctype, std::u16string_view aPrefix);
+
+// returns true, if a given codepage is an oem codepage
+
+bool IsOEMCP(sal_uInt32 codepage);
+
+// converts a codepage into a string representation
+
+OUString cptostr(sal_uInt32 codepage);
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/MimeAttrib.hxx b/vcl/win/dtrans/MimeAttrib.hxx
new file mode 100644
index 0000000000..48dd5fc11e
--- /dev/null
+++ b/vcl/win/dtrans/MimeAttrib.hxx
@@ -0,0 +1,31 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <rtl/ustring.hxx>
+
+constexpr OUString TEXTPLAIN_PARAM_CHARSET(u"charset"_ustr);
+
+constexpr OUString PRE_WINDOWS_CODEPAGE(u"windows"_ustr);
+constexpr OUString PRE_OEM_CODEPAGE(u"cp"_ustr);
+constexpr OUString CHARSET_UTF16(u"utf-16"_ustr);
+constexpr OUString CHARSET_UNICODE(u"unicode"_ustr);
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/MtaOleClipb.cxx b/vcl/win/dtrans/MtaOleClipb.cxx
new file mode 100644
index 0000000000..fcf16df1ad
--- /dev/null
+++ b/vcl/win/dtrans/MtaOleClipb.cxx
@@ -0,0 +1,748 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+/*
+    MtaOleClipb.cxx - documentation
+
+    This class setup a single threaded apartment (sta) thread to deal with
+    the ole clipboard, which runs only in an sta thread.
+    The consequence is that callback from the ole clipboard are in the
+    context of this sta thread. In the soffice applications this may lead
+    to problems because they all use the one and only mutex called
+    SolarMutex.
+    In order to transfer clipboard requests to our sta thread we use a
+    hidden window and forward these requests via window messages.
+*/
+
+#include <osl/diagnose.h>
+#include <sal/log.hxx>
+
+#include "MtaOleClipb.hxx"
+
+#include <svsys.h>
+#include <win/saldata.hxx>
+
+#include <osl/thread.h>
+
+#include <wchar.h>
+#include <process.h>
+
+#include <systools/win32/comtools.hxx>
+#include <systools/win32/retry_if_failed.hxx>
+
+#include <comphelper/windowserrorstring.hxx>
+
+namespace /* private */
+{
+    const wchar_t g_szWndClsName[] = L"MtaOleReqWnd###";
+
+    // messages constants
+
+    const sal_uInt32 MSG_SETCLIPBOARD               = WM_USER + 0x0001;
+    const sal_uInt32 MSG_GETCLIPBOARD               = WM_USER + 0x0002;
+    const sal_uInt32 MSG_REGCLIPVIEWER              = WM_USER + 0x0003;
+    const sal_uInt32 MSG_FLUSHCLIPBOARD             = WM_USER + 0x0004;
+    const sal_uInt32 MSG_SHUTDOWN                   = WM_USER + 0x0005;
+
+    const sal_uInt32 MAX_WAITTIME                   = 10000;  // msec
+    const sal_uInt32 MAX_WAIT_SHUTDOWN              = 10000; // msec
+
+    const bool MANUAL_RESET = true;
+    const bool INIT_NONSIGNALED = false;
+
+    /*  Cannot use osl conditions because they are blocking
+        without waking up on messages sent by another thread
+        this leads to deadlocks because we are blocking the
+        communication between inter-thread marshalled COM
+        pointers.
+        COM Proxy-Stub communication uses SendMessages for
+        synchronization purposes.
+    */
+    class Win32Condition
+    {
+    public:
+        Win32Condition() = default;
+
+        ~Win32Condition() { CloseHandle(m_hEvent); }
+
+        // wait infinite for own event (or abort event) be signaled
+        // leave messages sent through
+        bool wait(HANDLE hEvtAbort)
+        {
+            const HANDLE hWaitArray[2] = { m_hEvent, hEvtAbort };
+            while (true)
+            {
+                DWORD dwResult
+                    = MsgWaitForMultipleObjects(2, hWaitArray, FALSE, INFINITE, QS_SENDMESSAGE);
+
+                switch (dwResult)
+                {
+                    case WAIT_OBJECT_0: // wait successful
+                        return true;
+
+                    case WAIT_OBJECT_0 + 1: // wait aborted
+                        return false;
+
+                    case WAIT_OBJECT_0 + 2:
+                    {
+                        /* PeekMessage processes all messages in the SendMessage
+                           queue that's what we want, messages from the PostMessage
+                           queue stay untouched */
+                        MSG msg;
+                        PeekMessageW(&msg, nullptr, 0, 0, PM_NOREMOVE);
+
+                        break;
+                    }
+
+                    default: // WAIT_FAILED?
+                        return false;
+                }
+            }
+        }
+
+        // set the event
+        void set() { SetEvent(m_hEvent); }
+
+    private:
+        HANDLE m_hEvent = CreateEventW(nullptr, MANUAL_RESET, INIT_NONSIGNALED, nullptr);
+
+        // prevent copy/assignment
+        Win32Condition(const Win32Condition&) = delete;
+        Win32Condition& operator=(const Win32Condition&) = delete;
+    };
+
+    // we use one condition for every request
+
+    struct MsgCtx
+    {
+        Win32Condition  aCondition;
+        HRESULT         hr;
+    };
+
+} /* namespace private */
+
+//  static member initialization
+
+CMtaOleClipboard* CMtaOleClipboard::s_theMtaOleClipboardInst = nullptr;
+
+// marshal an IDataObject
+
+//inline
+static HRESULT MarshalIDataObjectInStream( IDataObject* pIDataObject, LPSTREAM* ppStream )
+{
+    OSL_ASSERT( nullptr != pIDataObject );
+    OSL_ASSERT( nullptr != ppStream );
+
+    *ppStream = nullptr;
+    return CoMarshalInterThreadInterfaceInStream(
+        __uuidof(IDataObject),  //The IID of interface to be marshalled
+        pIDataObject,           //The interface pointer
+        ppStream                //IStream pointer
+        );
+}
+
+// unmarshal an IDataObject
+
+//inline
+static HRESULT UnmarshalIDataObjectAndReleaseStream( LPSTREAM lpStream, IDataObject** ppIDataObject )
+{
+    OSL_ASSERT( nullptr != lpStream );
+    OSL_ASSERT( nullptr != ppIDataObject );
+
+    *ppIDataObject = nullptr;
+    return CoGetInterfaceAndReleaseStream(
+        lpStream,
+        __uuidof(IDataObject),
+        reinterpret_cast<LPVOID*>(ppIDataObject));
+}
+
+// helper class to ensure that the calling thread has com initialized
+
+namespace {
+
+class CAutoComInit
+{
+public:
+   /*
+       to be safe we call CoInitializeEx
+       although it is not necessary if
+       the calling thread was created
+       using osl_CreateThread because
+       this function calls CoInitializeEx
+       for every thread it creates
+    */
+    CAutoComInit( ) : m_hResult( CoInitializeEx( nullptr, COINIT_APARTMENTTHREADED ) )
+    {
+        if ( S_OK == m_hResult )
+            OSL_FAIL(
+            "com was not yet initialized, the thread was not created using osl_createThread" );
+        else if ( FAILED( m_hResult ) && !( RPC_E_CHANGED_MODE == m_hResult ) )
+            OSL_FAIL(
+            "com could not be initialized, maybe the thread was not created using osl_createThread" );
+    }
+
+    ~CAutoComInit( )
+    {
+        /*
+            we only call CoUninitialize when
+            CoInitializeEx returned S_FALSE, what
+            means that com was already initialize
+            for that thread so we keep the balance
+            if CoInitializeEx returned S_OK what means
+            com was not yet initialized we better
+            let com initialized or we may run into
+            the realm of undefined behaviour
+        */
+        if ( m_hResult == S_FALSE )
+            CoUninitialize( );
+    }
+
+private:
+    HRESULT m_hResult;
+};
+
+}
+
+// ctor
+
+CMtaOleClipboard::CMtaOleClipboard( ) :
+    m_hOleThread( nullptr ),
+    m_uOleThreadId( 0 ),
+    // signals that the thread was successfully setup
+    m_hEvtThrdReady(CreateEventW( nullptr, MANUAL_RESET, INIT_NONSIGNALED, nullptr )),
+    m_hwndMtaOleReqWnd( nullptr ),
+    // signals that the window is destroyed - to stop waiting any winproc result
+    m_hEvtWndDisposed(CreateEventW(nullptr, MANUAL_RESET, INIT_NONSIGNALED, nullptr)),
+    m_MtaOleReqWndClassAtom( 0 ),
+    m_pfncClipViewerCallback( nullptr ),
+    m_bRunClipboardNotifierThread( true ),
+    m_hClipboardChangedEvent( m_hClipboardChangedNotifierEvents[0] ),
+    m_hTerminateClipboardChangedNotifierEvent( m_hClipboardChangedNotifierEvents[1] ),
+    m_ClipboardChangedEventCount( 0 )
+{
+    OSL_ASSERT( nullptr != m_hEvtThrdReady );
+    SAL_WARN_IF(!m_hEvtWndDisposed, "vcl.win.dtrans", "CreateEventW failed: m_hEvtWndDisposed is nullptr");
+
+    s_theMtaOleClipboardInst = this;
+
+    m_hOleThread = reinterpret_cast<HANDLE>(_beginthreadex(
+        nullptr, 0, CMtaOleClipboard::oleThreadProc, this, 0, &m_uOleThreadId ));
+    OSL_ASSERT( nullptr != m_hOleThread );
+
+    // setup the clipboard changed notifier thread
+
+    m_hClipboardChangedNotifierEvents[0] = CreateEventW( nullptr, MANUAL_RESET, INIT_NONSIGNALED, nullptr );
+    OSL_ASSERT( nullptr != m_hClipboardChangedNotifierEvents[0] );
+
+    m_hClipboardChangedNotifierEvents[1] = CreateEventW( nullptr, MANUAL_RESET, INIT_NONSIGNALED, nullptr );
+    OSL_ASSERT( nullptr != m_hClipboardChangedNotifierEvents[1] );
+
+    m_hClipboardChangedNotifierThread = reinterpret_cast<HANDLE>(_beginthreadex(
+        nullptr, 0, CMtaOleClipboard::clipboardChangedNotifierThreadProc, this, 0, nullptr ));
+
+    OSL_ASSERT( nullptr != m_hClipboardChangedNotifierThread );
+}
+
+// dtor
+
+CMtaOleClipboard::~CMtaOleClipboard( )
+{
+    // block calling threads out
+    if ( nullptr != m_hEvtThrdReady )
+        ResetEvent( m_hEvtThrdReady );
+
+    // terminate the clipboard changed notifier thread
+    m_bRunClipboardNotifierThread = false;
+    SetEvent( m_hTerminateClipboardChangedNotifierEvent );
+
+    // unblock whoever could still wait for event processing
+    if (m_hEvtWndDisposed)
+        SetEvent(m_hEvtWndDisposed);
+
+    sal_uInt32 dwResult = WaitForSingleObject(
+        m_hClipboardChangedNotifierThread, MAX_WAIT_SHUTDOWN );
+
+    OSL_ENSURE( dwResult == WAIT_OBJECT_0, "clipboard notifier thread could not terminate" );
+
+    if ( nullptr != m_hClipboardChangedNotifierThread )
+        CloseHandle( m_hClipboardChangedNotifierThread );
+
+    if ( nullptr != m_hClipboardChangedNotifierEvents[0] )
+        CloseHandle( m_hClipboardChangedNotifierEvents[0] );
+
+    if ( nullptr != m_hClipboardChangedNotifierEvents[1] )
+        CloseHandle( m_hClipboardChangedNotifierEvents[1] );
+
+    // end the thread
+    // because DestroyWindow can only be called
+    // from within the thread that created the window
+    sendMessage( MSG_SHUTDOWN );
+
+    // wait for thread shutdown
+    dwResult = WaitForSingleObject( m_hOleThread, MAX_WAIT_SHUTDOWN );
+    OSL_ENSURE( dwResult == WAIT_OBJECT_0, "OleThread could not terminate" );
+
+    if ( nullptr != m_hOleThread )
+        CloseHandle( m_hOleThread );
+
+    if ( nullptr != m_hEvtThrdReady )
+        CloseHandle( m_hEvtThrdReady );
+
+    if (m_hEvtWndDisposed)
+        CloseHandle(m_hEvtWndDisposed);
+
+    if ( m_MtaOleReqWndClassAtom )
+        UnregisterClassW( g_szWndClsName, nullptr );
+
+    OSL_ENSURE( ( nullptr == m_pfncClipViewerCallback ),
+                "Clipboard viewer not properly unregistered" );
+}
+
+HRESULT CMtaOleClipboard::flushClipboard( )
+{
+    if ( !WaitForThreadReady( ) )
+    {
+        OSL_FAIL( "clipboard sta thread not ready" );
+        return E_FAIL;
+    }
+
+    OSL_ENSURE( GetCurrentThreadId( ) != m_uOleThreadId,
+        "flushClipboard from within clipboard sta thread called" );
+
+    MsgCtx  aMsgCtx;
+
+    const bool bWaitSuccess = postMessage(MSG_FLUSHCLIPBOARD, 0, reinterpret_cast<LPARAM>(&aMsgCtx))
+                              && aMsgCtx.aCondition.wait(m_hEvtWndDisposed);
+
+    return bWaitSuccess ? aMsgCtx.hr : E_ABORT;
+}
+
+HRESULT CMtaOleClipboard::getClipboard( IDataObject** ppIDataObject )
+{
+    OSL_PRECOND( nullptr != ppIDataObject, "invalid parameter" );
+    OSL_PRECOND( GetCurrentThreadId( ) != m_uOleThreadId, "getClipboard from within clipboard sta thread called" );
+
+    if ( !WaitForThreadReady( ) )
+    {
+        OSL_FAIL( "clipboard sta thread not ready" );
+        return E_FAIL;
+    }
+
+    CAutoComInit comAutoInit;
+
+    LPSTREAM lpStream;
+
+    *ppIDataObject = nullptr;
+
+    MsgCtx    aMsgCtx;
+
+    const bool bWaitSuccess = postMessage(MSG_GETCLIPBOARD, reinterpret_cast<WPARAM>(&lpStream),
+                                          reinterpret_cast<LPARAM>(&aMsgCtx))
+                              && aMsgCtx.aCondition.wait(m_hEvtWndDisposed);
+
+    HRESULT hr = bWaitSuccess ? aMsgCtx.hr : E_ABORT;
+
+    if ( SUCCEEDED( hr ) )
+    {
+        hr = UnmarshalIDataObjectAndReleaseStream( lpStream, ppIDataObject );
+        OSL_ENSURE( SUCCEEDED( hr ), "unmarshalling clipboard data object failed" );
+    }
+
+    return hr;
+}
+
+// this is an asynchronous method that's why we don't wait until the
+// request is completed
+
+HRESULT CMtaOleClipboard::setClipboard( IDataObject* pIDataObject )
+{
+    if ( !WaitForThreadReady( ) )
+    {
+        OSL_FAIL( "clipboard sta thread not ready" );
+        return E_FAIL;
+    }
+
+    CAutoComInit comAutoInit;
+
+    OSL_ENSURE( GetCurrentThreadId( ) != m_uOleThreadId, "setClipboard from within the clipboard sta thread called" );
+
+    // because we marshall this request
+    // into the sta thread we better
+    // acquire the interface here so
+    // that the object will not be
+    // destroyed before the ole clipboard
+    // can acquire it
+    // remember: pIDataObject may be NULL
+    // which is a request to clear the
+    // current clipboard content
+    if ( pIDataObject )
+        pIDataObject->AddRef( );
+
+    postMessage(
+        MSG_SETCLIPBOARD,
+        reinterpret_cast< WPARAM >( pIDataObject ) );
+
+    // because this is an asynchronous function
+    // the return value is useless
+    return S_OK;
+}
+
+// register a clipboard viewer
+
+bool CMtaOleClipboard::registerClipViewer( LPFNC_CLIPVIEWER_CALLBACK_t pfncClipViewerCallback )
+{
+    if ( !WaitForThreadReady( ) )
+    {
+        OSL_FAIL( "clipboard sta thread not ready" );
+        return false;
+    }
+
+    OSL_ENSURE( GetCurrentThreadId( ) != m_uOleThreadId, "registerClipViewer from within the OleThread called" );
+
+    MsgCtx aMsgCtx;
+
+    if (postMessage(MSG_REGCLIPVIEWER, reinterpret_cast<WPARAM>(pfncClipViewerCallback),
+                    reinterpret_cast<LPARAM>(&aMsgCtx)))
+        aMsgCtx.aCondition.wait(m_hEvtWndDisposed);
+
+    return false;
+}
+
+// register a clipboard viewer
+
+bool CMtaOleClipboard::onRegisterClipViewer( LPFNC_CLIPVIEWER_CALLBACK_t pfncClipViewerCallback )
+{
+    bool bRet = false;
+
+    // we need exclusive access because the clipboard changed notifier
+    // thread also accesses this variable
+    std::unique_lock aGuard( m_pfncClipViewerCallbackMutex );
+
+    // register if not yet done
+    if ( ( nullptr != pfncClipViewerCallback ) && ( nullptr == m_pfncClipViewerCallback ) )
+    {
+        // SetClipboardViewer sends a WM_DRAWCLIPBOARD message we ignore
+        // this message if we register ourself as clip viewer
+        m_bInRegisterClipViewer = true;
+        bRet = AddClipboardFormatListener(m_hwndMtaOleReqWnd);
+        m_bInRegisterClipViewer = false;
+
+        // save the new callback function
+        m_pfncClipViewerCallback = pfncClipViewerCallback;
+    }
+    else if ( ( nullptr == pfncClipViewerCallback ) && ( nullptr != m_pfncClipViewerCallback ) )
+    {
+        m_pfncClipViewerCallback = nullptr;
+
+        // unregister if input parameter is NULL and we previously registered
+        // as clipboard viewer
+        bRet = RemoveClipboardFormatListener(m_hwndMtaOleReqWnd);
+    }
+
+    return bRet;
+}
+
+HRESULT CMtaOleClipboard::onSetClipboard( IDataObject* pIDataObject )
+{
+    return sal::systools::RetryIfFailed(10, 100,
+                                        [pIDataObject] { return OleSetClipboard(pIDataObject); });
+}
+
+HRESULT CMtaOleClipboard::onGetClipboard( LPSTREAM* ppStream )
+{
+    OSL_ASSERT(nullptr != ppStream);
+
+    IDataObjectPtr pIDataObject;
+
+    // forward the request to the OleClipboard
+    HRESULT hr
+        = sal::systools::RetryIfFailed(10, 100, [p = &pIDataObject] { return OleGetClipboard(p); });
+    if ( SUCCEEDED( hr ) )
+    {
+        hr = MarshalIDataObjectInStream(pIDataObject.get(), ppStream);
+        OSL_ENSURE(SUCCEEDED(hr), "marshalling clipboard data object failed");
+    }
+    return hr;
+}
+
+// flush the ole-clipboard
+
+HRESULT CMtaOleClipboard::onFlushClipboard( )
+{
+    return sal::systools::RetryIfFailed(10, 100, [] { return OleFlushClipboard(); });
+}
+
+// handle clipboard update event
+
+LRESULT CMtaOleClipboard::onClipboardUpdate()
+{
+    // we don't send a notification if we are
+    // registering ourself as clipboard
+    if ( !m_bInRegisterClipViewer )
+    {
+        std::unique_lock aGuard( m_ClipboardChangedEventCountMutex );
+
+        m_ClipboardChangedEventCount++;
+        SetEvent( m_hClipboardChangedEvent );
+    }
+
+    return 0;
+}
+
+// SendMessage so we don't need to supply the HWND if we send
+// something to our wrapped window
+
+LRESULT CMtaOleClipboard::sendMessage( UINT msg, WPARAM wParam, LPARAM lParam )
+{
+    return ::SendMessageW( m_hwndMtaOleReqWnd, msg, wParam, lParam );
+}
+
+// PostMessage so we don't need to supply the HWND if we send
+// something to our wrapped window
+
+bool CMtaOleClipboard::postMessage( UINT msg, WPARAM wParam, LPARAM lParam )
+{
+    bool const ret = PostMessageW(m_hwndMtaOleReqWnd, msg, wParam, lParam);
+    SAL_WARN_IF(!ret, "vcl.win.dtrans", "ERROR: PostMessage() failed!");
+    return ret;
+}
+
+// the window proc
+
+LRESULT CALLBACK CMtaOleClipboard::mtaOleReqWndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
+{
+    LRESULT lResult = 0;
+
+    // get a connection to the class-instance via the static member
+    CMtaOleClipboard* pImpl = CMtaOleClipboard::s_theMtaOleClipboardInst;
+    OSL_ASSERT( nullptr != pImpl );
+
+    switch( uMsg )
+    {
+    case MSG_SETCLIPBOARD:
+        {
+            IDataObject* pIDataObject = reinterpret_cast< IDataObject* >( wParam );
+            CMtaOleClipboard::onSetClipboard( pIDataObject );
+
+            // in setClipboard we did acquire the
+            // interface pointer in order to prevent
+            // destruction of the object before the
+            // ole clipboard can acquire the interface
+            // now we release the interface so that
+            // our lostOwnership mechanism works
+            // remember: pIDataObject may be NULL
+            if ( pIDataObject )
+                pIDataObject->Release( );
+        }
+        break;
+
+    case MSG_GETCLIPBOARD:
+        {
+            MsgCtx* aMsgCtx = reinterpret_cast< MsgCtx* >( lParam );
+            OSL_ASSERT( aMsgCtx );
+
+            aMsgCtx->hr = CMtaOleClipboard::onGetClipboard( reinterpret_cast< LPSTREAM* >(wParam) );
+            aMsgCtx->aCondition.set( );
+        }
+        break;
+
+    case MSG_FLUSHCLIPBOARD:
+        {
+            MsgCtx* aMsgCtx = reinterpret_cast< MsgCtx* >( lParam );
+            OSL_ASSERT( aMsgCtx );
+
+            aMsgCtx->hr = CMtaOleClipboard::onFlushClipboard( );
+            aMsgCtx->aCondition.set( );
+        }
+        break;
+
+    case MSG_REGCLIPVIEWER:
+        {
+            MsgCtx* pMsgCtx = reinterpret_cast<MsgCtx*>(lParam);
+            SAL_WARN_IF(!pMsgCtx, "vcl.win.dtrans", "pMsgCtx is nullptr");
+
+            pImpl->onRegisterClipViewer(
+                reinterpret_cast<CMtaOleClipboard::LPFNC_CLIPVIEWER_CALLBACK_t>(wParam));
+            pMsgCtx->aCondition.set();
+        }
+        break;
+
+    case WM_CLIPBOARDUPDATE:
+        lResult = pImpl->onClipboardUpdate();
+        break;
+
+    case MSG_SHUTDOWN:
+        DestroyWindow( pImpl->m_hwndMtaOleReqWnd );
+        break;
+
+    // force the sta thread to end
+    case WM_DESTROY:
+        SetEvent(pImpl->m_hEvtWndDisposed); // stop waiting for conditions set by this wndproc
+        PostQuitMessage( 0 );
+        break;
+
+    default:
+        lResult = DefWindowProcW( hWnd, uMsg, wParam, lParam );
+        break;
+    }
+
+    return lResult;
+}
+
+void CMtaOleClipboard::createMtaOleReqWnd( )
+{
+    WNDCLASSEXW  wcex;
+
+    SalData* pSalData = GetSalData();
+    OSL_ASSERT(nullptr != pSalData->mhInst);
+
+    ZeroMemory( &wcex, sizeof(wcex) );
+
+    wcex.cbSize         = sizeof(wcex);
+    wcex.style          = 0;
+    wcex.lpfnWndProc    = CMtaOleClipboard::mtaOleReqWndProc;
+    wcex.cbClsExtra     = 0;
+    wcex.cbWndExtra     = 0;
+    wcex.hInstance      = pSalData->mhInst;
+    wcex.hIcon          = nullptr;
+    wcex.hCursor        = nullptr;
+    wcex.hbrBackground  = nullptr;
+    wcex.lpszMenuName   = nullptr;
+    wcex.lpszClassName  = g_szWndClsName;
+    wcex.hIconSm        = nullptr;
+
+    m_MtaOleReqWndClassAtom = RegisterClassExW( &wcex );
+
+    if ( 0 != m_MtaOleReqWndClassAtom )
+        m_hwndMtaOleReqWnd = CreateWindowW(
+            g_szWndClsName, nullptr, 0, 0, 0, 0, 0, nullptr, nullptr, pSalData->mhInst, nullptr );
+}
+
+unsigned int CMtaOleClipboard::run( )
+{
+    HRESULT hr = OleInitialize( nullptr );
+    OSL_ASSERT( SUCCEEDED( hr ) );
+
+    createMtaOleReqWnd( );
+
+    unsigned int nRet = ~0U; // = error
+
+    if ( IsWindow( m_hwndMtaOleReqWnd ) )
+    {
+        if ( nullptr != m_hEvtThrdReady )
+            SetEvent( m_hEvtThrdReady );
+
+        nRet = 0;
+
+        // pumping messages
+        for (;;)
+        {
+            MSG msg;
+            int const bRet = GetMessageW(&msg, nullptr, 0, 0);
+            if (bRet == 0)
+            {
+                break;
+            }
+            if (-1 == bRet)
+            {
+                SAL_WARN("vcl.win.dtrans", "GetMessageW failed: " << WindowsErrorString(GetLastError()));
+                nRet = ~0U;
+                break;
+            }
+            DispatchMessageW(&msg);
+        }
+    }
+
+    OleUninitialize( );
+
+    return nRet;
+}
+
+unsigned __stdcall CMtaOleClipboard::oleThreadProc( void* pParam )
+{
+    osl_setThreadName("CMtaOleClipboard::run()");
+
+    CMtaOleClipboard* pInst =
+        static_cast<CMtaOleClipboard*>( pParam );
+    OSL_ASSERT( nullptr != pInst );
+
+    return pInst->run( );
+}
+
+unsigned __stdcall CMtaOleClipboard::clipboardChangedNotifierThreadProc(void* pParam)
+{
+    osl_setThreadName("CMtaOleClipboard::clipboardChangedNotifierThreadProc()");
+    CMtaOleClipboard* pInst = static_cast< CMtaOleClipboard* >( pParam );
+    OSL_ASSERT( nullptr != pInst );
+
+    sal::systools::CoInitializeGuard aGuard(COINIT_APARTMENTTHREADED, false,
+                                            sal::systools::CoInitializeGuard::WhenFailed::NoThrow);
+
+    // assuming we don't need a lock for
+    // a boolean variable like m_bRun...
+    while ( pInst->m_bRunClipboardNotifierThread )
+    {
+        // process window messages because of CoInitializeEx
+        MSG Msg;
+        while (PeekMessageW(&Msg, nullptr, 0, 0, PM_REMOVE))
+            DispatchMessageW(&Msg);
+
+        // wait for clipboard changed or terminate event
+        MsgWaitForMultipleObjects(2, pInst->m_hClipboardChangedNotifierEvents, false, INFINITE,
+                                  QS_ALLINPUT | QS_ALLPOSTMESSAGE);
+
+        std::unique_lock aGuard2( pInst->m_ClipboardChangedEventCountMutex );
+
+        if ( pInst->m_ClipboardChangedEventCount > 0 )
+        {
+            pInst->m_ClipboardChangedEventCount--;
+            if ( 0 == pInst->m_ClipboardChangedEventCount )
+                ResetEvent( pInst->m_hClipboardChangedEvent );
+
+            aGuard2.unlock( );
+
+            // nobody should touch m_pfncClipViewerCallback while we do
+            std::unique_lock aClipViewerGuard( pInst->m_pfncClipViewerCallbackMutex );
+
+            // notify all clipboard listener
+            if ( pInst->m_pfncClipViewerCallback )
+                pInst->m_pfncClipViewerCallback( );
+        }
+        else
+            aGuard2.unlock( );
+    }
+
+    return 0;
+}
+
+bool CMtaOleClipboard::WaitForThreadReady( ) const
+{
+    bool bRet = false;
+
+    if ( nullptr != m_hEvtThrdReady )
+    {
+        DWORD dwResult = WaitForSingleObject(
+            m_hEvtThrdReady, MAX_WAITTIME );
+        bRet = ( dwResult == WAIT_OBJECT_0 );
+    }
+
+    return bRet;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/MtaOleClipb.hxx b/vcl/win/dtrans/MtaOleClipb.hxx
new file mode 100644
index 0000000000..f76becb50c
--- /dev/null
+++ b/vcl/win/dtrans/MtaOleClipb.hxx
@@ -0,0 +1,110 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+#include <mutex>
+
+#include <objidl.h>
+
+// the Mta-Ole clipboard class is for internal use only!
+// only one instance of this class should be created, the
+// user has to ensure this!
+// the class is not thread-safe because it will be used
+// only from within the clipboard service and the methods
+// of the clipboard service are already synchronized
+
+class CMtaOleClipboard
+{
+public:
+    typedef void ( WINAPI *LPFNC_CLIPVIEWER_CALLBACK_t )( void );
+
+public:
+    CMtaOleClipboard( );
+    ~CMtaOleClipboard( );
+
+    // clipboard functions
+    HRESULT setClipboard( IDataObject* pIDataObject );
+    HRESULT getClipboard( IDataObject** ppIDataObject );
+    HRESULT flushClipboard( );
+
+    // register/unregister a clipboard viewer; there can only
+    // be one at a time; parameter NULL means unregister
+    // a clipboard viewer
+    // returns true on success else false; use GetLastError( ) in
+    // false case
+    bool registerClipViewer( LPFNC_CLIPVIEWER_CALLBACK_t pfncClipViewerCallback );
+
+private:
+    unsigned int run( );
+
+    // create a hidden window which serves as a request target; so we
+    // guarantee synchronization
+    void createMtaOleReqWnd( );
+
+    // message support
+    bool     postMessage( UINT msg, WPARAM wParam = 0, LPARAM lParam = 0 );
+    LRESULT  sendMessage( UINT msg, WPARAM wParam = 0, LPARAM lParam = 0 );
+
+    // message handler functions; remember these functions are called
+    // from a different thread context!
+
+    static HRESULT onSetClipboard( IDataObject* pIDataObject );
+    static HRESULT onGetClipboard( LPSTREAM* ppStream );
+    static HRESULT onFlushClipboard( );
+    bool     onRegisterClipViewer( LPFNC_CLIPVIEWER_CALLBACK_t pfncClipViewerCallback );
+
+    // win32 clipboard listener support
+    LRESULT onClipboardUpdate();
+
+    static LRESULT CALLBACK mtaOleReqWndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
+    static unsigned __stdcall oleThreadProc(void* pParam);
+
+    static unsigned __stdcall clipboardChangedNotifierThreadProc(void* pParam);
+
+    bool WaitForThreadReady( ) const;
+
+private:
+    HANDLE                      m_hOleThread;
+    unsigned                    m_uOleThreadId;
+    HANDLE                      m_hEvtThrdReady;
+    HWND                        m_hwndMtaOleReqWnd;
+    HANDLE                      m_hEvtWndDisposed;
+    ATOM                        m_MtaOleReqWndClassAtom;
+    LPFNC_CLIPVIEWER_CALLBACK_t m_pfncClipViewerCallback;
+    bool                        m_bInRegisterClipViewer;
+
+    bool                        m_bRunClipboardNotifierThread;
+    HANDLE                      m_hClipboardChangedNotifierThread;
+    HANDLE                      m_hClipboardChangedNotifierEvents[2];
+    HANDLE&                     m_hClipboardChangedEvent;
+    HANDLE&                     m_hTerminateClipboardChangedNotifierEvent;
+    std::mutex                  m_ClipboardChangedEventCountMutex;
+    sal_Int32                   m_ClipboardChangedEventCount;
+
+    std::mutex                  m_pfncClipViewerCallbackMutex;
+
+    static CMtaOleClipboard*    s_theMtaOleClipboardInst;
+
+    CMtaOleClipboard( const CMtaOleClipboard& ) = delete;
+    CMtaOleClipboard& operator=( const CMtaOleClipboard& ) = delete;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/TxtCnvtHlp.cxx b/vcl/win/dtrans/TxtCnvtHlp.cxx
new file mode 100644
index 0000000000..d7ab386fc1
--- /dev/null
+++ b/vcl/win/dtrans/TxtCnvtHlp.cxx
@@ -0,0 +1,125 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <osl/diagnose.h>
+
+#include "TxtCnvtHlp.hxx"
+#include "DTransHelper.hxx"
+#include "ImplHelper.hxx"
+
+using namespace ::com::sun::star::datatransfer;
+using namespace ::com::sun::star::uno;
+
+// assuming a '\0' terminated string if no length specified
+
+static int CalcBuffSizeForTextConversion( UINT code_page, LPCSTR lpMultiByteString, int nLen = -1 )
+{
+    return ( MultiByteToWideChar( code_page,
+                                0,
+                                lpMultiByteString,
+                                nLen,
+                                nullptr,
+                                0 ) * sizeof( sal_Unicode ) );
+}
+
+// assuming a '\0' terminated string if no length specified
+
+static int CalcBuffSizeForTextConversion( UINT code_page, LPCWSTR lpWideCharString, int nLen = -1 )
+{
+    return WideCharToMultiByte( code_page,
+                                0,
+                                lpWideCharString,
+                                nLen,
+                                nullptr,
+                                0,
+                                nullptr,
+                                nullptr );
+}
+
+// converts text in one code page into unicode text
+// automatically calculates the necessary buffer size and allocates
+// the buffer
+
+int MultiByteToWideCharEx( UINT cp_src,
+                           LPCSTR lpMultiByteString,
+                           int lenStr,
+                           CStgTransferHelper& refDTransHelper,
+                           BOOL bEnsureTrailingZero )
+{
+    OSL_ASSERT( IsValidCodePage( cp_src ) );
+    OSL_ASSERT( nullptr != lpMultiByteString );
+
+    // calculate the required buff size
+    int reqSize = CalcBuffSizeForTextConversion( cp_src, lpMultiByteString, lenStr );
+
+    if ( bEnsureTrailingZero )
+        reqSize += sizeof( sal_Unicode );
+
+    // initialize the data-transfer helper
+    refDTransHelper.init( reqSize );
+
+    // setup a global memory pointer
+    CRawHGlobalPtr ptrHGlob( refDTransHelper );
+
+    // do the conversion and return
+    return MultiByteToWideChar( cp_src,
+                                0,
+                                lpMultiByteString,
+                                lenStr,
+                                static_cast< LPWSTR >( ptrHGlob.GetMemPtr( ) ),
+                                ptrHGlob.MemSize( ) );
+}
+
+// converts unicode text into text of the specified code page
+// automatically calculates the necessary buffer size and allocates
+// the buffer
+
+int WideCharToMultiByteEx( UINT cp_dest,
+                           LPCWSTR lpWideCharString,
+                           int lenStr,
+                           CStgTransferHelper& refDTransHelper,
+                           BOOL bEnsureTrailingZero )
+{
+    OSL_ASSERT( IsValidCodePage( cp_dest ) );
+    OSL_ASSERT( nullptr != lpWideCharString );
+
+    // calculate the required buff size
+    int reqSize = CalcBuffSizeForTextConversion( cp_dest, lpWideCharString, lenStr );
+
+    if ( bEnsureTrailingZero )
+        reqSize += sizeof( sal_Int8 );
+
+    // initialize the data-transfer helper
+    refDTransHelper.init( reqSize );
+
+    // setup a global memory pointer
+    CRawHGlobalPtr ptrHGlob( refDTransHelper );
+
+    // do the conversion and return
+    return WideCharToMultiByte( cp_dest,
+                                0,
+                                lpWideCharString,
+                                lenStr,
+                                static_cast< LPSTR >( ptrHGlob.GetMemPtr( ) ),
+                                ptrHGlob.MemSize( ),
+                                nullptr,
+                                nullptr );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/TxtCnvtHlp.hxx b/vcl/win/dtrans/TxtCnvtHlp.hxx
new file mode 100644
index 0000000000..5294879337
--- /dev/null
+++ b/vcl/win/dtrans/TxtCnvtHlp.hxx
@@ -0,0 +1,41 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <com/sun/star/datatransfer/DataFlavor.hpp>
+
+#include "DTransHelper.hxx"
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+int MultiByteToWideCharEx( UINT cp_src,
+                           LPCSTR lpMultiByteString,
+                           int lenStr,
+                           CStgTransferHelper& refDTransHelper,
+                           BOOL bEnsureTrailingZero = TRUE );
+
+int WideCharToMultiByteEx( UINT cp_dest,
+                           LPCWSTR lpWideCharString,
+                           int lenStr,
+                           CStgTransferHelper& refDTransHelper,
+                           BOOL bEnsureTrailingZero = TRUE );
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/WinClip.hxx b/vcl/win/dtrans/WinClip.hxx
new file mode 100644
index 0000000000..f90d5eea06
--- /dev/null
+++ b/vcl/win/dtrans/WinClip.hxx
@@ -0,0 +1,26 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+
+const sal_Int32 CF_INVALID = 0;
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/WinClipboard.cxx b/vcl/win/dtrans/WinClipboard.cxx
new file mode 100644
index 0000000000..1a8eaea151
--- /dev/null
+++ b/vcl/win/dtrans/WinClipboard.cxx
@@ -0,0 +1,383 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <osl/diagnose.h>
+#include <comphelper/diagnose_ex.hxx>
+#include <com/sun/star/datatransfer/clipboard/ClipboardEvent.hpp>
+#include <com/sun/star/lang/DisposedException.hpp>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <cppuhelper/supportsservice.hxx>
+#include <cppuhelper/weak.hxx>
+#include <vcl/svapp.hxx>
+#include <svdata.hxx>
+#include <salinst.hxx>
+
+#include <com/sun/star/datatransfer/clipboard/RenderingCapabilities.hpp>
+#include "XNotifyingDataObject.hxx"
+
+#include <systools/win32/comtools.hxx>
+#include "DtObjFactory.hxx"
+#include "APNDataObject.hxx"
+#include "DOTransferable.hxx"
+#include "WinClipboard.hxx"
+
+#if !defined WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <ole2.h>
+#include <objidl.h>
+
+using namespace com::sun::star;
+
+namespace
+{
+CWinClipboard* s_pCWinClipbImpl = nullptr;
+osl::Mutex s_aClipboardSingletonMutex;
+}
+
+/*XEventListener,*/
+CWinClipboard::CWinClipboard(const uno::Reference<uno::XComponentContext>& rxContext,
+                             const OUString& aClipboardName)
+    : m_xContext(rxContext)
+    , m_itsName(aClipboardName)
+    , m_pCurrentClipContent(nullptr)
+{
+    // necessary to reassociate from
+    // the static callback function
+    {
+        osl::MutexGuard aGuard(s_aClipboardSingletonMutex);
+        s_pCWinClipbImpl = this;
+    }
+
+    registerClipboardViewer();
+}
+
+CWinClipboard::~CWinClipboard()
+{
+    {
+        osl::MutexGuard aGuard(s_aClipboardSingletonMutex);
+        s_pCWinClipbImpl = nullptr;
+    }
+
+    unregisterClipboardViewer();
+}
+
+void CWinClipboard::disposing(std::unique_lock<std::mutex>& mutex)
+{
+    {
+        osl::MutexGuard aGuard(s_aClipboardSingletonMutex);
+        s_pCWinClipbImpl = nullptr;
+    }
+
+    unregisterClipboardViewer();
+
+    WeakComponentImplHelper::disposing(mutex);
+}
+
+// XClipboard
+
+// to avoid unnecessary traffic we check first if there is a clipboard
+// content which was set via setContent, in this case we don't need
+// to query the content from the clipboard, create a new wrapper object
+// and so on, we simply return the original XTransferable instead of our
+// DOTransferable
+
+uno::Reference<datatransfer::XTransferable> SAL_CALL CWinClipboard::getContents()
+{
+    osl::MutexGuard aGuard(m_aContentMutex);
+
+    if (m_bDisposed)
+        throw lang::DisposedException("object is already disposed",
+                                      static_cast<XClipboardEx*>(this));
+
+    // use the shortcut or create a transferable from
+    // system clipboard
+    {
+        osl::MutexGuard aGuard2(m_aContentCacheMutex);
+
+        if (nullptr != m_pCurrentClipContent)
+            return m_pCurrentClipContent->m_XTransferable;
+
+        // Content cached?
+        if (m_foreignContent.is())
+            return m_foreignContent;
+
+        // release the mutex, so that the variable may be
+        // changed by other threads
+    }
+
+    uno::Reference<datatransfer::XTransferable> rClipContent;
+
+    // get the current format list from clipboard
+    if (UINT nFormats; !GetUpdatedClipboardFormats(nullptr, 0, &nFormats)
+                       && GetLastError() == ERROR_INSUFFICIENT_BUFFER)
+    {
+        std::vector<UINT> aUINTFormats(nFormats);
+        if (GetUpdatedClipboardFormats(aUINTFormats.data(), nFormats, &nFormats))
+        {
+            std::vector<sal_uInt32> aFormats(aUINTFormats.begin(), aUINTFormats.end());
+            rClipContent = new CDOTransferable(m_xContext, this, aFormats);
+
+            osl::MutexGuard aGuard2(m_aContentCacheMutex);
+            m_foreignContent = rClipContent;
+        }
+    }
+
+    return rClipContent;
+}
+
+IDataObjectPtr CWinClipboard::getIDataObject()
+{
+    osl::MutexGuard aGuard(m_aContentMutex);
+
+    if (m_bDisposed)
+        throw lang::DisposedException("object is already disposed",
+                                      static_cast<XClipboardEx*>(this));
+
+    // get the current dataobject from clipboard
+    IDataObjectPtr pIDataObject;
+    HRESULT hr = m_MtaOleClipboard.getClipboard(&pIDataObject);
+
+    if (SUCCEEDED(hr))
+    {
+        // create an apartment neutral dataobject and initialize it with a
+        // com smart pointer to the IDataObject from clipboard
+        pIDataObject = new CAPNDataObject(pIDataObject);
+    }
+
+    return pIDataObject;
+}
+
+void SAL_CALL CWinClipboard::setContents(
+    const uno::Reference<datatransfer::XTransferable>& xTransferable,
+    const uno::Reference<datatransfer::clipboard::XClipboardOwner>& xClipboardOwner)
+{
+    osl::MutexGuard aGuard(m_aContentMutex);
+
+    if (m_bDisposed)
+        throw lang::DisposedException("object is already disposed",
+                                      static_cast<XClipboardEx*>(this));
+
+    IDataObjectPtr pIDataObj;
+
+    if (xTransferable.is())
+    {
+        {
+            osl::MutexGuard aGuard2(m_aContentCacheMutex);
+
+            m_foreignContent.clear();
+
+            m_pCurrentClipContent = new CXNotifyingDataObject(
+                CDTransObjFactory::createDataObjFromTransferable(m_xContext, xTransferable),
+                xTransferable, xClipboardOwner, this);
+        }
+
+        pIDataObj = IDataObjectPtr(m_pCurrentClipContent);
+    }
+
+    m_MtaOleClipboard.setClipboard(pIDataObj.get());
+}
+
+OUString SAL_CALL CWinClipboard::getName()
+{
+    if (m_bDisposed)
+        throw lang::DisposedException("object is already disposed",
+                                      static_cast<XClipboardEx*>(this));
+
+    return m_itsName;
+}
+
+// XFlushableClipboard
+
+void SAL_CALL CWinClipboard::flushClipboard()
+{
+    osl::MutexGuard aGuard(m_aContentMutex);
+
+    if (m_bDisposed)
+        throw lang::DisposedException("object is already disposed",
+                                      static_cast<XClipboardEx*>(this));
+
+    // actually it should be ClearableMutexGuard aGuard( m_aContentCacheMutex );
+    // but it does not work since FlushClipboard does a callback and frees DataObject
+    // which results in a deadlock in onReleaseDataObject.
+    // FlushClipboard had to be synchron in order to prevent shutdown until all
+    // clipboard-formats are rendered.
+    // The request is needed to prevent flushing if we are not clipboard owner (it is
+    // not known what happens if we flush but aren't clipboard owner).
+    // It may be possible to move the request to the clipboard STA thread by saving the
+    // DataObject and call OleIsCurrentClipboard before flushing.
+
+    if (nullptr != m_pCurrentClipContent)
+        m_MtaOleClipboard.flushClipboard();
+}
+
+// XClipboardEx
+
+sal_Int8 SAL_CALL CWinClipboard::getRenderingCapabilities()
+{
+    if (m_bDisposed)
+        throw lang::DisposedException("object is already disposed",
+                                      static_cast<XClipboardEx*>(this));
+
+    using namespace datatransfer::clipboard::RenderingCapabilities;
+    return (Delayed | Persistent);
+}
+
+// XClipboardNotifier
+
+void SAL_CALL CWinClipboard::addClipboardListener(
+    const uno::Reference<datatransfer::clipboard::XClipboardListener>& listener)
+{
+    if (m_bDisposed)
+        throw lang::DisposedException("object is already disposed",
+                                      static_cast<XClipboardEx*>(this));
+
+    // check input parameter
+    if (!listener.is())
+        throw lang::IllegalArgumentException("empty reference", static_cast<XClipboardEx*>(this),
+                                             1);
+
+    std::unique_lock aGuard(m_aMutex);
+    maClipboardListeners.addInterface(aGuard, listener);
+}
+
+void SAL_CALL CWinClipboard::removeClipboardListener(
+    const uno::Reference<datatransfer::clipboard::XClipboardListener>& listener)
+{
+    if (m_bDisposed)
+        throw lang::DisposedException("object is already disposed",
+                                      static_cast<XClipboardEx*>(this));
+
+    // check input parameter
+    if (!listener.is())
+        throw lang::IllegalArgumentException("empty reference", static_cast<XClipboardEx*>(this),
+                                             1);
+
+    std::unique_lock aGuard(m_aMutex);
+    maClipboardListeners.removeInterface(aGuard, listener);
+}
+
+void CWinClipboard::notifyAllClipboardListener()
+{
+    if (m_bDisposed)
+        return;
+
+    std::unique_lock aGuard(m_aMutex);
+    if (m_bDisposed)
+        return;
+
+    if (!maClipboardListeners.getLength(aGuard))
+        return;
+
+    try
+    {
+        uno::Reference<datatransfer::XTransferable> rXTransf(getContents());
+        datatransfer::clipboard::ClipboardEvent aClipbEvent(static_cast<XClipboard*>(this),
+                                                            rXTransf);
+        maClipboardListeners.notifyEach(
+            aGuard, &datatransfer::clipboard::XClipboardListener::changedContents, aClipbEvent);
+    }
+    catch (const lang::DisposedException&)
+    {
+        OSL_FAIL("Service Manager disposed");
+
+        aGuard.unlock();
+        // no further clipboard changed notifications
+        unregisterClipboardViewer();
+    }
+}
+
+// XServiceInfo
+
+OUString SAL_CALL CWinClipboard::getImplementationName()
+{
+    return "com.sun.star.datatransfer.clipboard.ClipboardW32";
+}
+
+sal_Bool SAL_CALL CWinClipboard::supportsService(const OUString& ServiceName)
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+uno::Sequence<OUString> SAL_CALL CWinClipboard::getSupportedServiceNames()
+{
+    return { "com.sun.star.datatransfer.clipboard.SystemClipboard" };
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+dtrans_CWinClipboard_get_implementation(css::uno::XComponentContext* context,
+                                        css::uno::Sequence<css::uno::Any> const& args)
+{
+    // We run unit tests in parallel, which is a problem when touching a shared resource
+    // like the system clipboard, so rather use the dummy GenericClipboard.
+    static const bool bRunningUnitTest = getenv("LO_TESTNAME");
+
+    if (bRunningUnitTest)
+    {
+        SolarMutexGuard aGuard;
+        auto xClipboard = ImplGetSVData()->mpDefInst->CreateClipboard(args);
+        if (xClipboard.is())
+            xClipboard->acquire();
+        return xClipboard.get();
+    }
+    else
+    {
+        return cppu::acquire(new CWinClipboard(context, ""));
+    }
+}
+
+void CWinClipboard::onReleaseDataObject(CXNotifyingDataObject* theCaller)
+{
+    OSL_ASSERT(nullptr != theCaller);
+
+    if (theCaller)
+        theCaller->lostOwnership();
+
+    // if the current caller is the one we currently hold, then set it to NULL
+    // because an external source must be the clipboardowner now
+    osl::MutexGuard aGuard(m_aContentCacheMutex);
+
+    if (m_pCurrentClipContent == theCaller)
+        m_pCurrentClipContent = nullptr;
+}
+
+void CWinClipboard::registerClipboardViewer()
+{
+    m_MtaOleClipboard.registerClipViewer(CWinClipboard::onClipboardContentChanged);
+}
+
+void CWinClipboard::unregisterClipboardViewer() { m_MtaOleClipboard.registerClipViewer(nullptr); }
+
+void WINAPI CWinClipboard::onClipboardContentChanged()
+{
+    osl::MutexGuard aGuard(s_aClipboardSingletonMutex);
+
+    // reassociation to instance through static member
+    if (nullptr != s_pCWinClipbImpl)
+    {
+        s_pCWinClipbImpl->m_foreignContent.clear();
+        s_pCWinClipbImpl->notifyAllClipboardListener();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/WinClipboard.hxx b/vcl/win/dtrans/WinClipboard.hxx
new file mode 100644
index 0000000000..fbaa1b2062
--- /dev/null
+++ b/vcl/win/dtrans/WinClipboard.hxx
@@ -0,0 +1,112 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+#include <comphelper/compbase.hxx>
+#include <comphelper/interfacecontainer4.hxx>
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardEx.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardOwner.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardListener.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardNotifier.hpp>
+#include <com/sun/star/datatransfer/clipboard/XSystemClipboard.hpp>
+#include <com/sun/star/datatransfer/clipboard/XFlushableClipboard.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <osl/conditn.hxx>
+#include <systools/win32/comtools.hxx>
+
+#include "MtaOleClipb.hxx"
+#include "XNotifyingDataObject.hxx"
+
+// implements the XClipboard[Ex] ... interfaces
+// for the clipboard viewer mechanism we need a static callback function
+// and a static member to reassociate from this static function to the
+// class instance
+// watch out: we are using only one static member variable and not a list
+// because we assume to be instantiated only once
+// this will be assured by a OneInstanceFactory of the service and not
+// by this class!
+
+class CWinClipboard final
+    : public comphelper::WeakComponentImplHelper<css::datatransfer::clipboard::XSystemClipboard,
+                                                 css::datatransfer::clipboard::XFlushableClipboard,
+                                                 css::lang::XServiceInfo>
+{
+    friend STDMETHODIMP_(ULONG) CXNotifyingDataObject::Release();
+
+    css::uno::Reference<css::uno::XComponentContext> m_xContext;
+    const OUString m_itsName;
+    CMtaOleClipboard m_MtaOleClipboard;
+    CXNotifyingDataObject* m_pCurrentClipContent;
+    com::sun::star::uno::Reference<com::sun::star::datatransfer::XTransferable> m_foreignContent;
+    osl::Mutex m_aContentMutex;
+    osl::Mutex m_aContentCacheMutex;
+    comphelper::OInterfaceContainerHelper4<css::datatransfer::clipboard::XClipboardListener>
+        maClipboardListeners;
+
+    void notifyAllClipboardListener();
+    void onReleaseDataObject(CXNotifyingDataObject* theCaller);
+
+    void registerClipboardViewer();
+    void unregisterClipboardViewer();
+
+    static void WINAPI onClipboardContentChanged();
+
+public:
+    CWinClipboard(const css::uno::Reference<css::uno::XComponentContext>& rxContext,
+                  const OUString& aClipboardName);
+    virtual ~CWinClipboard() override;
+
+    // XClipboard
+    virtual css::uno::Reference<css::datatransfer::XTransferable> SAL_CALL getContents() override;
+    virtual void SAL_CALL setContents(
+        const css::uno::Reference<css::datatransfer::XTransferable>& xTransferable,
+        const css::uno::Reference<css::datatransfer::clipboard::XClipboardOwner>& xClipboardOwner)
+        override;
+    virtual OUString SAL_CALL getName() override;
+
+    // XFlushableClipboard
+    virtual void SAL_CALL flushClipboard() override;
+
+    // XClipboardEx
+    virtual sal_Int8 SAL_CALL getRenderingCapabilities() override;
+
+    // XClipboardNotifier
+    virtual void SAL_CALL addClipboardListener(
+        const css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>& listener)
+        override;
+    virtual void SAL_CALL removeClipboardListener(
+        const css::uno::Reference<css::datatransfer::clipboard::XClipboardListener>& listener)
+        override;
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
+    virtual css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
+
+    IDataObjectPtr getIDataObject();
+
+    virtual void disposing(std::unique_lock<std::mutex>&) override;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/XNotifyingDataObject.cxx b/vcl/win/dtrans/XNotifyingDataObject.cxx
new file mode 100644
index 0000000000..aab168f043
--- /dev/null
+++ b/vcl/win/dtrans/XNotifyingDataObject.cxx
@@ -0,0 +1,149 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <osl/diagnose.h>
+#include <comphelper/diagnose_ex.hxx>
+#include "XNotifyingDataObject.hxx"
+#include "WinClipboard.hxx"
+
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::datatransfer::clipboard;
+using com::sun::star::uno::RuntimeException;
+using com::sun::star::uno::Reference;
+
+CXNotifyingDataObject::CXNotifyingDataObject(
+    const IDataObjectPtr& aIDataObject,
+    const Reference< XTransferable >& aXTransferable,
+    const Reference< XClipboardOwner >& aXClipOwner,
+    CWinClipboard* const theWinClipoard) :
+    m_nRefCnt( 0 ),
+    m_aIDataObject( aIDataObject ),
+    m_XTransferable( aXTransferable ),
+    m_XClipboardOwner( aXClipOwner ),
+    m_pWinClipImpl( theWinClipoard )
+{
+}
+
+STDMETHODIMP CXNotifyingDataObject::QueryInterface( REFIID iid, void** ppvObject )
+{
+    if ( nullptr == ppvObject )
+        return E_INVALIDARG;
+
+    HRESULT hr = E_NOINTERFACE;
+
+    *ppvObject = nullptr;
+    if ( ( __uuidof( IUnknown ) == iid ) ||
+         ( __uuidof( IDataObject ) == iid ) )
+    {
+        *ppvObject = static_cast< IUnknown* >( this );
+        static_cast<LPUNKNOWN>(*ppvObject)->AddRef( );
+        hr = S_OK;
+    }
+
+    return hr;
+}
+
+STDMETHODIMP_(ULONG) CXNotifyingDataObject::AddRef( )
+{
+    return static_cast< ULONG >( InterlockedIncrement( &m_nRefCnt ) );
+}
+
+STDMETHODIMP_(ULONG) CXNotifyingDataObject::Release( )
+{
+    ULONG nRefCnt =
+        static_cast< ULONG >( InterlockedDecrement( &m_nRefCnt ) );
+
+    if ( 0 == nRefCnt )
+    {
+        if ( m_pWinClipImpl )
+            m_pWinClipImpl->onReleaseDataObject( this );
+
+        delete this;
+    }
+
+    return nRefCnt;
+}
+
+STDMETHODIMP CXNotifyingDataObject::GetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium )
+{
+    return m_aIDataObject->GetData(pFormatetc, pmedium);
+}
+
+STDMETHODIMP CXNotifyingDataObject::EnumFormatEtc(
+    DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc )
+{
+    return m_aIDataObject->EnumFormatEtc(dwDirection, ppenumFormatetc);
+}
+
+STDMETHODIMP CXNotifyingDataObject::QueryGetData( FORMATETC * pFormatetc )
+{
+    return m_aIDataObject->QueryGetData(pFormatetc);
+}
+
+STDMETHODIMP CXNotifyingDataObject::GetDataHere( FORMATETC * lpFetc, STGMEDIUM * lpStgMedium )
+{
+    return m_aIDataObject->GetDataHere(lpFetc, lpStgMedium);
+}
+
+STDMETHODIMP CXNotifyingDataObject::GetCanonicalFormatEtc( FORMATETC * lpFetc, FORMATETC * lpCanonicalFetc )
+{
+    return m_aIDataObject->GetCanonicalFormatEtc(lpFetc, lpCanonicalFetc);
+}
+
+STDMETHODIMP CXNotifyingDataObject::SetData( FORMATETC * lpFetc, STGMEDIUM * lpStgMedium, BOOL bRelease )
+{
+    return m_aIDataObject->SetData( lpFetc, lpStgMedium, bRelease );
+}
+
+STDMETHODIMP CXNotifyingDataObject::DAdvise(
+    FORMATETC * lpFetc, DWORD advf, IAdviseSink * lpAdvSink, DWORD* pdwConnection )
+{
+    return m_aIDataObject->DAdvise( lpFetc, advf, lpAdvSink, pdwConnection );
+}
+
+STDMETHODIMP CXNotifyingDataObject::DUnadvise( DWORD dwConnection )
+{
+    return m_aIDataObject->DUnadvise( dwConnection );
+}
+
+STDMETHODIMP CXNotifyingDataObject::EnumDAdvise( IEnumSTATDATA ** ppenumAdvise )
+{
+    return m_aIDataObject->EnumDAdvise( ppenumAdvise );
+}
+
+CXNotifyingDataObject::operator IDataObject*( )
+{
+    return static_cast< IDataObject* >( this );
+}
+
+void CXNotifyingDataObject::lostOwnership( )
+{
+    try
+    {
+        if (m_XClipboardOwner.is())
+            m_XClipboardOwner->lostOwnership(
+                static_cast<XClipboardEx*>(m_pWinClipImpl), m_XTransferable);
+    }
+    catch(RuntimeException&)
+    {
+        TOOLS_WARN_EXCEPTION( "vcl",  "" );
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/XNotifyingDataObject.hxx b/vcl/win/dtrans/XNotifyingDataObject.hxx
new file mode 100644
index 0000000000..408413a5de
--- /dev/null
+++ b/vcl/win/dtrans/XNotifyingDataObject.hxx
@@ -0,0 +1,84 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardOwner.hpp>
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <objidl.h>
+
+#include <systools/win32/comtools.hxx>
+
+/*--------------------------------------------------------------------------
+    To implement the lostOwnership mechanism cleanly we need this wrapper
+    object
+----------------------------------------------------------------------------*/
+
+// forward
+class CWinClipboard;
+
+class CXNotifyingDataObject final : public IDataObject
+{
+public:
+    CXNotifyingDataObject(
+        const IDataObjectPtr& aIDataObject,
+        const css::uno::Reference< css::datatransfer::XTransferable >& aXTransferable,
+        const css::uno::Reference< css::datatransfer::clipboard::XClipboardOwner >& aXClipOwner,
+        CWinClipboard* const theWinClipoard);
+
+    virtual ~CXNotifyingDataObject() {}
+
+    // ole interface implementation
+
+    //IUnknown interface methods
+    STDMETHODIMP           QueryInterface(REFIID iid, void** ppvObject) override;
+    STDMETHODIMP_( ULONG ) AddRef( ) override;
+    STDMETHODIMP_( ULONG ) Release( ) override;
+
+    // IDataObject interface methods
+    STDMETHODIMP GetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) override;
+    STDMETHODIMP GetDataHere( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) override;
+    STDMETHODIMP QueryGetData( FORMATETC * pFormatetc ) override;
+    STDMETHODIMP GetCanonicalFormatEtc( FORMATETC * pFormatectIn, FORMATETC * pFormatetcOut ) override;
+    STDMETHODIMP SetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium, BOOL fRelease ) override;
+    STDMETHODIMP EnumFormatEtc( DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc ) override;
+    STDMETHODIMP DAdvise( FORMATETC * pFormatetc, DWORD advf, IAdviseSink * pAdvSink, DWORD* pdwConnection ) override;
+    STDMETHODIMP DUnadvise( DWORD dwConnection ) override;
+    STDMETHODIMP EnumDAdvise( IEnumSTATDATA** ppenumAdvise ) override;
+
+    operator IDataObject*( );
+
+private:
+    void lostOwnership( );
+
+    sal_Int32                                                                     m_nRefCnt;
+    IDataObjectPtr                                                                m_aIDataObject;
+    const css::uno::Reference< css::datatransfer::XTransferable >                 m_XTransferable;
+    const css::uno::Reference< css::datatransfer::clipboard::XClipboardOwner >    m_XClipboardOwner;
+    CWinClipboard* const m_pWinClipImpl;
+
+    friend class CWinClipboard;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/XTDataObject.cxx b/vcl/win/dtrans/XTDataObject.cxx
new file mode 100644
index 0000000000..b3f5ccb303
--- /dev/null
+++ b/vcl/win/dtrans/XTDataObject.cxx
@@ -0,0 +1,751 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <osl/diagnose.h>
+#include <o3tl/char16_t2wchar_t.hxx>
+#include <o3tl/safeint.hxx>
+
+#include "XTDataObject.hxx"
+#include <com/sun/star/datatransfer/DataFlavor.hpp>
+#include "ImplHelper.hxx"
+#include "DTransHelper.hxx"
+#include "TxtCnvtHlp.hxx"
+#include <com/sun/star/datatransfer/UnsupportedFlavorException.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardEx.hpp>
+#include <com/sun/star/awt/AsyncCallback.hpp>
+#include <com/sun/star/awt/XCallback.hpp>
+#include "FmtFilter.hxx"
+#include <cppuhelper/implbase.hxx>
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <shlobj.h>
+
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::datatransfer::clipboard;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::lang;
+
+namespace {
+
+void setupStgMedium( const FORMATETC& fetc,
+                                             CStgTransferHelper& stgTransHlp,
+                                             STGMEDIUM& stgmedium )
+{
+    stgmedium.pUnkForRelease = nullptr;
+
+    if ( fetc.cfFormat == CF_METAFILEPICT )
+    {
+        stgmedium.tymed         = TYMED_MFPICT;
+        stgmedium.hMetaFilePict = static_cast< HMETAFILEPICT >( stgTransHlp.getHGlobal( ) );
+    }
+    else if ( fetc.cfFormat == CF_ENHMETAFILE )
+    {
+        stgmedium.tymed        = TYMED_ENHMF;
+        stgmedium.hEnhMetaFile = static_cast< HENHMETAFILE >( stgTransHlp.getHGlobal( ) );
+    }
+    else if ( fetc.tymed & TYMED_HGLOBAL )
+    {
+        stgmedium.tymed   = TYMED_HGLOBAL;
+        stgmedium.hGlobal = stgTransHlp.getHGlobal( );
+    }
+    else if ( fetc.tymed & TYMED_ISTREAM )
+    {
+        stgmedium.tymed = TYMED_ISTREAM;
+        stgTransHlp.getIStream( &stgmedium.pstm );
+    }
+    else
+        OSL_ASSERT( false );
+}
+
+/**
+   We need to destroy XTransferable in the main thread to avoid dead lock
+   when locking in the clipboard thread. So we transfer the ownership of the
+   XTransferable reference to this object and release it when the callback
+   is executed in main thread.
+*/
+class AsyncDereference : public cppu::WeakImplHelper<css::awt::XCallback>
+{
+    Reference<XTransferable> maTransferable;
+
+public:
+    AsyncDereference(css::uno::Reference<css::datatransfer::XTransferable> const & rTransferable)
+        : maTransferable(rTransferable)
+    {}
+
+    virtual void SAL_CALL notify(css::uno::Any const &) override
+    {
+        maTransferable.clear();
+    }
+};
+
+// a helper class that will be thrown by the function validateFormatEtc
+
+class CInvalidFormatEtcException
+{
+public:
+    HRESULT m_hr;
+    explicit CInvalidFormatEtcException( HRESULT hr ) : m_hr( hr ) {};
+};
+
+void validateFormatEtc( LPFORMATETC lpFormatEtc )
+{
+    OSL_ASSERT( lpFormatEtc );
+
+    if ( lpFormatEtc->lindex != -1 )
+        throw CInvalidFormatEtcException( DV_E_LINDEX );
+
+    if ( !(lpFormatEtc->dwAspect & DVASPECT_CONTENT) &&
+         !(lpFormatEtc->dwAspect & DVASPECT_SHORTNAME) )
+        throw CInvalidFormatEtcException( DV_E_DVASPECT );
+
+    if ( !(lpFormatEtc->tymed & TYMED_HGLOBAL) &&
+         !(lpFormatEtc->tymed & TYMED_ISTREAM) &&
+         !(lpFormatEtc->tymed & TYMED_MFPICT) &&
+         !(lpFormatEtc->tymed & TYMED_ENHMF) )
+        throw CInvalidFormatEtcException( DV_E_TYMED );
+
+    if ( lpFormatEtc->cfFormat == CF_METAFILEPICT &&
+         !(lpFormatEtc->tymed & TYMED_MFPICT) )
+        throw CInvalidFormatEtcException( DV_E_TYMED );
+
+    if ( lpFormatEtc->cfFormat == CF_ENHMETAFILE &&
+         !(lpFormatEtc->tymed & TYMED_ENHMF) )
+        throw CInvalidFormatEtcException( DV_E_TYMED );
+}
+
+void invalidateStgMedium( STGMEDIUM& stgmedium )
+{
+    stgmedium.tymed = TYMED_NULL;
+}
+
+HRESULT translateStgExceptionCode( HRESULT hr )
+{
+    HRESULT hrTransl;
+
+    switch( hr )
+    {
+    case STG_E_MEDIUMFULL:
+        hrTransl = hr;
+        break;
+
+    default:
+        hrTransl = E_UNEXPECTED;
+        break;
+    }
+
+    return hrTransl;
+}
+
+// inline
+void renderDataAndSetupStgMedium(
+    const sal_Int8* lpStorage, const FORMATETC& fetc, sal_uInt32 nInitStgSize,
+    sal_uInt32 nBytesToTransfer, STGMEDIUM& stgmedium )
+{
+    OSL_PRECOND( !nInitStgSize || (nInitStgSize >= nBytesToTransfer),
+                 "Memory size less than number of bytes to transfer" );
+
+    CStgTransferHelper stgTransfHelper( AUTO_INIT );
+
+    // setup storage size
+    if ( nInitStgSize > 0 )
+        stgTransfHelper.init( nInitStgSize );
+
+#if OSL_DEBUG_LEVEL > 0
+    sal_uInt32 nBytesWritten = 0;
+    stgTransfHelper.write( lpStorage, nBytesToTransfer, &nBytesWritten );
+    OSL_ASSERT( nBytesWritten == nBytesToTransfer );
+#else
+    stgTransfHelper.write( lpStorage, nBytesToTransfer );
+#endif
+
+    setupStgMedium( fetc, stgTransfHelper, stgmedium );
+}
+
+}
+
+CXTDataObject::CXTDataObject( const Reference< XComponentContext >& rxContext,
+                              const Reference< XTransferable >& aXTransferable )
+    : m_nRefCnt( 0 )
+    , m_XTransferable( aXTransferable )
+    , m_XComponentContext( rxContext )
+    , m_bFormatEtcContainerInitialized( false )
+    , m_DataFormatTranslator( rxContext )
+    , m_FormatRegistrar( rxContext, m_DataFormatTranslator )
+{
+}
+
+CXTDataObject::~CXTDataObject()
+{
+    css::awt::AsyncCallback::create(m_XComponentContext)->addCallback(
+        new AsyncDereference(m_XTransferable),
+        css::uno::Any());
+}
+
+// IUnknown->QueryInterface
+
+STDMETHODIMP CXTDataObject::QueryInterface( REFIID iid, void** ppvObject )
+{
+    if ( nullptr == ppvObject )
+        return E_INVALIDARG;
+
+    HRESULT hr = E_NOINTERFACE;
+
+    *ppvObject = nullptr;
+    if ( ( __uuidof( IUnknown ) == iid ) ||
+         ( __uuidof( IDataObject ) == iid ) )
+    {
+        *ppvObject = static_cast< IUnknown* >( this );
+        static_cast<LPUNKNOWN>(*ppvObject)->AddRef( );
+        hr = S_OK;
+    }
+
+    return hr;
+}
+
+// IUnknown->AddRef
+
+STDMETHODIMP_(ULONG) CXTDataObject::AddRef( )
+{
+    return static_cast< ULONG >( InterlockedIncrement( &m_nRefCnt ) );
+}
+
+// IUnknown->Release
+
+STDMETHODIMP_(ULONG) CXTDataObject::Release( )
+{
+    ULONG nRefCnt =
+        static_cast< ULONG >( InterlockedDecrement( &m_nRefCnt ) );
+
+    if ( 0 == nRefCnt )
+        delete this;
+
+    return nRefCnt;
+}
+
+STDMETHODIMP CXTDataObject::GetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium )
+{
+    if ( !(pFormatetc && pmedium) )
+        return E_INVALIDARG;
+
+    try
+    {
+        // prepare data transfer
+        invalidateStgMedium( *pmedium );
+        validateFormatEtc( pFormatetc );
+
+        // handle locale request, because locale is an artificial format for us
+        if ( CF_LOCALE == pFormatetc->cfFormat )
+            renderLocaleAndSetupStgMedium( *pFormatetc, *pmedium );
+        else if ( CF_UNICODETEXT == pFormatetc->cfFormat )
+            renderUnicodeAndSetupStgMedium( *pFormatetc, *pmedium );
+        else
+            renderAnyDataAndSetupStgMedium( *pFormatetc, *pmedium );
+    }
+    catch(UnsupportedFlavorException&)
+    {
+        HRESULT hr = DV_E_FORMATETC;
+
+        CFormatEtc aFormatetc(*pFormatetc);
+        if (CFormatRegistrar::isSynthesizeableFormat(aFormatetc))
+            hr = renderSynthesizedFormatAndSetupStgMedium( *pFormatetc, *pmedium );
+
+        return hr;
+    }
+    catch( CInvalidFormatEtcException& ex )
+    {
+        return ex.m_hr;
+    }
+    catch( CStgTransferHelper::CStgTransferException& ex )
+    {
+        return translateStgExceptionCode( ex.m_hr );
+    }
+    catch(...)
+    {
+        return E_UNEXPECTED;
+    }
+
+    return S_OK;
+}
+
+//inline
+void CXTDataObject::renderLocaleAndSetupStgMedium(
+    FORMATETC const & fetc, STGMEDIUM& stgmedium )
+{
+    if ( !m_FormatRegistrar.hasSynthesizedLocale( ) )
+        throw CInvalidFormatEtcException( DV_E_FORMATETC );
+    LCID lcid = CFormatRegistrar::getSynthesizedLocale( );
+    renderDataAndSetupStgMedium(
+        reinterpret_cast< sal_Int8* >( &lcid ),
+        fetc,
+        0,
+        sizeof( LCID ),
+        stgmedium );
+}
+
+void CXTDataObject::renderUnicodeAndSetupStgMedium(
+    FORMATETC const & fetc, STGMEDIUM& stgmedium )
+{
+    DataFlavor aFlavor = formatEtcToDataFlavor( fetc );
+
+    Any aAny = m_XTransferable->getTransferData( aFlavor );
+
+    // unfortunately not all transferables fulfill the
+    // spec. and do throw an UnsupportedFlavorException
+    // so we must check the any
+    if ( !aAny.hasValue( ) )
+    {
+        OSL_FAIL( "XTransferable should throw an exception if ask for an unsupported flavor" );
+        throw UnsupportedFlavorException( );
+    }
+
+    OUString aText;
+    aAny >>= aText;
+
+    sal_uInt32 nBytesToTransfer = aText.getLength( ) * sizeof( sal_Unicode );
+
+    // to be sure there is an ending 0
+    sal_uInt32 nRequiredMemSize = nBytesToTransfer + sizeof( sal_Unicode );
+
+    renderDataAndSetupStgMedium(
+        reinterpret_cast< const sal_Int8* >( aText.getStr( ) ),
+        fetc,
+        nRequiredMemSize,
+        nBytesToTransfer,
+        stgmedium );
+}
+
+void CXTDataObject::renderAnyDataAndSetupStgMedium(
+    FORMATETC& fetc, STGMEDIUM& stgmedium )
+{
+    DataFlavor aFlavor = formatEtcToDataFlavor( fetc );
+
+    Any aAny = m_XTransferable->getTransferData( aFlavor );
+
+    // unfortunately not all transferables fulfill the
+    // spec. and do throw an UnsupportedFlavorException
+    // so we must check the any
+    if ( !aAny.hasValue( ) )
+    {
+        OSL_FAIL( "XTransferable should throw an exception if ask for an unsupported flavor" );
+        throw UnsupportedFlavorException( );
+    }
+
+    Sequence< sal_Int8 > clipDataStream;
+    aAny >>= clipDataStream;
+
+    sal_uInt32 nRequiredMemSize = 0;
+    if ( CDataFormatTranslator::isOemOrAnsiTextFormat( fetc.cfFormat ) )
+        nRequiredMemSize = sizeof( sal_Int8 ) * clipDataStream.getLength( ) + 1;
+
+    // prepare data for transmission
+    // #i124085# DIBV5 should not happen for now, but keep as hint here
+    if ( CF_DIBV5 == fetc.cfFormat || CF_DIB == fetc.cfFormat )
+    {
+#ifdef DBG_UTIL
+        if(CF_DIBV5 == fetc.cfFormat)
+        {
+            OSL_ENSURE(o3tl::make_unsigned(clipDataStream.getLength()) > (sizeof(BITMAPFILEHEADER) + sizeof(BITMAPV5HEADER)), "Wrong size on CF_DIBV5 data (!)");
+        }
+        else // CF_DIB == fetc.cfFormat
+        {
+            OSL_ENSURE(o3tl::make_unsigned(clipDataStream.getLength()) > (sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER)), "Wrong size on CF_DIB data (!)");
+        }
+#endif
+
+        // remove BITMAPFILEHEADER
+        clipDataStream = OOBmpToWinDIB( clipDataStream );
+    }
+
+    if ( CF_METAFILEPICT == fetc.cfFormat )
+    {
+        stgmedium.tymed          = TYMED_MFPICT;
+        stgmedium.hMetaFilePict  = OOMFPictToWinMFPict( clipDataStream );
+        stgmedium.pUnkForRelease = nullptr;
+    }
+    else if( CF_ENHMETAFILE == fetc.cfFormat )
+    {
+        stgmedium.tymed          = TYMED_ENHMF;
+        stgmedium.hMetaFilePict  = OOMFPictToWinENHMFPict( clipDataStream );
+        stgmedium.pUnkForRelease = nullptr;
+    }
+    else
+        renderDataAndSetupStgMedium(
+            clipDataStream.getArray( ),
+            fetc,
+            nRequiredMemSize,
+            clipDataStream.getLength( ),
+            stgmedium );
+}
+
+HRESULT CXTDataObject::renderSynthesizedFormatAndSetupStgMedium( FORMATETC& fetc, STGMEDIUM& stgmedium )
+{
+    HRESULT hr = S_OK;
+
+    try
+    {
+        if ( CF_UNICODETEXT == fetc.cfFormat )
+            // the transferable seems to have only text
+            renderSynthesizedUnicodeAndSetupStgMedium( fetc, stgmedium );
+        else if ( CDataFormatTranslator::isOemOrAnsiTextFormat( fetc.cfFormat ) )
+            // the transferable seems to have only unicode text
+            renderSynthesizedTextAndSetupStgMedium( fetc, stgmedium );
+        else
+            // the transferable seems to have only text/html
+            renderSynthesizedHtmlAndSetupStgMedium( fetc, stgmedium );
+    }
+    catch(UnsupportedFlavorException&)
+    {
+        hr = DV_E_FORMATETC;
+    }
+    catch( CInvalidFormatEtcException& )
+    {
+        OSL_FAIL( "Unexpected exception" );
+    }
+    catch( CStgTransferHelper::CStgTransferException& ex )
+    {
+        return translateStgExceptionCode( ex.m_hr );
+    }
+    catch(...)
+    {
+        hr = E_UNEXPECTED;
+    }
+
+    return hr;
+}
+
+// the transferable must have only text, so we will synthesize unicode text
+
+void CXTDataObject::renderSynthesizedUnicodeAndSetupStgMedium( FORMATETC const & fetc, STGMEDIUM& stgmedium )
+{
+    OSL_ASSERT( CF_UNICODETEXT == fetc.cfFormat );
+
+    Any aAny = m_XTransferable->getTransferData( m_FormatRegistrar.getRegisteredTextFlavor( ) );
+
+    // unfortunately not all transferables fulfill the
+    // spec. and do throw an UnsupportedFlavorException
+    // so we must check the any
+    if ( !aAny.hasValue( ) )
+    {
+        OSL_FAIL( "XTransferable should throw an exception if ask for an unsupported flavor" );
+        throw UnsupportedFlavorException( );
+    }
+
+    Sequence< sal_Int8 > aText;
+    aAny >>= aText;
+
+    CStgTransferHelper stgTransfHelper;
+
+    MultiByteToWideCharEx(
+        CFormatRegistrar::getRegisteredTextCodePage( ),
+        reinterpret_cast< char* >( aText.getArray( ) ),
+        aText.getLength( ),
+        stgTransfHelper );
+
+    setupStgMedium( fetc, stgTransfHelper, stgmedium );
+}
+
+// the transferable must have only unicode text so we will synthesize text
+
+void CXTDataObject::renderSynthesizedTextAndSetupStgMedium( FORMATETC& fetc, STGMEDIUM& stgmedium )
+{
+    OSL_ASSERT( CDataFormatTranslator::isOemOrAnsiTextFormat( fetc.cfFormat ) );
+
+    DataFlavor aFlavor = formatEtcToDataFlavor(
+        CDataFormatTranslator::getFormatEtcForClipformat( CF_UNICODETEXT ) );
+
+    Any aAny = m_XTransferable->getTransferData( aFlavor );
+
+    // unfortunately not all transferables fulfill the
+    // spec. and do throw an UnsupportedFlavorException
+    // so we must check the any
+    if ( !aAny.hasValue( ) )
+    {
+        OSL_FAIL( "XTransferable should throw an exception if ask for an unsupported flavor" );
+        throw UnsupportedFlavorException( );
+    }
+
+    OUString aUnicodeText;
+    aAny >>= aUnicodeText;
+
+    CStgTransferHelper stgTransfHelper;
+
+    WideCharToMultiByteEx(
+        GetACP( ),
+        o3tl::toW( aUnicodeText.getStr( ) ),
+        aUnicodeText.getLength( ),
+        stgTransfHelper );
+
+    setupStgMedium( fetc, stgTransfHelper, stgmedium );
+}
+
+void CXTDataObject::renderSynthesizedHtmlAndSetupStgMedium( FORMATETC& fetc, STGMEDIUM& stgmedium )
+{
+    OSL_ASSERT( CDataFormatTranslator::isHTMLFormat( fetc.cfFormat ) );
+
+    DataFlavor aFlavor;
+
+    // creating a DataFlavor on the fly
+    aFlavor.MimeType = "text/html";
+    aFlavor.DataType = cppu::UnoType<Sequence< sal_Int8 >>::get();
+
+    Any aAny = m_XTransferable->getTransferData( aFlavor );
+
+    // unfortunately not all transferables fulfill the
+    // spec. and do throw an UnsupportedFlavorException
+    // so we must check the any
+    if ( !aAny.hasValue( ) )
+    {
+        OSL_FAIL( "XTransferable should throw an exception if ask for an unsupported flavor" );
+        throw UnsupportedFlavorException( );
+    }
+
+    Sequence< sal_Int8 > aTextHtmlSequence;
+    aAny >>= aTextHtmlSequence;
+
+    Sequence< sal_Int8 > aHTMLFormatSequence = TextHtmlToHTMLFormat( aTextHtmlSequence );
+
+    sal_uInt32 nBytesToTransfer = aHTMLFormatSequence.getLength( );
+
+    renderDataAndSetupStgMedium(
+        reinterpret_cast< const sal_Int8* >( aHTMLFormatSequence.getArray( ) ),
+        fetc,
+        0,
+        nBytesToTransfer,
+        stgmedium );
+}
+
+// IDataObject->EnumFormatEtc
+
+STDMETHODIMP CXTDataObject::EnumFormatEtc(
+    DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc )
+{
+    if ( nullptr == ppenumFormatetc )
+        return E_INVALIDARG;
+
+    if ( DATADIR_SET == dwDirection )
+        return E_NOTIMPL;
+
+    *ppenumFormatetc = nullptr;
+
+    InitializeFormatEtcContainer( );
+
+    HRESULT hr;
+    if ( DATADIR_GET == dwDirection )
+    {
+        *ppenumFormatetc = new CEnumFormatEtc( this, m_FormatEtcContainer );
+        static_cast< LPUNKNOWN >( *ppenumFormatetc )->AddRef( );
+
+        hr = S_OK;
+    }
+    else
+        hr = E_INVALIDARG;
+
+    return hr;
+}
+
+// IDataObject->QueryGetData
+
+STDMETHODIMP CXTDataObject::QueryGetData( FORMATETC * pFormatetc )
+{
+    if ( (nullptr == pFormatetc) || IsBadReadPtr( pFormatetc, sizeof( FORMATETC ) ) )
+        return E_INVALIDARG;
+
+    InitializeFormatEtcContainer( );
+
+    CFormatEtc aFormatetc(*pFormatetc);
+    return m_FormatEtcContainer.hasFormatEtc(aFormatetc) ? S_OK : S_FALSE;
+}
+
+// IDataObject->GetDataHere
+
+STDMETHODIMP CXTDataObject::GetDataHere( FORMATETC *, STGMEDIUM * )
+{
+    return E_NOTIMPL;
+}
+
+// IDataObject->GetCanonicalFormatEtc
+
+STDMETHODIMP CXTDataObject::GetCanonicalFormatEtc( FORMATETC *, FORMATETC * )
+{
+    return E_NOTIMPL;
+}
+
+// IDataObject->SetData
+
+STDMETHODIMP CXTDataObject::SetData( FORMATETC *, STGMEDIUM *, BOOL )
+{
+    return E_NOTIMPL;
+}
+
+// IDataObject->DAdvise
+
+STDMETHODIMP CXTDataObject::DAdvise( FORMATETC *, DWORD, IAdviseSink *, DWORD * )
+{
+    return E_NOTIMPL;
+}
+
+// IDataObject->DUnadvise
+
+STDMETHODIMP CXTDataObject::DUnadvise( DWORD )
+{
+    return E_NOTIMPL;
+}
+
+// IDataObject->EnumDAdvise
+
+STDMETHODIMP CXTDataObject::EnumDAdvise( IEnumSTATDATA ** )
+{
+    return E_NOTIMPL;
+}
+
+// for our convenience
+
+CXTDataObject::operator IDataObject*( )
+{
+    return static_cast< IDataObject* >( this );
+}
+
+inline
+DataFlavor CXTDataObject::formatEtcToDataFlavor( const FORMATETC& aFormatEtc ) const
+{
+    DataFlavor aFlavor;
+
+    if ( m_FormatRegistrar.hasSynthesizedLocale( ) )
+        aFlavor = m_DataFormatTranslator.getDataFlavorFromFormatEtc(
+            aFormatEtc.cfFormat, CFormatRegistrar::getSynthesizedLocale());
+    else
+        aFlavor = m_DataFormatTranslator.getDataFlavorFromFormatEtc(aFormatEtc.cfFormat);
+
+    if ( !aFlavor.MimeType.getLength( ) )
+        throw UnsupportedFlavorException( );
+
+    return aFlavor;
+}
+
+inline void CXTDataObject::InitializeFormatEtcContainer( )
+{
+    if ( !m_bFormatEtcContainerInitialized )
+    {
+        m_FormatRegistrar.RegisterFormats( m_XTransferable, m_FormatEtcContainer );
+        m_bFormatEtcContainerInitialized = true;
+    }
+}
+
+CEnumFormatEtc::CEnumFormatEtc( LPUNKNOWN lpUnkOuter, const CFormatEtcContainer& aFormatEtcContainer ) :
+    m_nRefCnt( 0 ),
+    m_lpUnkOuter( lpUnkOuter ),
+    m_FormatEtcContainer( aFormatEtcContainer )
+{
+    Reset( );
+}
+
+// IUnknown->QueryInterface
+
+STDMETHODIMP CEnumFormatEtc::QueryInterface( REFIID iid, void** ppvObject )
+{
+    if ( nullptr == ppvObject )
+        return E_INVALIDARG;
+
+    HRESULT hr = E_NOINTERFACE;
+
+    *ppvObject = nullptr;
+
+    if ( ( __uuidof( IUnknown ) == iid ) ||
+         ( __uuidof( IEnumFORMATETC ) == iid ) )
+    {
+        *ppvObject = static_cast< IUnknown* >( this );
+        static_cast< LPUNKNOWN >( *ppvObject )->AddRef( );
+        hr = S_OK;
+    }
+
+    return hr;
+}
+
+// IUnknown->AddRef
+
+STDMETHODIMP_(ULONG) CEnumFormatEtc::AddRef( )
+{
+    // keep the dataobject alive
+    m_lpUnkOuter->AddRef( );
+    return InterlockedIncrement( &m_nRefCnt );
+}
+
+// IUnknown->Release
+
+STDMETHODIMP_(ULONG) CEnumFormatEtc::Release( )
+{
+    // release the outer dataobject
+    m_lpUnkOuter->Release( );
+
+    ULONG nRefCnt = InterlockedDecrement( &m_nRefCnt );
+    if ( 0 == nRefCnt )
+        delete this;
+
+    return nRefCnt;
+}
+
+// IEnumFORMATETC->Next
+
+STDMETHODIMP CEnumFormatEtc::Next( ULONG nRequested, FORMATETC * lpDest, ULONG* lpFetched )
+{
+    if ( ( nRequested < 1 ) ||
+         (( nRequested > 1 ) && ( nullptr == lpFetched )) ||
+         IsBadWritePtr( lpDest, sizeof( FORMATETC ) * nRequested ) )
+        return E_INVALIDARG;
+
+    sal_uInt32 nFetched = m_FormatEtcContainer.nextFormatEtc( lpDest, nRequested );
+
+    if ( nullptr != lpFetched )
+        *lpFetched = nFetched;
+
+    return (nFetched == nRequested) ? S_OK : S_FALSE;
+}
+
+// IEnumFORMATETC->Skip
+
+STDMETHODIMP CEnumFormatEtc::Skip( ULONG celt )
+{
+    return m_FormatEtcContainer.skipFormatEtc( celt ) ? S_OK : S_FALSE;
+}
+
+// IEnumFORMATETC->Reset
+
+STDMETHODIMP CEnumFormatEtc::Reset( )
+{
+    m_FormatEtcContainer.beginEnumFormatEtc( );
+    return S_OK;
+}
+
+// IEnumFORMATETC->Clone
+
+STDMETHODIMP CEnumFormatEtc::Clone( IEnumFORMATETC** ppenum )
+{
+    if ( nullptr == ppenum )
+        return E_INVALIDARG;
+
+    *ppenum = new CEnumFormatEtc( m_lpUnkOuter, m_FormatEtcContainer );
+    static_cast< LPUNKNOWN >( *ppenum )->AddRef( );
+
+    return S_OK;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/XTDataObject.hxx b/vcl/win/dtrans/XTDataObject.hxx
new file mode 100644
index 0000000000..77f8c53f29
--- /dev/null
+++ b/vcl/win/dtrans/XTDataObject.hxx
@@ -0,0 +1,134 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <com/sun/star/datatransfer/clipboard/XClipboardOwner.hpp>
+
+#include "DataFmtTransl.hxx"
+
+#include "FetcList.hxx"
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <ole2.h>
+#include <objidl.h>
+
+/*--------------------------------------------------------------------------
+    - the function principle of the windows clipboard:
+      a data provider offers all formats he can deliver on the clipboard
+      a clipboard client ask for the available formats on the clipboard
+      and decides if there is a format he can use
+      if there is one, he requests the data in this format
+
+    - This class inherits from IDataObject and so can be placed on the
+      OleClipboard. The class wraps a transferable object which is the
+      original DataSource
+    - DataFlavors offered by this transferable will be translated into
+      appropriate clipboard formats
+    - if the transferable contains text data always text and unicodetext
+      will be offered or vice versa
+    - text data will be automatically converted between text and unicode text
+    - although the transferable may support text in different charsets
+      (codepages) only text in one codepage can be offered by the clipboard
+
+----------------------------------------------------------------------------*/
+
+class CStgTransferHelper;
+
+class CXTDataObject : public IDataObject
+{
+public:
+    CXTDataObject( const css::uno::Reference< css::uno::XComponentContext >& rxContext,
+                   const css::uno::Reference< css::datatransfer::XTransferable >& aXTransferable );
+    virtual ~CXTDataObject();
+
+    // ole interface implementation
+
+    //IUnknown interface methods
+    STDMETHODIMP           QueryInterface(REFIID iid, void** ppvObject) override;
+    STDMETHODIMP_( ULONG ) AddRef( ) override;
+    STDMETHODIMP_( ULONG ) Release( ) override;
+
+    // IDataObject interface methods
+    STDMETHODIMP GetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) override;
+    STDMETHODIMP GetDataHere( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) override;
+    STDMETHODIMP QueryGetData( FORMATETC * pFormatetc ) override;
+    STDMETHODIMP GetCanonicalFormatEtc( FORMATETC * pFormatectIn, FORMATETC * pFormatetcOut ) override;
+    STDMETHODIMP SetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium, BOOL fRelease ) override;
+    STDMETHODIMP EnumFormatEtc( DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc ) override;
+    STDMETHODIMP DAdvise( FORMATETC * pFormatetc, DWORD advf, IAdviseSink * pAdvSink, DWORD* pdwConnection ) override;
+    STDMETHODIMP DUnadvise( DWORD dwConnection ) override;
+    STDMETHODIMP EnumDAdvise( IEnumSTATDATA** ppenumAdvise ) override;
+
+    operator IDataObject*( );
+
+private:
+    css::datatransfer::DataFlavor formatEtcToDataFlavor( const FORMATETC& aFormatEtc ) const;
+
+    void renderLocaleAndSetupStgMedium( FORMATETC const & fetc, STGMEDIUM& stgmedium );
+    void renderUnicodeAndSetupStgMedium( FORMATETC const & fetc, STGMEDIUM& stgmedium );
+    void renderAnyDataAndSetupStgMedium( FORMATETC& fetc, STGMEDIUM& stgmedium );
+
+    HRESULT renderSynthesizedFormatAndSetupStgMedium( FORMATETC& fetc, STGMEDIUM& stgmedium );
+    void    renderSynthesizedUnicodeAndSetupStgMedium( FORMATETC const & fetc, STGMEDIUM& stgmedium );
+    void    renderSynthesizedTextAndSetupStgMedium( FORMATETC& fetc, STGMEDIUM& stgmedium );
+    void    renderSynthesizedHtmlAndSetupStgMedium( FORMATETC& fetc, STGMEDIUM& stgmedium );
+
+    inline void InitializeFormatEtcContainer( );
+
+private:
+    LONG m_nRefCnt;
+    css::uno::Reference< css::datatransfer::XTransferable >      m_XTransferable;
+    css::uno::Reference< css::uno::XComponentContext>            m_XComponentContext;
+    CFormatEtcContainer                                          m_FormatEtcContainer;
+    bool                                                         m_bFormatEtcContainerInitialized;
+    CDataFormatTranslator                                        m_DataFormatTranslator;
+    CFormatRegistrar                                             m_FormatRegistrar;
+};
+
+class CEnumFormatEtc : public IEnumFORMATETC
+{
+public:
+    CEnumFormatEtc( LPUNKNOWN lpUnkOuter, const CFormatEtcContainer& aFormatEtcContainer );
+    virtual ~CEnumFormatEtc() {}
+
+    // IUnknown
+    STDMETHODIMP           QueryInterface( REFIID iid, void** ppvObject ) override;
+    STDMETHODIMP_( ULONG ) AddRef( ) override;
+    STDMETHODIMP_( ULONG ) Release( ) override;
+
+    //IEnumFORMATETC
+    STDMETHODIMP Next( ULONG nRequested, FORMATETC * lpDest, ULONG* lpFetched ) override;
+    STDMETHODIMP Skip( ULONG celt ) override;
+    STDMETHODIMP Reset( ) override;
+    STDMETHODIMP Clone( IEnumFORMATETC** ppenum ) override;
+
+private:
+    LONG                m_nRefCnt;
+    LPUNKNOWN           m_lpUnkOuter;
+    CFormatEtcContainer m_FormatEtcContainer;
+};
+
+typedef CEnumFormatEtc *PCEnumFormatEtc;
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/clipboardmanager.cxx b/vcl/win/dtrans/clipboardmanager.cxx
new file mode 100644
index 0000000000..bff5aec49f
--- /dev/null
+++ b/vcl/win/dtrans/clipboardmanager.cxx
@@ -0,0 +1,198 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "clipboardmanager.hxx"
+#include <com/sun/star/container/ElementExistException.hpp>
+#include <com/sun/star/container/NoSuchElementException.hpp>
+#include <com/sun/star/lang/DisposedException.hpp>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <cppuhelper/supportsservice.hxx>
+#include <comphelper/sequence.hxx>
+#include <rtl/ref.hxx>
+
+using namespace com::sun::star::container;
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::datatransfer::clipboard;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace cppu;
+using namespace osl;
+
+using ::dtrans::ClipboardManager;
+
+static std::mutex g_InstanceGuard;
+static rtl::Reference<ClipboardManager> g_Instance;
+static bool g_Disposed = false;
+
+
+ClipboardManager::ClipboardManager():
+    m_aDefaultName(OUString("default"))
+{
+}
+
+ClipboardManager::~ClipboardManager()
+{
+}
+
+OUString SAL_CALL ClipboardManager::getImplementationName(  )
+{
+    return "com.sun.star.comp.datatransfer.ClipboardManager";
+}
+
+sal_Bool SAL_CALL ClipboardManager::supportsService( const OUString& ServiceName )
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+Sequence< OUString > SAL_CALL ClipboardManager::getSupportedServiceNames(  )
+{
+    return { "com.sun.star.datatransfer.clipboard.ClipboardManager" };
+}
+
+Reference< XClipboard > SAL_CALL ClipboardManager::getClipboard( const OUString& aName )
+{
+    std::unique_lock aGuard(m_aMutex);
+
+    // object is disposed already
+    if (m_bDisposed)
+        throw DisposedException("object is disposed.",
+                                static_cast < XClipboardManager * > (this));
+
+    ClipboardMap::iterator iter =
+        m_aClipboardMap.find(aName.getLength() ? aName : m_aDefaultName);
+
+    if (iter != m_aClipboardMap.end())
+        return iter->second;
+
+    throw NoSuchElementException(aName, static_cast < XClipboardManager * > (this));
+}
+
+void SAL_CALL ClipboardManager::addClipboard( const Reference< XClipboard >& xClipboard )
+{
+    OSL_ASSERT(xClipboard.is());
+
+    // check parameter
+    if (!xClipboard.is())
+        throw IllegalArgumentException("empty reference",
+                                       static_cast < XClipboardManager * > (this), 1);
+
+    // the name "default" is reserved for internal use
+    OUString aName = xClipboard->getName();
+    if ( m_aDefaultName == aName )
+        throw IllegalArgumentException("name reserved",
+                                       static_cast < XClipboardManager * > (this), 1);
+
+    // try to add new clipboard to the list
+    std::unique_lock aGuard(m_aMutex);
+    if (!m_bDisposed)
+    {
+        std::pair< const OUString, Reference< XClipboard > > value (
+            aName.getLength() ? aName : m_aDefaultName,
+            xClipboard );
+
+        std::pair< ClipboardMap::iterator, bool > p = m_aClipboardMap.insert(value);
+        aGuard.unlock();
+
+        // insert failed, element must exist already
+        if (!p.second)
+            throw ElementExistException(aName, static_cast < XClipboardManager * > (this));
+
+        // request disposing notifications
+        Reference< XComponent > xComponent(xClipboard, UNO_QUERY);
+        if (xComponent.is())
+            xComponent->addEventListener(static_cast < XEventListener * > (this));
+    }
+}
+
+void SAL_CALL ClipboardManager::removeClipboard( const OUString& aName )
+{
+    std::unique_lock aGuard(m_aMutex);
+    if (!m_bDisposed)
+        m_aClipboardMap.erase(aName.getLength() ? aName : m_aDefaultName );
+}
+
+Sequence< OUString > SAL_CALL ClipboardManager::listClipboardNames()
+{
+    std::unique_lock aGuard(m_aMutex);
+
+    if (m_bDisposed)
+        throw DisposedException("object is disposed.",
+                                static_cast < XClipboardManager * > (this));
+
+    return comphelper::mapKeysToSequence(m_aClipboardMap);
+}
+
+void ClipboardManager::disposing(std::unique_lock<std::mutex>& rGuard)
+{
+    rGuard.unlock();
+
+    {
+        std::unique_lock aGuard(g_InstanceGuard);
+        g_Instance.clear();
+        g_Disposed = true;
+    }
+
+    // removeClipboard is still allowed here,  so make a copy of the
+    // list (to ensure integrity) and clear the original.
+    rGuard.lock();
+    ClipboardMap aCopy;
+    std::swap(aCopy, m_aClipboardMap);
+    rGuard.unlock();
+
+    // dispose all clipboards still in list
+    for (auto const& elem : aCopy)
+    {
+        Reference< XComponent > xComponent(elem.second, UNO_QUERY);
+        if (xComponent.is())
+        {
+            try
+            {
+                xComponent->removeEventListener(static_cast < XEventListener * > (this));
+                xComponent->dispose();
+            }
+            catch (const Exception&)
+            {
+                // exceptions can be safely ignored here.
+            }
+        }
+    }
+}
+
+void SAL_CALL  ClipboardManager::disposing( const EventObject& event )
+{
+    Reference < XClipboard > xClipboard(event.Source, UNO_QUERY);
+
+    if (xClipboard.is())
+        removeClipboard(xClipboard->getName());
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+dtrans_ClipboardManager_get_implementation(
+    css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
+{
+    std::unique_lock aGuard(g_InstanceGuard);
+    if (g_Disposed)
+        return nullptr;
+    if (!g_Instance)
+        g_Instance.set(new ClipboardManager());
+    return cppu::acquire(g_Instance.get());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/clipboardmanager.hxx b/vcl/win/dtrans/clipboardmanager.hxx
new file mode 100644
index 0000000000..27f9ddbdae
--- /dev/null
+++ b/vcl/win/dtrans/clipboardmanager.hxx
@@ -0,0 +1,89 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <comphelper/compbase.hxx>
+
+#include <com/sun/star/datatransfer/clipboard/XClipboardManager.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XMultiServiceFactory.hpp>
+
+#include <map>
+
+typedef std::map< OUString, css::uno::Reference< css::datatransfer::clipboard::XClipboard > > ClipboardMap;
+
+namespace dtrans
+{
+
+    class ClipboardManager : public ::comphelper::WeakComponentImplHelper <
+      css::datatransfer::clipboard::XClipboardManager,
+      css::lang::XEventListener,
+      css::lang::XServiceInfo >
+    {
+        ClipboardMap m_aClipboardMap;
+
+        const OUString m_aDefaultName;
+
+        virtual ~ClipboardManager() override;
+    protected:
+        using WeakComponentImplHelperBase::disposing;
+    public:
+
+        ClipboardManager();
+
+        /*
+         * XServiceInfo
+         */
+
+        virtual OUString SAL_CALL getImplementationName(  ) override;
+
+        virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
+
+        virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames(  ) override;
+
+        /*
+         * XComponent
+         */
+
+        virtual void disposing(std::unique_lock<std::mutex>& rGuard) override;
+
+        /*
+         * XEventListener
+         */
+
+        virtual void SAL_CALL disposing( const css::lang::EventObject& Source ) override;
+
+        /*
+         * XClipboardManager
+         */
+
+        virtual css::uno::Reference< css::datatransfer::clipboard::XClipboard > SAL_CALL getClipboard( const OUString& aName ) override;
+
+        virtual void SAL_CALL addClipboard( const css::uno::Reference< css::datatransfer::clipboard::XClipboard >& xClipboard ) override;
+
+        virtual void SAL_CALL removeClipboard( const OUString& aName ) override;
+
+        virtual css::uno::Sequence< OUString > SAL_CALL listClipboardNames(  ) override;
+
+    };
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/ftransl.cxx b/vcl/win/dtrans/ftransl.cxx
new file mode 100644
index 0000000000..20056bba0e
--- /dev/null
+++ b/vcl/win/dtrans/ftransl.cxx
@@ -0,0 +1,550 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <string_view>
+
+#include <o3tl/string_view.hxx>
+#include <osl/diagnose.h>
+
+#include "ftransl.hxx"
+#include <com/sun/star/container/NoSuchElementException.hpp>
+#include <com/sun/star/datatransfer/XMimeContentType.hpp>
+#include <com/sun/star/datatransfer/MimeContentTypeFactory.hpp>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <cppuhelper/supportsservice.hxx>
+#include <cppuhelper/weak.hxx>
+#include "ImplHelper.hxx"
+
+#include <shlobj.h>
+
+#define CPPUTYPE_SEQSALINT8       cppu::UnoType<Sequence< sal_Int8 >>::get()
+#define CPPUTYPE_DEFAULT          CPPUTYPE_SEQSALINT8
+
+constexpr OUString Windows_FormatName = u"windows_formatname"_ustr;
+const css::uno::Type CppuType_ByteSequence = cppu::UnoType<css::uno::Sequence<sal_Int8>>::get();
+const css::uno::Type CppuType_String       = ::cppu::UnoType<OUString>::get();
+
+using namespace osl;
+using namespace cppu;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::container;
+
+namespace
+{
+
+struct FormatEntry
+{
+    FormatEntry(
+        const char *mime_content_type,
+        const char *human_presentable_name,
+        const char *native_format_name,
+        CLIPFORMAT std_clipboard_format_id,
+        css::uno::Type const & cppu_type
+    );
+
+    css::datatransfer::DataFlavor aDataFlavor;
+    OUString                      aNativeFormatName;
+    sal_Int32                     aStandardFormatId;
+};
+
+}
+
+FormatEntry::FormatEntry(
+    const char *mime_content_type,
+    const char *human_presentable_name,
+    const char *native_format_name,
+    CLIPFORMAT std_clipboard_format_id,
+    css::uno::Type const & cppu_type)
+  : aDataFlavor( OUString::createFromAscii(mime_content_type),  OUString::createFromAscii(human_presentable_name), cppu_type)
+{
+    if (native_format_name)
+        aNativeFormatName =  OUString::createFromAscii(native_format_name);
+    else
+        aNativeFormatName =  OUString::createFromAscii(human_presentable_name);
+
+    aStandardFormatId = std_clipboard_format_id;
+}
+
+// to optimize searching we add all entries with a
+// standard clipboard format number first, in the
+// table before the entries with CF_INVALID
+// if we are searching for a standard clipboard
+// format number we can stop if we find the first
+// CF_INVALID
+
+const std::vector< FormatEntry > g_TranslTable {
+    //SotClipboardFormatId::DIF
+        FormatEntry("application/x-openoffice-dif;windows_formatname=\"DIF\"", "DIF", "DIF", CF_DIF, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::BITMAP
+
+    // #i124085# CF_DIBV5 disabled, leads to problems at export. To fully support, using
+    // an own mime-type may be necessary. I have tried that, but saw no real advantages
+    // with different apps when exchanging bitmap-based data. So, disabled for now. At
+    // the same time increased png format exchange for better interoperability
+    //    FormatEntry("application/x-openoffice-bitmap;windows_formatname=\"Bitmap\"", "Bitmap", "Bitmap", CF_DIBV5, CPPUTYPE_DEFAULT),
+
+        FormatEntry("application/x-openoffice-bitmap;windows_formatname=\"Bitmap\"", "Bitmap", "Bitmap", CF_DIB, CPPUTYPE_DEFAULT),
+        FormatEntry("application/x-openoffice-bitmap;windows_formatname=\"Bitmap\"", "Bitmap", "Bitmap", CF_BITMAP, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::STRING
+        FormatEntry("text/plain;charset=utf-16", "Unicode-Text", "", CF_UNICODETEXT, CppuType_String),
+    // Format Locale - for internal use
+        FormatEntry("application/x-openoffice-locale;windows_formatname=\"Locale\"", "Locale", "Locale", CF_LOCALE, CPPUTYPE_DEFAULT),
+    // SOT_FORMAT_WMF
+        FormatEntry("application/x-openoffice-wmf;windows_formatname=\"Image WMF\"", "Windows MetaFile", "Image WMF", CF_METAFILEPICT, CPPUTYPE_DEFAULT),
+    // SOT_FORMAT_EMF
+        FormatEntry("application/x-openoffice-emf;windows_formatname=\"Image EMF\"", "Windows Enhanced MetaFile", "Image EMF", CF_ENHMETAFILE, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::FILE_LIST
+        FormatEntry("application/x-openoffice-filelist;windows_formatname=\"FileList\"", "FileList", "FileList", CF_HDROP, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SYLK
+        FormatEntry("application/x-openoffice-sylk;windows_formatname=\"Sylk\"", "Sylk", "Sylk", CF_SYLK, CPPUTYPE_DEFAULT ),
+    // SotClipboardFormatId::GDIMETAFILE
+        FormatEntry("application/x-openoffice-gdimetafile;windows_formatname=\"GDIMetaFile\"", "GDIMetaFile", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::PRIVATE
+        FormatEntry("application/x-openoffice-private;windows_formatname=\"Private\"", "Private", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::SIMPLE_FILE
+        FormatEntry("application/x-openoffice-file;windows_formatname=\"FileNameW\"", "FileName", nullptr, CF_INVALID, CppuType_String),
+    // SotClipboardFormatId::RTF
+        FormatEntry("text/rtf", "Rich Text Format", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::DRAWING
+        FormatEntry("application/x-openoffice-drawing;windows_formatname=\"Drawing Format\"", "Drawing Format", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::SVXB
+        FormatEntry("application/x-openoffice-svbx;windows_formatname=\"SVXB (StarView Bitmap/Animation)\"", "SVXB (StarView Bitmap/Animation)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::SVIM
+        FormatEntry("application/x-openoffice-svim;windows_formatname=\"SVIM (StarView ImageMap)\"", "SVIM (StarView ImageMap)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::XFA
+        FormatEntry("application/x-libreoffice-xfa;windows_formatname=\"XFA (XOutDev FillAttr Any)\"", "XFA (XOutDev FillAttr Any)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::EDITENGINE_ODF_TEXT_FLAT
+        FormatEntry("application/vnd.oasis.opendocument.text-flat-xml", "EditEngine ODF", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::INTERNALLINK_STATE
+        FormatEntry("application/x-openoffice-internallink-state;windows_formatname=\"StatusInfo of SvxInternalLink\"", "StatusInfo of SvxInternalLink", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::SOLK
+        FormatEntry("application/x-openoffice-solk;windows_formatname=\"SOLK (StarOffice Link)\"", "SOLK (StarOffice Link)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::NETSCAPE_BOOKMARK
+        FormatEntry("application/x-openoffice-netscape-bookmark;windows_formatname=\"Netscape Bookmark\"", "Netscape Bookmark", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::TREELISTBOX
+        FormatEntry("application/x-openoffice-treelistbox;windows_formatname=\"SV_LBOX_DD_FORMAT\"", "SV_LBOX_DD_FORMAT", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::NATIVE
+        FormatEntry("application/x-openoffice-native;windows_formatname=\"Native\"", "Native", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::OWNERLINK
+        FormatEntry("application/x-openoffice-ownerlink;windows_formatname=\"OwnerLink\"", "OwnerLink", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::STARSERVER
+        FormatEntry("application/x-openoffice-starserver;windows_formatname=\"StarServerFormat\"", "StarServerFormat", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::STAROBJECT
+        FormatEntry("application/x-openoffice-starobject;windows_formatname=\"StarObjectFormat\"", "StarObjectFormat", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::APPLETOBJECT
+        FormatEntry("application/x-openoffice-appletobject;windows_formatname=\"Applet Object\"", "Applet Object", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::PLUGIN_OBJECT
+        FormatEntry("application/x-openoffice-plugin-object;windows_formatname=\"PlugIn Object\"", "PlugIn Object", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::STARWRITER_30
+        FormatEntry("application/x-openoffice-starwriter-30;windows_formatname=\"StarWriter 3.0\"", "StarWriter 3.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARWRITER_40
+        FormatEntry("application/x-openoffice-starwriter-40;windows_formatname=\"StarWriter 4.0\"", "StarWriter 4.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARWRITER_50
+        FormatEntry("application/x-openoffice-starwriter-50;windows_formatname=\"StarWriter 5.0\"", "StarWriter 5.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARWRITERWEB_40
+        FormatEntry("application/x-openoffice-starwriterweb-40;windows_formatname=\"StarWriter/Web 4.0\"", "StarWriter/Web 4.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARWRITERWEB_50
+        FormatEntry("application/x-openoffice-starwriterweb-50;windows_formatname=\"StarWriter/Web 5.0\"", "StarWriter/Web 5.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARWRITERGLOB_40
+        FormatEntry("application/x-openoffice-starwriterglob-40;windows_formatname=\"StarWriter/Global 4.0\"", "StarWriter/Global 4.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::STARWRITERGLOB_50
+        FormatEntry("application/x-openoffice-starwriterglob-50;windows_formatname=\"StarWriter/Global 5.0\"", "StarWriter/Global 5.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARDRAW
+        FormatEntry("application/x-openoffice-stardraw;windows_formatname=\"StarDrawDocument\"", "StarDrawDocument", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARDRAW_40
+        FormatEntry("application/x-openoffice-stardraw-40;windows_formatname=\"StarDrawDocument 4.0\"", "StarDrawDocument 4.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARIMPRESS_50
+        FormatEntry("application/x-openoffice-starimpress-50;windows_formatname=\"StarImpress 5.0\"", "StarImpress 5.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::STARDRAW_50
+        FormatEntry("application/x-openoffice-stardraw-50;windows_formatname=\"StarDraw 5.0\"", "StarDraw 5.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARCALC
+        FormatEntry("application/x-openoffice-starcalc;windows_formatname=\"StarCalcDocument\"", "StarCalcDocument", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARCALC_40
+        FormatEntry("application/x-openoffice-starcalc-40;windows_formatname=\"StarCalc 4.0\"", "StarCalc 4.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::STARCALC_50
+        FormatEntry("application/x-openoffice-starcalc-50;windows_formatname=\"StarCalc 5.0\"", "StarCalc 5.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::STARCHART
+        FormatEntry("application/x-openoffice-starchart;windows_formatname=\"StarChartDocument\"", "StarChartDocument", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::STARCHART_40
+        FormatEntry("application/x-openoffice-starchart-40;windows_formatname=\"StarChartDocument 4.0\"", "StarChartDocument 4.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::STARCHART_50
+        FormatEntry("application/x-openoffice-starchart-50;windows_formatname=\"StarChart 5.0\"", "StarChart 5.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARIMAGE
+        FormatEntry("application/x-openoffice-starimage;windows_formatname=\"StarImageDocument\"", "StarImageDocument", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARIMAGE_40
+        FormatEntry("application/x-openoffice-starimage-40;windows_formatname=\"StarImageDocument 4.0\"", "StarImageDocument 4.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARIMAGE_50
+        FormatEntry("application/x-openoffice-starimage-50;windows_formatname=\"StarImage 5.0\"",  "StarImage 5.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARMATH
+        FormatEntry("application/x-openoffice-starmath;windows_formatname=\"StarMath\"", "StarMath", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARMATH_40
+        FormatEntry("application/x-openoffice-starmath-40;windows_formatname=\"StarMathDocument 4.0\"", "StarMathDocument 4.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARMATH_50
+        FormatEntry("application/x-openoffice-starmath-50;windows_formatname=\"StarMath 5.0\"", "StarMath 5.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STAROBJECT_PAINTDOC
+        FormatEntry("application/x-openoffice-starobject-paintdoc;windows_formatname=\"StarObjectPaintDocument\"", "StarObjectPaintDocument", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::FILLED_AREA
+        FormatEntry("application/x-openoffice-filled-area;windows_formatname=\"FilledArea\"", "FilledArea", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::HTML
+        FormatEntry("text/html", "HTML (HyperText Markup Language)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::HTML_SIMPLE
+        FormatEntry("application/x-openoffice-html-simple;windows_formatname=\"HTML Format\"", "HTML Format", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::CHAOS
+        FormatEntry("application/x-openoffice-chaos;windows_formatname=\"FORMAT_CHAOS\"", "FORMAT_CHAOS", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::CNT_MSGATTACHFILE
+        FormatEntry("application/x-openoffice-msgattachfile;windows_formatname=\"CNT_MSGATTACHFILE_FORMAT\"", "CNT_MSGATTACHFILE_FORMAT", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::BIFF_5
+        FormatEntry("application/x-openoffice-biff5;windows_formatname=\"Biff5\"", "Biff5", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::BIFF__5
+        FormatEntry("application/x-openoffice-biff-5;windows_formatname=\"Biff 5\"", "Biff 5", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::BIFF_8
+        FormatEntry("application/x-openoffice-biff-8;windows_formatname=\"Biff8\"", "Biff8", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SYLK_BIGCAPS
+        FormatEntry("application/x-openoffice-sylk-bigcaps;windows_formatname=\"SYLK\"", "SYLK", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::LINK
+        FormatEntry("application/x-openoffice-link;windows_formatname=\"Link\"", "Link", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARDRAW_TABBAR
+        FormatEntry("application/x-openoffice-stardraw-tabbar;windows_formatname=\"StarDraw TabBar\"", "StarDraw TabBar", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SONLK
+        FormatEntry("application/x-openoffice-sonlk;windows_formatname=\"SONLK (StarOffice Navi Link)\"", "SONLK (StarOffice Navi Link)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::MSWORD_DOC
+        FormatEntry("application/msword", "MSWordDoc", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STAR_FRAMESET_DOC
+        FormatEntry("application/x-openoffice-star-frameset-doc;windows_formatname=\"StarFrameSetDocument\"", "StarFrameSetDocument", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::OFFICE_DOC
+        FormatEntry("application/x-openoffice-office-doc;windows_formatname=\"OfficeDocument\"", "OfficeDocument", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::NOTES_DOCINFO
+        FormatEntry("application/x-openoffice-notes-docinfo;windows_formatname=\"NotesDocInfo\"", "NotesDocInfo", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::NOTES_HNOTE
+        FormatEntry("application/x-openoffice-notes-hnote;windows_formatname=\"NoteshNote\"", "NoteshNote", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::NOTES_NATIVE
+        FormatEntry("application/x-openoffice-notes-native;windows_formatname=\"Native\"", "Native", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SFX_DOC
+        FormatEntry("application/x-openoffice-sfx-doc;windows_formatname=\"SfxDocument\"", "SfxDocument", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::EVDF
+        FormatEntry("application/x-openoffice-evdf;windows_formatname=\"EVDF (Explorer View Dummy Format)\"", "EVDF (Explorer View Dummy Format)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::ESDF
+        FormatEntry("application/x-openoffice-esdf;windows_formatname=\"ESDF (Explorer Search Dummy Format)\"", "ESDF (Explorer Search Dummy Format)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::IDF
+        FormatEntry("application/x-openoffice-idf;windows_formatname=\"IDF (Iconview Dummy Format)\"", "IDF (Iconview Dummy Format)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::EFTP
+        FormatEntry("application/x-openoffice-eftp;windows_formatname=\"EFTP (Explorer Ftp File)\"", "EFTP (Explorer Ftp File)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::EFD
+        FormatEntry("application/x-openoffice-efd;windows_formatname=\"EFD (Explorer Ftp Dir)\"", "EFD (Explorer Ftp Dir)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SVX_FORMFIELDEXCH
+        FormatEntry("application/x-openoffice-svx-formfieldexch;windows_formatname=\"SvxFormFieldExch\"", "SvxFormFieldExch", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::EXTENDED_TABBAR
+        FormatEntry("application/x-openoffice-extended-tabbar;windows_formatname=\"ExtendedTabBar\"", "ExtendedTabBar", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SBA_DATAEXCHANGE
+        FormatEntry("application/x-openoffice-sba-dataexchange;windows_formatname=\"SBA-DATAFORMAT\"", "SBA-DATAFORMAT", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SBA_FIELDDATAEXCHANGE
+        FormatEntry("application/x-openoffice-sba-fielddataexchange;windows_formatname=\"SBA-FIELDFORMAT\"", "SBA-FIELDFORMAT", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SBA_PRIVATE_URL
+        FormatEntry("application/x-openoffice-sba-private-url;windows_formatname=\"SBA-PRIVATEURLFORMAT\"", "SBA-PRIVATEURLFORMAT", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SBA_TABED
+        FormatEntry("application/x-openoffice-sba-tabed;windows_formatname=\"Tabed\"", "Tabed", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SBA_TABID
+        FormatEntry("application/x-openoffice-sba-tabid;windows_formatname=\"Tabid\"", "Tabid", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SBA_JOIN
+        FormatEntry("application/x-openoffice-sba-join;windows_formatname=\"SBA-JOINFORMAT\"", "SBA-JOINFORMAT", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::OBJECTDESCRIPTOR
+        FormatEntry("application/x-openoffice-objectdescriptor-xml;windows_formatname=\"Star Object Descriptor (XML)\"", "Star Object Descriptor (XML)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::LINKSRCDESCRIPTOR
+        FormatEntry("application/x-openoffice-linksrcdescriptor-xml;windows_formatname=\"Star Link Source Descriptor (XML)\"", "Star Link Source Descriptor (XML)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::EMBED_SOURCE
+        FormatEntry("application/x-openoffice-embed-source-xml;windows_formatname=\"Star Embed Source (XML)\"", "Star Embed Source (XML)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::LINK_SOURCE
+        FormatEntry("application/x-openoffice-link-source-xml;windows_formatname=\"Star Link Source (XML)\"", "Star Link Source (XML)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::EMBEDDED_OBJ
+        FormatEntry("application/x-openoffice-embedded-obj-xml;windows_formatname=\"Star Embedded Object (XML)\"", "Star Embedded Object (XML)", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::FILECONTENT
+        FormatEntry("application/x-openoffice-filecontent;windows_formatname=\"" CFSTR_FILECONTENTS "\"", CFSTR_FILECONTENTS, nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::FILEGRPDESCRIPTOR
+        FormatEntry("application/x-openoffice-filegrpdescriptor;windows_formatname=\"" CFSTR_FILEDESCRIPTOR "\"", CFSTR_FILEDESCRIPTOR, nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::FILENAME
+        FormatEntry("application/x-openoffice-filename;windows_formatname=\"" CFSTR_FILENAME "\"", CFSTR_FILENAME, nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SD_OLE
+        FormatEntry("application/x-openoffice-sd-ole;windows_formatname=\"SD-OLE\"", "SD-OLE", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::EMBEDDED_OBJ_OLE
+        FormatEntry("application/x-openoffice-embedded-obj-ole;windows_formatname=\"Embedded Object\"", "Embedded Object", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::EMBED_SOURCE_OLE
+        FormatEntry("application/x-openoffice-embed-source-ole;windows_formatname=\"Embed Source\"", "Embed Source", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::OBJECTDESCRIPTOR_OLE
+        FormatEntry("application/x-openoffice-objectdescriptor-ole;windows_formatname=\"Object Descriptor\"", "Object Descriptor", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::LINKSRCDESCRIPTOR_OLE
+        FormatEntry("application/x-openoffice-linkdescriptor-ole;windows_formatname=\"Link Source Descriptor\"", "Link Source Descriptor", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::LINK_SOURCE_OLE
+        FormatEntry("application/x-openoffice-link-source-ole;windows_formatname=\"Link Source\"", "Link Source", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SBA_CTRLDATAEXCHANGE
+        FormatEntry("application/x-openoffice-sba-ctrldataexchange;windows_formatname=\"SBA-CTRLFORMAT\"", "SBA-CTRLFORMAT", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::OUTPLACE_OBJ
+        FormatEntry("application/x-openoffice-outplace-obj;windows_formatname=\"OutPlace Object\"", "OutPlace Object", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::CNT_OWN_CLIP
+        FormatEntry("application/x-openoffice-cnt-own-clip;windows_formatname=\"CntOwnClipboard\"", "CntOwnClipboard", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::INET_IMAGE
+        FormatEntry("application/x-openoffice-inet-image;windows_formatname=\"SO-INet-Image\"", "SO-INet-Image", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::NETSCAPE_IMAGE
+        FormatEntry("application/x-openoffice-netscape-image;windows_formatname=\"Netscape Image Format\"", "Netscape Image Format", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SBA_FORMEXCHANGE
+        FormatEntry("application/x-openoffice-sba-formexchange;windows_formatname=\"SBA_FORMEXCHANGE\"", "SBA_FORMEXCHANGE", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::SBA_REPORTEXCHANGE
+        FormatEntry("application/x-openoffice-sba-reportexchange;windows_formatname=\"SBA_REPORTEXCHANGE\"", "SBA_REPORTEXCHANGE", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::UNIFORMRESOURCELOCATOR
+        FormatEntry("application/x-openoffice-uniformresourcelocator;windows_formatname=\"UniformResourceLocatorW\"", "UniformResourceLocator", nullptr, CF_INVALID, CppuType_String),
+    //SotClipboardFormatId::STARCHARTDOCUMENT_50
+        FormatEntry("application/x-openoffice-starchartdocument-50;windows_formatname=\"StarChartDocument 5.0\"", "StarChartDocument 5.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::GRAPHOBJ
+        FormatEntry("application/x-openoffice-graphobj;windows_formatname=\"Graphic Object\"", "Graphic Object", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARWRITER_60
+        FormatEntry("application/vnd.sun.xml.writer", "Writer 6.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARWRITERWEB_60
+        FormatEntry("application/vnd.sun.xml.writer.web", "Writer/Web 6.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARWRITERGLOB_60
+        FormatEntry("application/vnd.sun.xml.writer.global", "Writer/Global 6.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARWDRAW_60
+        FormatEntry("application/vnd.sun.xml.draw", "Draw 6.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARIMPRESS_60
+        FormatEntry("application/vnd.sun.xml.impress", "Impress 6.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARCALC_60
+        FormatEntry("application/vnd.sun.xml.calc", "Calc 6.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARCHART_60
+        FormatEntry("application/vnd.sun.xml.chart", "Chart 6.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::STARMATH_60
+        FormatEntry("application/vnd.sun.xml.math", "Math 6.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::DIALOG_60
+        FormatEntry("application/vnd.sun.xml.dialog", "Dialog 6.0", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::BMP
+        FormatEntry("image/bmp", "Windows Bitmap", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::PNG
+        FormatEntry("image/png", "PNG", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::MATHML
+        FormatEntry("application/mathml+xml", "MathML", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::DUMMY3
+        FormatEntry("application/x-openoffice-dummy3;windows_formatname=\"SO_DUMMYFORMAT_3\"", "SO_DUMMYFORMAT_3", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    //SotClipboardFormatId::DUMMY4
+        FormatEntry("application/x-openoffice-dummy4;windows_formatname=\"SO_DUMMYFORMAT_4\"", "SO_DUMMYFORMAT_4", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    // SotClipboardFormatId::RICHTEXT
+        FormatEntry("text/richtext", "Richtext Format", nullptr, CF_INVALID, CPPUTYPE_DEFAULT),
+    };
+
+namespace {
+
+void findDataFlavorForStandardFormatId( sal_Int32 aStandardFormatId, DataFlavor& aDataFlavor )
+{
+    /*
+        we stop search if we find the first CF_INVALID
+        because in the translation table the entries with a
+        standard clipboard format id appear before the other
+        entries with CF_INVALID
+    */
+    std::vector< FormatEntry >::const_iterator citer = std::find_if(g_TranslTable.begin(), g_TranslTable.end(),
+        [&aStandardFormatId](const FormatEntry& rEntry) {
+            return rEntry.aStandardFormatId == aStandardFormatId
+                || rEntry.aStandardFormatId == CF_INVALID;
+        });
+    if (citer != g_TranslTable.end() && citer->aStandardFormatId == aStandardFormatId)
+        aDataFlavor = citer->aDataFlavor;
+}
+
+void findDataFlavorForNativeFormatName( const OUString& aNativeFormatName, DataFlavor& aDataFlavor )
+{
+    std::vector< FormatEntry >::const_iterator citer = std::find_if(g_TranslTable.begin(), g_TranslTable.end(),
+        [&aNativeFormatName](const FormatEntry& rEntry) {
+            return aNativeFormatName.equalsIgnoreAsciiCase(rEntry.aNativeFormatName); });
+    if (citer != g_TranslTable.end())
+        aDataFlavor = citer->aDataFlavor;
+}
+
+void findStandardFormatIdForCharset( const OUString& aCharset, Any& aAny )
+{
+    if ( aCharset.equalsIgnoreAsciiCase( "utf-16" ) )
+        aAny <<= static_cast< sal_Int32 >( CF_UNICODETEXT );
+    else
+    {
+        sal_Int32 wincp = getWinCPFromMimeCharset( aCharset );
+        if ( IsOEMCP ( wincp ) )
+            aAny <<= static_cast< sal_Int32 >( CF_OEMTEXT );
+    }
+}
+
+void setStandardFormatIdForNativeFormatName( const OUString& aNativeFormatName, Any& aAny )
+{
+    std::vector< FormatEntry >::const_iterator citer = std::find_if(g_TranslTable.begin(), g_TranslTable.end(),
+        [&aNativeFormatName](const FormatEntry& rEntry) {
+            return aNativeFormatName.equalsIgnoreAsciiCase(rEntry.aNativeFormatName)
+                && (CF_INVALID != rEntry.aStandardFormatId);
+        });
+    if (citer != g_TranslTable.end())
+        aAny <<= citer->aStandardFormatId;
+}
+
+void findStdFormatIdOrNativeFormatNameForFullMediaType(
+    const Reference< XMimeContentTypeFactory >& aRefXMimeFactory,
+    const OUString& aFullMediaType,
+    Any& aAny )
+{
+    std::vector< FormatEntry >::const_iterator citer = std::find_if(g_TranslTable.begin(), g_TranslTable.end(),
+        [&aRefXMimeFactory, &aFullMediaType](const FormatEntry& rEntry) {
+            Reference<XMimeContentType> refXMime( aRefXMimeFactory->createMimeContentType(rEntry.aDataFlavor.MimeType) );
+            return aFullMediaType.equalsIgnoreAsciiCase(refXMime->getFullMediaType());
+        });
+    if (citer != g_TranslTable.end())
+    {
+        sal_Int32 cf = citer->aStandardFormatId;
+        if ( CF_INVALID != cf )
+            aAny <<= cf;
+        else
+        {
+            OSL_ENSURE( citer->aNativeFormatName.getLength( ),
+                "Invalid standard format id and empty native format name in translation table" );
+            aAny <<= citer->aNativeFormatName;
+        }
+    }
+}
+
+bool isTextPlainMediaType( std::u16string_view fullMediaType )
+{
+    return o3tl::equalsIgnoreAsciiCase(fullMediaType, u"text/plain");
+}
+
+DataFlavor mkDataFlv(const OUString& cnttype, const OUString& hpname, Type dtype)
+{
+    DataFlavor dflv;
+    dflv.MimeType             = cnttype;
+    dflv.HumanPresentableName = hpname;
+    dflv.DataType             = dtype;
+    return dflv;
+}
+
+}
+
+CDataFormatTranslatorUNO::CDataFormatTranslatorUNO( const Reference< XComponentContext >& rxContext ) :
+    m_xContext( rxContext )
+{
+}
+
+Any SAL_CALL CDataFormatTranslatorUNO::getSystemDataTypeFromDataFlavor( const DataFlavor& aDataFlavor )
+{
+    Any aAny;
+
+    try
+    {
+        Reference< XMimeContentTypeFactory > refXMimeCntFactory = MimeContentTypeFactory::create( m_xContext );
+
+        Reference< XMimeContentType >
+            refXMimeCntType( refXMimeCntFactory->createMimeContentType( aDataFlavor.MimeType ) );
+
+        OUString fullMediaType = refXMimeCntType->getFullMediaType( );
+        if ( isTextPlainMediaType( fullMediaType ) )
+        {
+            // default is CF_TEXT
+            aAny <<= static_cast< sal_Int32 >( CF_TEXT );
+
+            if ( refXMimeCntType->hasParameter( "charset" ) )
+            {
+                // but maybe it is unicode text or oem text
+                OUString charset = refXMimeCntType->getParameterValue( "charset" );
+                findStandardFormatIdForCharset( charset, aAny );
+            }
+        }
+        else
+        {
+            if (refXMimeCntType->hasParameter(Windows_FormatName))
+            {
+                OUString winfmtname = refXMimeCntType->getParameterValue(Windows_FormatName);
+                aAny <<= winfmtname;
+
+                setStandardFormatIdForNativeFormatName( winfmtname, aAny );
+            }
+            else
+                findStdFormatIdOrNativeFormatNameForFullMediaType( refXMimeCntFactory, fullMediaType, aAny );
+        }
+    }
+    catch( IllegalArgumentException& )
+    {
+        OSL_FAIL( "Invalid content-type detected!" );
+    }
+    catch( NoSuchElementException& )
+    {
+        OSL_FAIL( "Illegal content-type parameter" );
+    }
+    catch( ... )
+    {
+        OSL_FAIL( "Unexpected error" );
+        throw;
+    }
+
+    return aAny;
+}
+
+DataFlavor SAL_CALL CDataFormatTranslatorUNO::getDataFlavorFromSystemDataType( const Any& aSysDataType )
+{
+    OSL_PRECOND( aSysDataType.hasValue( ), "Empty system data type delivered" );
+
+    DataFlavor aFlavor = mkDataFlv( OUString(), OUString(), CPPUTYPE_SEQSALINT8 );
+
+    if ( aSysDataType.getValueType( ) == cppu::UnoType<sal_Int32>::get() )
+    {
+        sal_Int32 clipformat = CF_INVALID;
+        aSysDataType >>= clipformat;
+        if ( CF_INVALID != clipformat )
+            findDataFlavorForStandardFormatId( clipformat, aFlavor );
+    }
+    else if ( aSysDataType.getValueType( ) == cppu::UnoType<OUString>::get() )
+    {
+        OUString nativeFormatName;
+        aSysDataType >>= nativeFormatName;
+
+        findDataFlavorForNativeFormatName( nativeFormatName, aFlavor );
+    }
+    else
+        OSL_FAIL( "Invalid data type received" );
+
+    return aFlavor;
+}
+
+// XServiceInfo
+
+OUString SAL_CALL CDataFormatTranslatorUNO::getImplementationName(  )
+{
+    return "com.sun.star.datatransfer.DataFormatTranslator";
+}
+
+sal_Bool SAL_CALL CDataFormatTranslatorUNO::supportsService( const OUString& ServiceName )
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+Sequence< OUString > SAL_CALL CDataFormatTranslatorUNO::getSupportedServiceNames( )
+{
+    return { "com.sun.star.datatransfer.DataFormatTranslator" };
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+dtrans_CDataFormatTranslatorUNO_get_implementation(
+    css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new CDataFormatTranslatorUNO(context));
+}
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/ftransl.hxx b/vcl/win/dtrans/ftransl.hxx
new file mode 100644
index 0000000000..7a5041be5f
--- /dev/null
+++ b/vcl/win/dtrans/ftransl.hxx
@@ -0,0 +1,59 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+#include <cppuhelper/implbase.hxx>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/datatransfer/XDataFormatTranslator.hpp>
+#include <com/sun/star/datatransfer/XMimeContentTypeFactory.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include "WinClip.hxx"
+
+#include <vector>
+
+class CDataFormatTranslatorUNO : public
+    cppu::WeakImplHelper< css::datatransfer::XDataFormatTranslator,
+                          css::lang::XServiceInfo >
+{
+
+public:
+    explicit CDataFormatTranslatorUNO( const css::uno::Reference< css::uno::XComponentContext >& rxContext );
+
+    // XDataFormatTranslator
+
+    virtual css::uno::Any SAL_CALL getSystemDataTypeFromDataFlavor( const css::datatransfer::DataFlavor& aDataFlavor ) override;
+
+    virtual css::datatransfer::DataFlavor SAL_CALL getDataFlavorFromSystemDataType( const css::uno::Any& aSysDataType ) override;
+
+    // XServiceInfo
+
+    virtual OUString SAL_CALL getImplementationName(  ) override;
+
+    virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
+
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames(  ) override;
+
+private:
+    const css::uno::Reference< css::uno::XComponentContext >  m_xContext;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/generic_clipboard.cxx b/vcl/win/dtrans/generic_clipboard.cxx
new file mode 100644
index 0000000000..fd822f091e
--- /dev/null
+++ b/vcl/win/dtrans/generic_clipboard.cxx
@@ -0,0 +1,136 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "generic_clipboard.hxx"
+#include <com/sun/star/lang/DisposedException.hpp>
+#include <com/sun/star/datatransfer/clipboard/RenderingCapabilities.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <cppuhelper/supportsservice.hxx>
+#include <osl/diagnose.h>
+
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::datatransfer::clipboard;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace cppu;
+using namespace osl;
+
+using ::dtrans::GenericClipboard;
+
+GenericClipboard::GenericClipboard() :
+    m_bInitialized(false)
+{
+}
+
+GenericClipboard::~GenericClipboard()
+{
+}
+
+void SAL_CALL GenericClipboard::initialize( const Sequence< Any >& aArguments )
+{
+    if (!m_bInitialized)
+    {
+        for (Any const & arg : aArguments)
+            if (arg.getValueType() == cppu::UnoType<OUString>::get())
+            {
+                arg >>= m_aName;
+                break;
+            }
+    }
+}
+
+OUString SAL_CALL GenericClipboard::getImplementationName(  )
+{
+    return "com.sun.star.comp.datatransfer.clipboard.GenericClipboard";
+}
+
+sal_Bool SAL_CALL GenericClipboard::supportsService( const OUString& ServiceName )
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+Sequence< OUString > SAL_CALL GenericClipboard::getSupportedServiceNames(    )
+{
+    return { "com.sun.star.datatransfer.clipboard.GenericClipboard" };
+}
+
+Reference< XTransferable > SAL_CALL GenericClipboard::getContents()
+{
+    std::unique_lock aGuard(m_aMutex);
+    return m_aContents;
+}
+
+void SAL_CALL GenericClipboard::setContents(const Reference< XTransferable >& xTrans,
+                                      const Reference< XClipboardOwner >& xClipboardOwner )
+{
+    // remember old values for callbacks before setting the new ones.
+    std::unique_lock aGuard(m_aMutex);
+
+    Reference< XClipboardOwner > oldOwner(m_aOwner);
+    m_aOwner = xClipboardOwner;
+
+    Reference< XTransferable > oldContents(m_aContents);
+    m_aContents = xTrans;
+
+    aGuard.unlock();
+
+    // notify old owner on loss of ownership
+    if( oldOwner.is() )
+        oldOwner->lostOwnership(static_cast < XClipboard * > (this), oldContents);
+
+    // notify all listeners on content changes
+    aGuard.lock();
+    ClipboardEvent aEvent(static_cast < XClipboard * > (this), m_aContents);
+    maClipboardListeners.notifyEach(aGuard, &XClipboardListener::changedContents, aEvent);
+}
+
+OUString SAL_CALL GenericClipboard::getName()
+{
+    return m_aName;
+}
+
+sal_Int8 SAL_CALL GenericClipboard::getRenderingCapabilities()
+{
+    return RenderingCapabilities::Delayed;
+}
+
+void SAL_CALL GenericClipboard::addClipboardListener( const Reference< XClipboardListener >& listener )
+{
+    std::unique_lock aGuard( m_aMutex );
+    OSL_ENSURE( !m_bDisposed, "object is disposed" );
+    if (!m_bDisposed)
+        maClipboardListeners.addInterface( aGuard, listener );
+}
+
+void SAL_CALL GenericClipboard::removeClipboardListener( const Reference< XClipboardListener >& listener )
+{
+    std::unique_lock aGuard( m_aMutex );
+    OSL_ENSURE( !m_bDisposed, "object is disposed" );
+    if (!m_bDisposed)
+        maClipboardListeners.removeInterface( aGuard, listener );
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+dtrans_GenericClipboard_get_implementation(
+    css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new GenericClipboard());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/generic_clipboard.hxx b/vcl/win/dtrans/generic_clipboard.hxx
new file mode 100644
index 0000000000..cc1ad976b3
--- /dev/null
+++ b/vcl/win/dtrans/generic_clipboard.hxx
@@ -0,0 +1,101 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <comphelper/compbase.hxx>
+
+#include <com/sun/star/datatransfer/clipboard/XClipboardEx.hpp>
+
+#include <com/sun/star/datatransfer/clipboard/XClipboardNotifier.hpp>
+#include <com/sun/star/lang/XMultiServiceFactory.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+
+namespace dtrans
+{
+
+    class GenericClipboard : public ::comphelper::WeakComponentImplHelper <
+        css::datatransfer::clipboard::XClipboardEx,
+        css::datatransfer::clipboard::XClipboardNotifier,
+        css::lang::XServiceInfo,
+        css::lang::XInitialization >
+    {
+        OUString     m_aName;
+
+        css::uno::Reference< css::datatransfer::XTransferable > m_aContents;
+        css::uno::Reference< css::datatransfer::clipboard::XClipboardOwner > m_aOwner;
+        comphelper::OInterfaceContainerHelper4<css::datatransfer::clipboard::XClipboardListener> maClipboardListeners;
+
+        bool m_bInitialized;
+        virtual ~GenericClipboard() override;
+
+    public:
+
+        GenericClipboard();
+
+        /*
+         * XInitialization
+         */
+
+        virtual void SAL_CALL initialize( const css::uno::Sequence< css::uno::Any >& aArguments ) override;
+
+        /*
+         * XServiceInfo
+         */
+
+        virtual OUString SAL_CALL getImplementationName(  ) override;
+
+        virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
+
+        virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames(  ) override;
+
+        /*
+         * XClipboard
+         */
+
+        virtual css::uno::Reference< css::datatransfer::XTransferable > SAL_CALL getContents() override;
+
+        virtual void SAL_CALL setContents(
+            const css::uno::Reference< css::datatransfer::XTransferable >& xTrans,
+            const css::uno::Reference< css::datatransfer::clipboard::XClipboardOwner >& xClipboardOwner ) override;
+
+        virtual OUString SAL_CALL getName() override;
+
+        /*
+         * XClipboardEx
+         */
+
+        virtual sal_Int8 SAL_CALL getRenderingCapabilities() override;
+
+        /*
+         * XClipboardNotifier
+         */
+
+        virtual void SAL_CALL addClipboardListener(
+            const css::uno::Reference< css::datatransfer::clipboard::XClipboardListener >& listener ) override;
+
+        virtual void SAL_CALL removeClipboardListener(
+            const css::uno::Reference< css::datatransfer::clipboard::XClipboardListener >& listener ) override;
+
+    };
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/globals.cxx b/vcl/win/dtrans/globals.cxx
new file mode 100644
index 0000000000..fcddef22e6
--- /dev/null
+++ b/vcl/win/dtrans/globals.cxx
@@ -0,0 +1,130 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <com/sun/star/datatransfer/dnd/DNDConstants.hpp>
+
+#include "globals.hxx"
+
+//--> TRA
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+
+// used as shortcut when drag-source and drop-target are the same
+css::uno::Reference< css::datatransfer::XTransferable > g_XTransferable;
+
+//<-- TRA
+
+using namespace com::sun::star::datatransfer::dnd::DNDConstants;
+
+sal_Int8 dndOleKeysToAction( DWORD grfKeyState, sal_Int8 nSourceActions)
+{
+    sal_Int8 ret= 0;
+
+    // no MK_ALT, MK_CONTROL, MK_SHIFT
+    if( !(grfKeyState & MK_CONTROL) &&
+        !(grfKeyState & MK_ALT)    &&
+        !(grfKeyState & MK_RBUTTON) &&
+        !(grfKeyState & MK_SHIFT))
+    {
+        if( nSourceActions & ACTION_MOVE )
+        {
+            ret= ACTION_DEFAULT | ACTION_MOVE;
+        }
+
+        else if( nSourceActions & ACTION_COPY )
+        {
+            ret= ACTION_COPY;
+        }
+
+        else if( nSourceActions & ACTION_LINK )
+        {
+            ret= ACTION_LINK;
+        }
+
+        else
+            ret = 0;
+    }
+    else if( grfKeyState & MK_SHIFT &&
+            !(grfKeyState & MK_CONTROL))
+    {
+        ret= ACTION_MOVE;
+    }
+    else if ( grfKeyState & MK_CONTROL &&
+              !(grfKeyState & MK_SHIFT) )
+    {
+        ret= ACTION_COPY;
+    }
+    else if ( grfKeyState & MK_CONTROL &&
+              grfKeyState & MK_SHIFT)
+    {
+        ret= ACTION_LINK;
+    }
+    else if ( grfKeyState & MK_RBUTTON ||
+              grfKeyState & MK_ALT)
+    {
+        ret= ACTION_COPY_OR_MOVE | ACTION_LINK;
+    }
+    return ret;
+}
+
+sal_Int8 dndOleDropEffectsToActions( DWORD dwEffect)
+{
+    sal_Int8 ret= ACTION_NONE;
+    if( dwEffect & DROPEFFECT_COPY)
+        ret |= ACTION_COPY;
+    if( dwEffect & DROPEFFECT_MOVE)
+        ret |= ACTION_MOVE;
+    if( dwEffect & DROPEFFECT_LINK)
+        ret |= ACTION_LINK;
+
+    return ret;
+}
+
+DWORD dndActionsToDropEffects( sal_Int8 actions)
+{
+    DWORD ret= DROPEFFECT_NONE;
+    if( actions & ACTION_MOVE)
+        ret |= DROPEFFECT_MOVE;
+    if( actions & ACTION_COPY)
+        ret |= DROPEFFECT_COPY;
+    if( actions & ACTION_LINK)
+        ret |= DROPEFFECT_LINK;
+    if( actions & ACTION_DEFAULT)
+        ret |= DROPEFFECT_COPY;
+    return ret;
+}
+
+DWORD dndActionsToSingleDropEffect( sal_Int8 actions)
+{
+    DWORD effects= dndActionsToDropEffects( actions);
+
+    sal_Int8 countEffect= 0;
+
+    if( effects & DROPEFFECT_MOVE)
+        countEffect++;
+    if( effects & DROPEFFECT_COPY)
+        countEffect++;
+    if( effects & DROPEFFECT_LINK)
+        countEffect++;
+
+    // DROPEFFECT_MOVE is the default effect
+    DWORD retVal= countEffect > 1 ? DROPEFFECT_MOVE : effects;
+    return retVal;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/globals.hxx b/vcl/win/dtrans/globals.hxx
new file mode 100644
index 0000000000..9bb174d0b6
--- /dev/null
+++ b/vcl/win/dtrans/globals.hxx
@@ -0,0 +1,70 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#pragma once
+
+#include <sal/config.h>
+
+#include <com/sun/star/uno/Reference.hxx>
+#include <osl/mutex.hxx>
+
+namespace com::sun::star::datatransfer
+{
+class XTransferable;
+}
+
+#include <wtypes.h>
+#include <sal/types.h>
+
+// This maps key states as occur as parameter, e.g. in IDropTarget::DragEnter,
+// IDropSource::QueryContinueDrag, to actions as are declared in
+// css::datatransfer::dnd::DNDConstants ( ACTION_MOVE etc).
+// If the grfKeyState indicates the ALt or right mousebutton then the returned
+// values combines all possible actions. This is because those keys and buttons are
+// used when the user expect a menu to appear when he drops. The menu then
+// contains entries, such as move, copy, link, cancel.
+// An odd fact is that the argument grfKeyState in IDropTarget::Drop does not
+// contain mouse buttons (winnt 4 SP6). That indicates that the right mouse button
+// is not considered relevant in a drag operation. Contrarily the file explorer
+// gives that button a special meaning: the user has to select the effect from
+// a context menu on drop.
+sal_Int8 dndOleKeysToAction(DWORD grfKeyState, sal_Int8 sourceActions);
+
+// The function maps a windows DROPEFFECTs to actions
+// ( css::datatransfer::dnd::DNDConstants).
+// The argument can be a combination of different DROPEFFECTS,
+// In that case the return value is also a combination of the
+// appropriate actions.
+sal_Int8 dndOleDropEffectsToActions(DWORD dwEffect);
+
+// The function maps actions ( css::datatransfer::dnd::DNDConstants)
+// to window DROPEFFECTs.
+// The argument can be a combination of different actions
+// In that case the return value is also a combination of the
+// appropriate DROPEFFECTS.
+DWORD dndActionsToDropEffects(sal_Int8 actions);
+
+// If the argument constitutes only one action then it is mapped to the
+// corresponding DROPEFFECT otherwise DROPEFFECT_MOVE is returned. This is
+// why move is the default effect (no modifiers pressed, or right mouse button
+// or Alt).
+DWORD dndActionsToSingleDropEffect(sal_Int8 actions);
+
+extern css::uno::Reference<css::datatransfer::XTransferable> g_XTransferable;
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/idroptarget.cxx b/vcl/win/dtrans/idroptarget.cxx
new file mode 100644
index 0000000000..8b403eb7a3
--- /dev/null
+++ b/vcl/win/dtrans/idroptarget.cxx
@@ -0,0 +1,96 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "idroptarget.hxx"
+
+IDropTargetImpl::IDropTargetImpl( DropTarget& pTarget): m_nRefCount( 0),
+                                    m_rDropTarget( pTarget)
+{
+}
+
+IDropTargetImpl::~IDropTargetImpl()
+{
+}
+
+//IDropTarget
+HRESULT STDMETHODCALLTYPE IDropTargetImpl::QueryInterface( REFIID riid, void  **ppvObject)
+{
+    if( !ppvObject)
+        return E_POINTER;
+    *ppvObject= nullptr;
+
+    if( riid == __uuidof( IUnknown))
+        *ppvObject= static_cast<IUnknown*>( this);
+    else if (  riid == __uuidof( IDropTarget))
+        *ppvObject= static_cast<IDropTarget*>( this);
+
+    if(*ppvObject)
+    {
+        AddRef();
+        return S_OK;
+    }
+    else
+        return E_NOINTERFACE;
+
+}
+
+ULONG STDMETHODCALLTYPE IDropTargetImpl::AddRef()
+{
+    return InterlockedIncrement( &m_nRefCount);
+}
+
+ULONG STDMETHODCALLTYPE IDropTargetImpl::Release()
+{
+    LONG count= InterlockedDecrement( &m_nRefCount);
+    if( m_nRefCount == 0 )
+        delete this;
+    return count;
+}
+
+STDMETHODIMP IDropTargetImpl::DragEnter( IDataObject __RPC_FAR *pDataObj,
+                                    DWORD grfKeyState,
+                                    POINTL pt,
+                                    DWORD  *pdwEffect)
+{
+    return m_rDropTarget.DragEnter( pDataObj, grfKeyState,
+                                  pt, pdwEffect);
+}
+
+STDMETHODIMP IDropTargetImpl::DragOver( DWORD grfKeyState,
+                                   POINTL pt,
+                                   DWORD  *pdwEffect)
+{
+    return m_rDropTarget.DragOver( grfKeyState, pt, pdwEffect);
+}
+
+STDMETHODIMP IDropTargetImpl::DragLeave()
+{
+    return m_rDropTarget.DragLeave();
+}
+
+STDMETHODIMP IDropTargetImpl::Drop( IDataObject  *pDataObj,
+                   DWORD grfKeyState,
+                   POINTL pt,
+                   DWORD __RPC_FAR *pdwEffect)
+{
+    return m_rDropTarget.Drop( pDataObj, grfKeyState,
+                                   pt, pdwEffect);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/idroptarget.hxx b/vcl/win/dtrans/idroptarget.hxx
new file mode 100644
index 0000000000..5871373c6c
--- /dev/null
+++ b/vcl/win/dtrans/idroptarget.hxx
@@ -0,0 +1,65 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#pragma once
+
+#include <win/dnd_target.hxx>
+
+class IDropTargetImpl: public IDropTarget
+{
+    LONG m_nRefCount;
+    // Calls to IDropTarget functions are delegated to a DropTarget.
+    DropTarget& m_rDropTarget;
+
+    virtual ~IDropTargetImpl(); // delete is only called by IUnknown::Release
+    IDropTargetImpl( const IDropTargetImpl& );
+    IDropTargetImpl& operator=( const IDropTargetImpl& );
+public:
+    explicit IDropTargetImpl(DropTarget& rTarget);
+
+       // IDropTarget
+    virtual HRESULT STDMETHODCALLTYPE QueryInterface(
+            /* [in] */ REFIID riid,
+            /* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject) override;
+
+    virtual ULONG STDMETHODCALLTYPE AddRef( ) override;
+
+    virtual ULONG STDMETHODCALLTYPE Release( ) override;
+
+    virtual HRESULT STDMETHODCALLTYPE DragEnter(
+            /* [unique][in] */ IDataObject __RPC_FAR *pDataObj,
+            /* [in] */ DWORD grfKeyState,
+            /* [in] */ POINTL pt,
+            /* [out][in] */ DWORD __RPC_FAR *pdwEffect) override;
+
+    virtual HRESULT STDMETHODCALLTYPE DragOver(
+            /* [in] */ DWORD grfKeyState,
+            /* [in] */ POINTL pt,
+            /* [out][in] */ DWORD __RPC_FAR *pdwEffect) override;
+
+    virtual HRESULT STDMETHODCALLTYPE DragLeave( ) override;
+
+    virtual HRESULT STDMETHODCALLTYPE Drop(
+            /* [unique][in] */ IDataObject __RPC_FAR *pDataObj,
+            /* [in] */ DWORD grfKeyState,
+            /* [in] */ POINTL pt,
+            /* [out][in] */ DWORD __RPC_FAR *pdwEffect) override;
+
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/source.cxx b/vcl/win/dtrans/source.cxx
new file mode 100644
index 0000000000..94124b23dd
--- /dev/null
+++ b/vcl/win/dtrans/source.cxx
@@ -0,0 +1,373 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <com/sun/star/datatransfer/dnd/DNDConstants.hpp>
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <com/sun/star/awt/MouseButton.hpp>
+#include <com/sun/star/awt/MouseEvent.hpp>
+#include <cppuhelper/supportsservice.hxx>
+#include <o3tl/any.hxx>
+#include <comphelper/diagnose_ex.hxx>
+
+#include <process.h>
+#include <memory>
+
+#include <win/dnd_source.hxx>
+#include "globals.hxx"
+#include "sourcecontext.hxx"
+#include "DtObjFactory.hxx"
+
+#include <rtl/ustring.h>
+#include <osl/thread.h>
+#include <winuser.h>
+#include <stdio.h>
+
+using namespace cppu;
+using namespace osl;
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::datatransfer::dnd;
+using namespace com::sun::star::datatransfer::dnd::DNDConstants;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::awt::MouseButton;
+using namespace com::sun::star::awt;
+using namespace com::sun::star::lang;
+
+static unsigned __stdcall DndOleSTAFunc(void* pParams);
+
+DragSource::DragSource( const Reference<XComponentContext>& rxContext):
+    WeakComponentImplHelper< XDragSource, XInitialization, XServiceInfo >(m_aMutex),
+    m_xContext( rxContext ),
+//  m_pcurrentContext_impl(0),
+    m_hAppWindow(nullptr),
+    m_MouseButton(0),
+    m_RunningDndOperationCount(0)
+{
+}
+
+DragSource::~DragSource()
+{
+}
+
+/** First start a new drag and drop thread if
+     the last one has finished
+
+     ????
+          Do we really need a separate thread for
+          every Dnd operation or only if the source
+          thread is an MTA thread
+     ????
+*/
+void DragSource::StartDragImpl(
+    const DragGestureEvent& trigger,
+    sal_Int8 sourceActions,
+    sal_Int32 /*cursor*/,
+    sal_Int32 /*image*/,
+    const Reference<XTransferable >& trans,
+    const Reference<XDragSourceListener >& listener )
+{
+    // The actions supported by the drag source
+    m_sourceActions= sourceActions;
+    // We need to know which mouse button triggered the operation.
+    // If it was the left one, then the drop occurs when that button
+    // has been released and if it was the right one then the drop
+    // occurs when the right button has been released. If the event is not
+    // set then we assume that the left button is pressed.
+    MouseEvent evtMouse;
+    trigger.Event >>= evtMouse;
+    m_MouseButton= evtMouse.Buttons;
+
+    // The SourceContext class administers the XDragSourceListener s and
+    // fires events to them. An instance only exists in the scope of this
+    // function. However, the drag and drop operation causes callbacks
+    // to the IDropSource interface implemented in this class (but only
+    // while this function executes). The source context is also used
+    // in DragSource::QueryContinueDrag.
+    m_currentContext = new SourceContext(this, listener);
+
+    // Convert the XTransferable data object into an IDataObject object;
+
+    //--> TRA
+    g_XTransferable = trans;
+    //<-- TRA
+
+    m_spDataObject= CDTransObjFactory::createDataObjFromTransferable(
+                    m_xContext, trans);
+
+    // Obtain the id of the thread that created the window
+    DWORD processId;
+    m_threadIdWindow= GetWindowThreadProcessId( m_hAppWindow, &processId);
+
+    // hold the instance for the DnD thread, it's too late
+    // to acquire at the start of the thread procedure
+    // the thread procedure is responsible for the release
+    acquire();
+
+    // The thread accesses members of this instance but does not call acquire.
+    // Hopefully this instance is not destroyed before the thread has terminated.
+    HANDLE hThread
+        = reinterpret_cast<HANDLE>(_beginthreadex(nullptr, 0, DndOleSTAFunc, this, 0, nullptr));
+
+    // detach from thread
+    CloseHandle(hThread);
+}
+
+// XInitialization
+/** aArguments contains a machine id */
+void SAL_CALL DragSource::initialize( const Sequence< Any >& aArguments )
+{
+    if( aArguments.getLength() >=2)
+        m_hAppWindow= reinterpret_cast<HWND>(static_cast<sal_uIntPtr>(*o3tl::doAccess<sal_uInt64>(aArguments[1])));
+    OSL_ASSERT( IsWindow( m_hAppWindow) );
+}
+
+/** XDragSource */
+sal_Bool SAL_CALL DragSource::isDragImageSupported(  )
+{
+    return false;
+}
+
+sal_Int32 SAL_CALL DragSource::getDefaultCursor( sal_Int8 /*dragAction*/ )
+{
+    return 0;
+}
+
+/** Notifies the XDragSourceListener by
+     calling dragDropEnd */
+void SAL_CALL DragSource::startDrag(
+    const DragGestureEvent& trigger,
+    sal_Int8 sourceActions,
+    sal_Int32 cursor,
+    sal_Int32 image,
+    const Reference<XTransferable >& trans,
+    const Reference<XDragSourceListener >& listener )
+{
+    // Allow only one running dnd operation at a time,
+    // see XDragSource documentation
+
+    LONG cnt = InterlockedIncrement(&m_RunningDndOperationCount);
+
+    if (1 == cnt)
+    {
+        StartDragImpl(trigger, sourceActions, cursor, image, trans, listener);
+    }
+    else
+    {
+        cnt = InterlockedDecrement(&m_RunningDndOperationCount);
+
+        DragSourceDropEvent dsde;
+
+        dsde.DropAction  = ACTION_NONE;
+        dsde.DropSuccess = false;
+
+        try
+        {
+            listener->dragDropEnd(dsde);
+        }
+        catch(RuntimeException&)
+        {
+            TOOLS_WARN_EXCEPTION( "vcl", "Runtime exception during event dispatching");
+        }
+    }
+}
+
+/** IDropTarget */
+HRESULT STDMETHODCALLTYPE DragSource::QueryInterface( REFIID riid, void  **ppvObject)
+{
+    if( !ppvObject)
+        return E_POINTER;
+    *ppvObject= nullptr;
+
+    if(  riid == __uuidof( IUnknown) )
+        *ppvObject= static_cast<IUnknown*>( this);
+    else if ( riid == __uuidof( IDropSource) )
+        *ppvObject= static_cast<IDropSource*>( this);
+
+    if(*ppvObject)
+    {
+        AddRef();
+        return S_OK;
+    }
+    else
+        return E_NOINTERFACE;
+
+}
+
+ULONG STDMETHODCALLTYPE DragSource::AddRef()
+{
+    acquire();
+    return static_cast<ULONG>(m_refCount);
+}
+
+ULONG STDMETHODCALLTYPE DragSource::Release()
+{
+    ULONG ref= m_refCount;
+    release();
+    return --ref;
+}
+
+/** IDropSource */
+HRESULT STDMETHODCALLTYPE DragSource::QueryContinueDrag(
+/* [in] */ BOOL fEscapePressed,
+/* [in] */ DWORD grfKeyState)
+{
+#if defined DBG_CONSOLE_OUT
+    printf("\nDragSource::QueryContinueDrag");
+#endif
+
+    HRESULT retVal= S_OK; // default continue DnD
+
+    if (fEscapePressed)
+    {
+        retVal= DRAGDROP_S_CANCEL;
+    }
+    else
+    {
+        if( ( m_MouseButton == MouseButton::RIGHT &&  !(grfKeyState & MK_RBUTTON) ) ||
+            ( m_MouseButton == MouseButton::MIDDLE && !(grfKeyState & MK_MBUTTON) ) ||
+            ( m_MouseButton == MouseButton::LEFT && !(grfKeyState & MK_LBUTTON) )   ||
+            ( m_MouseButton == 0 && !(grfKeyState & MK_LBUTTON) ) )
+        {
+            retVal= DRAGDROP_S_DROP;
+        }
+    }
+
+    // fire dropActionChanged event.
+    // this is actually done by the context, which also detects whether the action
+    // changed at all
+    sal_Int8 dropAction= fEscapePressed ? ACTION_NONE :
+                                                         dndOleKeysToAction( grfKeyState, m_sourceActions);
+
+    sal_Int8 userAction= fEscapePressed ? ACTION_NONE :
+                                                         dndOleKeysToAction( grfKeyState, -1 );
+
+    static_cast<SourceContext*>(m_currentContext.get())->fire_dropActionChanged(
+        dropAction, userAction);
+
+    return retVal;
+}
+
+HRESULT STDMETHODCALLTYPE DragSource::GiveFeedback(
+/* [in] */ DWORD
+#if defined DBG_CONSOLE_OUT
+dwEffect
+#endif
+)
+{
+#if defined DBG_CONSOLE_OUT
+    printf("\nDragSource::GiveFeedback %d", dwEffect);
+#endif
+
+    return DRAGDROP_S_USEDEFAULTCURSORS;
+}
+
+// XServiceInfo
+OUString SAL_CALL DragSource::getImplementationName(  )
+{
+    return "com.sun.star.comp.datatransfer.dnd.OleDragSource_V1";
+}
+// XServiceInfo
+sal_Bool SAL_CALL DragSource::supportsService( const OUString& ServiceName )
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+Sequence< OUString > SAL_CALL DragSource::getSupportedServiceNames(  )
+{
+    return { "com.sun.star.datatransfer.dnd.OleDragSource" };
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+dtrans_DragSource_get_implementation(
+    css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new DragSource(context));
+}
+
+/** This function is called as extra thread from
+    DragSource::executeDrag. The function
+    carries out a drag and drop operation by calling
+    DoDragDrop. The thread also notifies all
+    XSourceListener. */
+unsigned __stdcall DndOleSTAFunc(void* pParams)
+{
+    osl_setThreadName("DragSource DndOleSTAFunc");
+
+    // The structure contains all arguments for DoDragDrop and other
+    DragSource *pSource= static_cast<DragSource*>(pParams);
+
+    // Drag and drop only works in a thread in which OleInitialize is called.
+    HRESULT hr= OleInitialize( nullptr);
+
+    if(SUCCEEDED(hr))
+    {
+        // We force the creation of a thread message queue. This is necessary
+        // for a later call to AttachThreadInput
+        MSG msgtemp;
+        PeekMessageW( &msgtemp, nullptr, WM_USER, WM_USER, PM_NOREMOVE);
+
+        DWORD threadId= GetCurrentThreadId();
+
+        // This thread is attached to the thread that created the window. Hence
+        // this thread also receives all mouse and keyboard messages which are
+        // needed by DoDragDrop
+        AttachThreadInput( threadId , pSource->m_threadIdWindow, TRUE );
+
+        DWORD dwEffect= 0;
+        hr= DoDragDrop(
+            pSource->m_spDataObject.get(),
+            static_cast<IDropSource*>(pSource),
+            dndActionsToDropEffects( pSource->m_sourceActions),
+            &dwEffect);
+
+        // #105428 detach my message queue from the other threads
+        // message queue before calling fire_dragDropEnd else
+        // the office may appear to hang sometimes
+        AttachThreadInput( threadId, pSource->m_threadIdWindow, FALSE);
+
+        //--> TRA
+        // clear the global transferable again
+        g_XTransferable.clear();
+        //<-- TRA
+
+        OSL_ENSURE( hr != E_INVALIDARG, "IDataObject impl does not contain valid data");
+
+        //Fire event
+        sal_Int8 action= hr == DRAGDROP_S_DROP ? dndOleDropEffectsToActions( dwEffect) : ACTION_NONE;
+
+        static_cast<SourceContext*>(pSource->m_currentContext.get())->fire_dragDropEnd(
+                                                        hr == DRAGDROP_S_DROP, action);
+
+        // Destroy SourceContextslkfgj
+        pSource->m_currentContext= nullptr;
+        // Destroy the XTransferable wrapper
+        pSource->m_spDataObject=nullptr;
+
+        OleUninitialize();
+    }
+
+    InterlockedDecrement(&pSource->m_RunningDndOperationCount);
+
+    // the DragSource was manually acquired by
+    // thread starting method DelayedStartDrag
+    pSource->release();
+
+    return 0;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/sourcecontext.cxx b/vcl/win/dtrans/sourcecontext.cxx
new file mode 100644
index 0000000000..c0e6371c5b
--- /dev/null
+++ b/vcl/win/dtrans/sourcecontext.cxx
@@ -0,0 +1,134 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <com/sun/star/datatransfer/dnd/DNDConstants.hpp>
+
+#include "sourcecontext.hxx"
+
+using namespace com::sun::star::datatransfer::dnd;
+using namespace com::sun::star::datatransfer::dnd::DNDConstants;
+
+SourceContext::SourceContext( DragSource* pSource,
+                             const Reference<XDragSourceListener>& listener):
+        WeakComponentImplHelper<XDragSourceContext>(m_aMutex),
+        m_pDragSource( pSource),
+        m_dragSource( static_cast<XDragSource*>( m_pDragSource) )
+{
+#if OSL_DEBUG_LEVEL > 1
+    if( listener.is())
+#endif
+    rBHelper.addListener( cppu::UnoType<decltype(listener)>::get(), listener );
+}
+
+SourceContext::~SourceContext()
+{
+}
+
+void SourceContext::addDragSourceListener(
+    const Reference<XDragSourceListener >& )
+{
+}
+
+void SourceContext::removeDragSourceListener(
+     const Reference<XDragSourceListener >& )
+{
+}
+
+sal_Int32 SAL_CALL SourceContext::getCurrentCursor(  )
+{
+    return 0;
+}
+
+void SAL_CALL SourceContext::setCursor( sal_Int32 /*cursorId*/ )
+{
+}
+
+void SAL_CALL SourceContext::setImage( sal_Int32 /*imageId*/ )
+{
+}
+
+void SAL_CALL SourceContext::transferablesFlavorsChanged(  )
+{
+}
+
+// non -interface functions
+// Fires XDragSourceListener::dragDropEnd events.
+void SourceContext::fire_dragDropEnd( bool success, sal_Int8 effect)
+{
+
+    DragSourceDropEvent e;
+
+    if( success )
+    {
+        e.DropAction=  effect;
+        e.DropSuccess= true;
+    }
+    else
+    {
+        e.DropAction= ACTION_NONE;
+        e.DropSuccess= false;
+    }
+    e.DragSource= m_dragSource;
+    e.DragSourceContext= static_cast<XDragSourceContext*>( this);
+    e.Source.set( static_cast<XDragSourceContext*>( this), UNO_QUERY);
+
+    OInterfaceContainerHelper* pContainer= rBHelper.getContainer(
+        cppu::UnoType<XDragSourceListener>::get());
+
+    if( pContainer)
+    {
+        OInterfaceIteratorHelper iter( *pContainer);
+        while( iter.hasMoreElements())
+        {
+            Reference<XDragSourceListener> listener(
+                static_cast<XDragSourceListener*>( iter.next()));
+            listener->dragDropEnd( e);
+        }
+    }
+}
+
+void SourceContext::fire_dropActionChanged( sal_Int8 dropAction, sal_Int8 userAction)
+{
+    if( m_currentAction != dropAction)
+    {
+        m_currentAction= dropAction;
+        DragSourceDragEvent e;
+        e.DropAction= dropAction;
+        e.UserAction= userAction;
+        e.DragSource= m_dragSource;
+        e.DragSourceContext= static_cast<XDragSourceContext*>( this);
+        e.Source.set( static_cast<XDragSourceContext*>( this), UNO_QUERY);
+
+        OInterfaceContainerHelper* pContainer= rBHelper.getContainer(
+            cppu::UnoType<XDragSourceListener>::get());
+
+        if( pContainer)
+        {
+            OInterfaceIteratorHelper iter( *pContainer);
+            while( iter.hasMoreElements())
+            {
+                Reference<XDragSourceListener> listener(
+                    static_cast<XDragSourceListener*>( iter.next()));
+                listener->dropActionChanged( e);
+            }
+        }
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/sourcecontext.hxx b/vcl/win/dtrans/sourcecontext.hxx
new file mode 100644
index 0000000000..4471747956
--- /dev/null
+++ b/vcl/win/dtrans/sourcecontext.hxx
@@ -0,0 +1,66 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#pragma once
+
+#include <com/sun/star/datatransfer/dnd/XDragSourceContext.hpp>
+#include <cppuhelper/compbase.hxx>
+#include <cppuhelper/basemutex.hxx>
+
+#include <win/dnd_source.hxx>
+
+using namespace ::com::sun::star::datatransfer;
+using namespace ::com::sun::star::datatransfer::dnd;
+using namespace ::cppu;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::lang;
+
+// This class fires events to XDragSourceListener implementations.
+// Of that interface only dragDropEnd and dropActionChanged are called.
+// The functions dragEnter, dragExit and dragOver are not supported
+// currently.
+// An instance of SourceContext only lives as long as the drag and drop
+// operation lasts.
+class SourceContext : public cppu::BaseMutex, public WeakComponentImplHelper<XDragSourceContext>
+{
+    DragSource* m_pDragSource;
+    Reference<XDragSource> m_dragSource;
+    // the action ( copy, move etc)
+    sal_Int8 m_currentAction;
+
+public:
+    SourceContext(DragSource* pSource, const Reference<XDragSourceListener>& listener);
+    ~SourceContext() override;
+    SourceContext(const SourceContext&) = delete;
+    SourceContext& operator=(const SourceContext&) = delete;
+
+    /// @throws RuntimeException
+    virtual void addDragSourceListener(const Reference<XDragSourceListener>& dsl);
+    /// @throws RuntimeException
+    virtual void removeDragSourceListener(const Reference<XDragSourceListener>& dsl);
+    virtual sal_Int32 SAL_CALL getCurrentCursor() override;
+    virtual void SAL_CALL setCursor(sal_Int32 cursorId) override;
+    virtual void SAL_CALL setImage(sal_Int32 imageId) override;
+    virtual void SAL_CALL transferablesFlavorsChanged() override;
+
+    // non - interface functions
+    void fire_dragDropEnd(bool success, sal_Int8 byte);
+    void fire_dropActionChanged(sal_Int8 dropAction, sal_Int8 userAction);
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/target.cxx b/vcl/win/dtrans/target.cxx
new file mode 100644
index 0000000000..abe53379ea
--- /dev/null
+++ b/vcl/win/dtrans/target.cxx
@@ -0,0 +1,646 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <com/sun/star/datatransfer/dnd/DNDConstants.hpp>
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <cppuhelper/supportsservice.hxx>
+#include <o3tl/any.hxx>
+
+#include <stdio.h>
+#include <win/dnd_target.hxx>
+#include "idroptarget.hxx"
+#include "globals.hxx"
+#include "targetdropcontext.hxx"
+#include "targetdragcontext.hxx"
+#include <rtl/ustring.h>
+#include <osl/thread.h>
+#include <sal/log.hxx>
+#include <comphelper/windowserrorstring.hxx>
+
+#include "DOTransferable.hxx"
+
+using namespace cppu;
+using namespace osl;
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::datatransfer::dnd;
+using namespace com::sun::star::datatransfer::dnd::DNDConstants;
+
+#define WM_REGISTERDRAGDROP WM_USER + 1
+#define WM_REVOKEDRAGDROP WM_USER + 2
+
+unsigned __stdcall DndTargetOleSTAFunc(void* pParams);
+
+DropTarget::DropTarget( const Reference<XComponentContext>& rxContext):
+    WeakComponentImplHelper<XInitialization,XDropTarget, XServiceInfo>(m_aMutex),
+    m_hWnd( nullptr),
+    m_threadIdWindow(0),
+    m_threadIdTarget(0),
+    m_hOleThread(nullptr),
+    m_oleThreadId( 0),
+    m_pDropTarget( nullptr),
+    m_xContext( rxContext ),
+    m_bActive(true),
+    m_nDefaultActions(ACTION_COPY|ACTION_MOVE|ACTION_LINK|ACTION_DEFAULT),
+    m_nCurrentDropAction( ACTION_NONE),
+    m_nLastDropAction(0),
+    m_bDropComplete(false)
+{
+}
+
+DropTarget::~DropTarget()
+{
+}
+// called from WeakComponentImplHelperX::dispose
+// WeakComponentImplHelper calls disposing before it destroys
+// itself.
+// NOTE: RevokeDragDrop decrements the ref count on the IDropTarget
+// interface. (m_pDropTarget)
+// If the HWND is invalid then it doesn't decrement and
+// the IDropTarget object will live on. MEMORY LEAK
+void SAL_CALL DropTarget::disposing()
+{
+    if( m_threadIdTarget)
+    {
+        // Call RevokeDragDrop and wait for the OLE thread to die;
+        PostThreadMessageW( m_threadIdTarget, WM_REVOKEDRAGDROP, reinterpret_cast<WPARAM>(this), 0);
+        WaitForSingleObject( m_hOleThread, INFINITE);
+        CloseHandle( m_hOleThread);
+        //OSL_ENSURE( SUCCEEDED( hr), "HWND not valid!" );
+    }
+    else
+    {
+        RevokeDragDrop( m_hWnd);
+        m_hWnd= nullptr;
+    }
+    if( m_pDropTarget)
+    {
+        CoLockObjectExternal( m_pDropTarget, FALSE, TRUE);
+        m_pDropTarget->Release();
+        m_pDropTarget = nullptr;
+    }
+
+    if( m_oleThreadId)
+    {
+        if( m_oleThreadId == CoGetCurrentProcess() )
+            OleUninitialize();
+    }
+
+}
+
+void SAL_CALL DropTarget::initialize( const Sequence< Any >& aArguments )
+{
+    // The window must be registered for Dnd by RegisterDragDrop. We must ensure
+    // that RegisterDragDrop is called from an STA ( OleInitialize) thread.
+    // As long as the window is registered we need to receive OLE messages in
+    // an OLE thread. That is to say, if DropTarget::initialize was called from an
+    // MTA thread then we create an OLE thread in which the window is registered.
+    // The thread will stay alive until aver RevokeDragDrop has been called.
+
+    // Additionally even if RegisterDragDrop is called from an STA thread we have
+    // to ensure that it is called from the same thread that created the Window
+    // otherwise messages sent during DND won't reach the windows message queue.
+    // Calling AttachThreadInput first would resolve this problem but would block
+    // the message queue of the calling thread. So if the current thread
+    // (even if it's an STA thread) and the thread that created the window are not
+    // identical we need to create a new thread as we do when the calling thread is
+    // an MTA thread.
+
+    if( aArguments.getLength() > 0)
+    {
+        // Get the window handle from aArgument. It is needed for RegisterDragDrop.
+        m_hWnd= reinterpret_cast<HWND>(static_cast<sal_uIntPtr>(*o3tl::doAccess<sal_uInt64>(aArguments[0])));
+        OSL_ASSERT( IsWindow( m_hWnd) );
+
+        // Obtain the id of the thread that created the window
+        m_threadIdWindow= GetWindowThreadProcessId( m_hWnd, nullptr);
+
+        HRESULT hr= OleInitialize( nullptr);
+
+        // Current thread is MTA or Current thread and Window thread are not identical
+        if( hr == RPC_E_CHANGED_MODE || GetCurrentThreadId() != m_threadIdWindow  )
+        {
+            OSL_ENSURE( ! m_threadIdTarget,"initialize was called twice");
+            // create the IDropTargetImplementation
+            m_pDropTarget= new IDropTargetImpl( *this );
+            m_pDropTarget->AddRef();
+
+            // Obtain the id of the thread that created the window
+            m_threadIdWindow= GetWindowThreadProcessId( m_hWnd, nullptr);
+            // The event is set by the thread that we will create momentarily.
+            // It indicates that the thread is ready to receive messages.
+            HANDLE m_evtThreadReady= CreateEventW( nullptr, FALSE, FALSE, nullptr);
+
+            m_hOleThread = reinterpret_cast<HANDLE>(_beginthreadex(nullptr, 0, DndTargetOleSTAFunc,
+                                            &m_evtThreadReady, 0, &m_threadIdTarget));
+            WaitForSingleObject( m_evtThreadReady, INFINITE);
+            CloseHandle( m_evtThreadReady);
+            PostThreadMessageW( m_threadIdTarget, WM_REGISTERDRAGDROP, reinterpret_cast<WPARAM>(this), 0);
+        }
+        else if( hr == S_OK || hr == S_FALSE)
+        {
+            // current thread is STA
+            // If OleInitialize has been called by the caller then we must not call
+            // OleUninitialize
+            if( hr == S_OK)
+            {
+                // caller did not call OleInitialize, so we call OleUninitialize
+                // remember the thread that will call OleUninitialize
+                m_oleThreadId= CoGetCurrentProcess(); // get a unique thread id
+            }
+
+            // Get the window handle from aArgument. It is needed for RegisterDragDrop.
+            // create the IDropTargetImplementation
+            m_pDropTarget= new IDropTargetImpl( *this );
+            m_pDropTarget->AddRef();
+            // CoLockObjectExternal is prescribed by the protocol. It bumps up the ref count
+            if( SUCCEEDED( CoLockObjectExternal( m_pDropTarget, TRUE, FALSE)))
+            {
+                if( FAILED( RegisterDragDrop( m_hWnd,  m_pDropTarget) ) )
+                {
+                    // do clean up if drag and drop is not possible
+                    CoLockObjectExternal( m_pDropTarget, FALSE, FALSE);
+                    m_pDropTarget->Release();
+                    m_pDropTarget = nullptr;
+                    m_hWnd= nullptr;
+                }
+            }
+        }
+        else
+            throw Exception("OleInitialize failed with " + OUString::number(hr), nullptr);
+
+    }
+}
+
+// This function is called as extra thread from DragSource::startDrag.
+// The function carries out a drag and drop operation by calling
+// DoDragDrop. The thread also notifies all XSourceListener.
+unsigned __stdcall DndTargetOleSTAFunc(void* pParams)
+{
+    osl_setThreadName("DropTarget DndTargetOleSTAFunc");
+
+    HRESULT hr= OleInitialize( nullptr);
+    if( SUCCEEDED( hr) )
+    {
+        MSG msg;
+        // force the creation of a message queue
+        PeekMessageW( &msg, nullptr, 0, 0, PM_NOREMOVE);
+        // Signal the creator ( DropTarget::initialize) that the thread is
+        // ready to receive messages.
+        SetEvent( *static_cast<HANDLE*>(pParams));
+        // Thread id is needed for attaching this message queue to the one of the
+        // thread where the window was created.
+        DWORD threadId= GetCurrentThreadId();
+        // We force the creation of a thread message queue. This is necessary
+        // for a later call to AttachThreadInput
+        for (;;)
+        {
+            int const bRet = GetMessageW(&msg, nullptr, 0, 0);
+            if (bRet == 0)
+            {
+                break;
+            }
+            if (-1 == bRet)
+            {
+                SAL_WARN("vcl.win.dtrans", "GetMessageW failed: " << WindowsErrorString(GetLastError()));
+                break;
+            }
+            if( msg.message == WM_REGISTERDRAGDROP)
+            {
+                DropTarget *pTarget= reinterpret_cast<DropTarget*>(msg.wParam);
+                // This thread is attached to the thread that created the window. Hence
+                // this thread also receives all mouse and keyboard messages which are
+                // needed
+                AttachThreadInput( threadId , pTarget->m_threadIdWindow, TRUE );
+
+                if( SUCCEEDED( CoLockObjectExternal(pTarget-> m_pDropTarget, TRUE, FALSE)))
+                {
+                    if( FAILED( RegisterDragDrop( pTarget-> m_hWnd, pTarget-> m_pDropTarget) ) )
+                    {
+                        // do clean up if drag and drop is not possible
+                        CoLockObjectExternal( pTarget->m_pDropTarget, FALSE, FALSE);
+                        pTarget->m_pDropTarget->Release();
+                        pTarget->m_pDropTarget = nullptr;
+                        pTarget->m_hWnd= nullptr;
+                    }
+                }
+            }
+            else if( msg.message == WM_REVOKEDRAGDROP)
+            {
+                DropTarget *pTarget= reinterpret_cast<DropTarget*>(msg.wParam);
+                RevokeDragDrop( pTarget-> m_hWnd);
+                // Detach this thread from the window thread
+                AttachThreadInput( threadId, pTarget->m_threadIdWindow, FALSE);
+                pTarget->m_hWnd= nullptr;
+                break;
+            }
+            TranslateMessage(  &msg);
+            DispatchMessageW( &msg);
+        }
+        OleUninitialize();
+    }
+    return 0;
+}
+
+// XServiceInfo
+OUString SAL_CALL DropTarget::getImplementationName(  )
+{
+    return "com.sun.star.comp.datatransfer.dnd.OleDropTarget_V1";
+}
+// XServiceInfo
+sal_Bool SAL_CALL DropTarget::supportsService( const OUString& ServiceName )
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+Sequence< OUString > SAL_CALL DropTarget::getSupportedServiceNames(  )
+{
+    return { "com.sun.star.datatransfer.dnd.OleDropTarget" };
+}
+
+// XDropTarget
+void SAL_CALL DropTarget::addDropTargetListener( const Reference< XDropTargetListener >& dtl )
+{
+    rBHelper.addListener( cppu::UnoType<decltype(dtl)>::get(), dtl );
+}
+
+void SAL_CALL DropTarget::removeDropTargetListener( const Reference< XDropTargetListener >& dtl )
+{
+    rBHelper.removeListener( cppu::UnoType<decltype(dtl)>::get(), dtl );
+}
+
+sal_Bool SAL_CALL DropTarget::isActive(  )
+{
+    return m_bActive; //m_bDropTargetRegistered;
+}
+
+void SAL_CALL DropTarget::setActive( sal_Bool _b )
+{
+    MutexGuard g(m_aMutex);
+    m_bActive= _b;
+}
+
+sal_Int8 SAL_CALL DropTarget::getDefaultActions(  )
+{
+    return m_nDefaultActions;
+}
+
+void SAL_CALL DropTarget::setDefaultActions( sal_Int8 actions )
+{
+    OSL_ENSURE( actions < 8, "No valid default actions");
+    m_nDefaultActions= actions;
+}
+
+HRESULT DropTarget::DragEnter( IDataObject *pDataObj,
+                                    DWORD grfKeyState,
+                                    POINTL pt,
+                                    DWORD  *pdwEffect)
+{
+#if defined DBG_CONSOLE_OUT
+    printf("\nDropTarget::DragEnter state: %x effect %d", grfKeyState, *pdwEffect);
+#endif
+    if( m_bActive )
+    {
+        // Intersection of pdwEffect and the allowed actions ( setDefaultActions)
+        m_nCurrentDropAction= getFilteredActions( grfKeyState, *pdwEffect);
+        // m_nLastDropAction has to be set by a listener. If no listener calls
+        //XDropTargetDragContext::acceptDrag and specifies an action then pdwEffect
+        // will be DROPEFFECT_NONE throughout
+        m_nLastDropAction= ACTION_DEFAULT | ACTION_MOVE;
+
+        m_currentDragContext = new TargetDragContext(this);
+
+        //--> TRA
+
+        // shortcut
+        if ( g_XTransferable.is( ) )
+            m_currentData = g_XTransferable;
+        else
+        {
+            // Convert the IDataObject to a XTransferable
+            m_currentData = new CDOTransferable(m_xContext, IDataObjectPtr(pDataObj));
+        }
+
+        //<-- TRA
+
+        if( m_nCurrentDropAction != ACTION_NONE)
+        {
+            DropTargetDragEnterEvent e;
+            e.SupportedDataFlavors= m_currentData->getTransferDataFlavors();
+            e.DropAction= m_nCurrentDropAction;
+            e.Source.set( static_cast<XDropTarget*>(this),UNO_QUERY);
+            e.Context= m_currentDragContext;
+            POINT point={ pt.x, pt.y};
+            ScreenToClient( m_hWnd, &point);
+            e.LocationX= point.x;
+            e.LocationY= point.y;
+            e.SourceActions= dndOleDropEffectsToActions( *pdwEffect);
+
+            fire_dragEnter( e);
+            // Check if the action derived from grfKeyState (m_nCurrentDropAction) or the action set
+            // by the listener (m_nCurrentDropAction) is allowed by the source. Only an allowed action is set
+            // in pdwEffect. The listener notification is asynchronous, that is we cannot expect that the listener
+            // has already reacted to the notification.
+            // If there is more than one valid action which is the case when ALT or RIGHT MOUSE BUTTON is pressed
+            // then getDropEffect returns DROPEFFECT_MOVE which is the default value if no other modifier is pressed.
+            // On drop the target should present the user a dialog from which the user may change the action.
+            sal_Int8 allowedActions= dndOleDropEffectsToActions( *pdwEffect);
+            *pdwEffect= dndActionsToSingleDropEffect( m_nLastDropAction & allowedActions);
+        }
+        else
+        {
+            *pdwEffect= DROPEFFECT_NONE;
+        }
+    }
+    return S_OK;
+}
+
+HRESULT DropTarget::DragOver( DWORD grfKeyState,
+                                   POINTL pt,
+                                   DWORD  *pdwEffect)
+{
+    if( m_bActive)
+    {
+        m_nCurrentDropAction= getFilteredActions( grfKeyState, *pdwEffect);
+
+        if( m_nCurrentDropAction)
+        {
+            DropTargetDragEvent e;
+            e.DropAction= m_nCurrentDropAction;
+            e.Source.set(static_cast<XDropTarget*>(this),UNO_QUERY);
+            e.Context= m_currentDragContext;
+            POINT point={ pt.x, pt.y};
+            ScreenToClient( m_hWnd, &point);
+            e.LocationX= point.x;
+            e.LocationY= point.y;
+            e.SourceActions= dndOleDropEffectsToActions( *pdwEffect);
+
+            // if grfKeyState has changed since the last DragOver then fire events.
+            // A listener might change m_nCurrentDropAction by calling the
+            // XDropTargetDragContext::acceptDrag function. But this is not important
+            // because in the afterwards fired dragOver event the action reflects
+            // grgKeyState again.
+            if( m_nLastDropAction != m_nCurrentDropAction)
+                fire_dropActionChanged( e);
+
+            // The Event contains a XDropTargetDragContext implementation.
+            fire_dragOver( e);
+            // Check if the action derived from grfKeyState (m_nCurrentDropAction) or the action set
+            // by the listener (m_nCurrentDropAction) is allowed by the source. Only an allowed action is set
+            // in pdwEffect. The listener notification is asynchronous, that is we cannot expect that the listener
+            // has already reacted to the notification.
+            // If there is more than one valid action which is the case when ALT or RIGHT MOUSE BUTTON is pressed
+            // then getDropEffect returns DROPEFFECT_MOVE which is the default value if no other modifier is pressed.
+            // On drop the target should present the user a dialog from which the user may change the action.
+            sal_Int8 allowedActions= dndOleDropEffectsToActions( *pdwEffect);
+            // set the last action to the current if listener has not changed the value yet
+            *pdwEffect= dndActionsToSingleDropEffect( m_nLastDropAction & allowedActions);
+        }
+        else
+        {
+            *pdwEffect= DROPEFFECT_NONE;
+        }
+    }
+#if defined DBG_CONSOLE_OUT
+    printf("\nDropTarget::DragOver %d", *pdwEffect );
+#endif
+    return S_OK;
+}
+
+HRESULT DropTarget::DragLeave()
+{
+#if defined DBG_CONSOLE_OUT
+    printf("\nDropTarget::DragLeave");
+#endif
+    if( m_bActive)
+    {
+
+        m_currentData=nullptr;
+        m_currentDragContext= nullptr;
+        m_currentDropContext= nullptr;
+        m_nLastDropAction= 0;
+
+        if( m_nDefaultActions != ACTION_NONE)
+        {
+            DropTargetEvent e;
+            e.Source=  static_cast<XDropTarget*>(this);
+
+            fire_dragExit( e);
+        }
+    }
+    return S_OK;
+}
+
+HRESULT DropTarget::Drop( IDataObject  * /*pDataObj*/,
+                   DWORD grfKeyState,
+                   POINTL pt,
+                   DWORD *pdwEffect)
+{
+#if defined DBG_CONSOLE_OUT
+    printf("\nDropTarget::Drop");
+#endif
+    if( m_bActive)
+    {
+
+        m_bDropComplete= false;
+
+        m_nCurrentDropAction= getFilteredActions( grfKeyState, *pdwEffect);
+        m_currentDropContext = new TargetDropContext(this);
+        if( m_nCurrentDropAction)
+        {
+            DropTargetDropEvent e;
+            e.DropAction= m_nCurrentDropAction;
+            e.Source.set( static_cast<XDropTarget*>(this), UNO_QUERY);
+            e.Context= m_currentDropContext;
+            POINT point={ pt.x, pt.y};
+            ScreenToClient( m_hWnd, &point);
+            e.LocationX= point.x;
+            e.LocationY= point.y;
+            e.SourceActions= dndOleDropEffectsToActions( *pdwEffect);
+            e.Transferable= m_currentData;
+            fire_drop( e);
+
+            //if fire_drop returns than a listener might have modified m_nCurrentDropAction
+            if( m_bDropComplete )
+            {
+                sal_Int8 allowedActions= dndOleDropEffectsToActions( *pdwEffect);
+                *pdwEffect= dndActionsToSingleDropEffect( m_nCurrentDropAction & allowedActions);
+            }
+            else
+                *pdwEffect= DROPEFFECT_NONE;
+        }
+        else
+            *pdwEffect= DROPEFFECT_NONE;
+
+        m_currentData= nullptr;
+        m_currentDragContext= nullptr;
+        m_currentDropContext= nullptr;
+        m_nLastDropAction= 0;
+    }
+    return S_OK;
+}
+
+void DropTarget::fire_drop( const DropTargetDropEvent& dte)
+{
+    OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+    if( pContainer)
+    {
+        OInterfaceIteratorHelper iter( *pContainer);
+        while( iter.hasMoreElements())
+        {
+            Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+            listener->drop( dte);
+        }
+    }
+}
+
+void DropTarget::fire_dragEnter( const DropTargetDragEnterEvent& e )
+{
+    OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+    if( pContainer)
+    {
+        OInterfaceIteratorHelper iter( *pContainer);
+        while( iter.hasMoreElements())
+        {
+            Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+            listener->dragEnter( e);
+        }
+    }
+}
+
+void DropTarget::fire_dragExit( const DropTargetEvent& dte )
+{
+    OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+
+    if( pContainer)
+    {
+        OInterfaceIteratorHelper iter( *pContainer);
+        while( iter.hasMoreElements())
+        {
+            Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+            listener->dragExit( dte);
+        }
+    }
+}
+
+void DropTarget::fire_dragOver( const DropTargetDragEvent& dtde )
+{
+    OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+    if( pContainer)
+    {
+        OInterfaceIteratorHelper iter( *pContainer );
+        while( iter.hasMoreElements())
+        {
+            Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+            listener->dragOver( dtde);
+        }
+    }
+}
+
+void DropTarget::fire_dropActionChanged( const DropTargetDragEvent& dtde )
+{
+    OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+    if( pContainer)
+    {
+        OInterfaceIteratorHelper iter( *pContainer);
+        while( iter.hasMoreElements())
+        {
+            Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+            listener->dropActionChanged( dtde);
+        }
+    }
+}
+
+// Non - interface functions
+// DropTarget fires events to XDropTargetListeners. The event object contains an
+// XDropTargetDropContext implementation. When the listener calls on that interface
+// then the calls are delegated from DropContext (XDropTargetDropContext) to these
+// functions.
+// Only one listener which visible area is affected is allowed to call on
+// XDropTargetDropContext
+// Returning sal_False would cause the XDropTargetDropContext or ..DragContext implementation
+// to throw an InvalidDNDOperationException, meaning that a Drag is not currently performed.
+// return sal_False results in throwing an InvalidDNDOperationException in the caller.
+
+void DropTarget::_acceptDrop(sal_Int8 dropOperation, const Reference<XDropTargetDropContext>& context)
+{
+    if( context == m_currentDropContext)
+    {
+        m_nCurrentDropAction= dropOperation;
+    }
+}
+
+void DropTarget::_rejectDrop( const Reference<XDropTargetDropContext>& context)
+{
+    if( context == m_currentDropContext)
+    {
+        m_nCurrentDropAction= ACTION_NONE;
+    }
+}
+
+void DropTarget::_dropComplete(bool success, const Reference<XDropTargetDropContext>& context)
+{
+    if(context == m_currentDropContext)
+    {
+        m_bDropComplete= success;
+    }
+}
+
+// DropTarget fires events to XDropTargetListeners. The event object can contains an
+// XDropTargetDragContext implementation. When the listener calls on that interface
+// then the calls are delegated from DragContext (XDropTargetDragContext) to these
+// functions.
+// Only one listener which visible area is affected is allowed to call on
+// XDropTargetDragContext
+void DropTarget::_acceptDrag( sal_Int8 dragOperation, const Reference<XDropTargetDragContext>& context)
+{
+    if( context == m_currentDragContext)
+    {
+        m_nLastDropAction= dragOperation;
+    }
+}
+
+void DropTarget::_rejectDrag( const Reference<XDropTargetDragContext>& context)
+{
+    if(context == m_currentDragContext)
+    {
+        m_nLastDropAction= ACTION_NONE;
+    }
+}
+
+// This function determines the action dependent on the pressed
+// key modifiers ( CTRL, SHIFT, ALT, Right Mouse Button). The result
+// is then checked against the allowed actions which can be set through
+// XDropTarget::setDefaultActions. Only those values which are also
+// default actions are returned. If setDefaultActions has not been called
+// beforehand the default actions comprise all possible actions.
+// params: grfKeyState - the modifier keys and mouse buttons currently pressed
+inline sal_Int8 DropTarget::getFilteredActions( DWORD grfKeyState, DWORD dwEffect)
+{
+    sal_Int8 actions= dndOleKeysToAction( grfKeyState, dndOleDropEffectsToActions( dwEffect));
+    return actions &  m_nDefaultActions;
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+dtrans_DropTarget_get_implementation(
+    css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new DropTarget(context));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/targetdragcontext.cxx b/vcl/win/dtrans/targetdragcontext.cxx
new file mode 100644
index 0000000000..71e345b74c
--- /dev/null
+++ b/vcl/win/dtrans/targetdragcontext.cxx
@@ -0,0 +1,39 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "targetdragcontext.hxx"
+
+TargetDragContext::TargetDragContext(DropTarget* p)
+{
+    m_pDropTarget = p;
+    p->acquire();
+}
+
+TargetDragContext::~TargetDragContext() { m_pDropTarget->release(); }
+
+void SAL_CALL TargetDragContext::acceptDrag(sal_Int8 dragOperation)
+{
+    m_pDropTarget->_acceptDrag(dragOperation, static_cast<XDropTargetDragContext*>(this));
+}
+void SAL_CALL TargetDragContext::rejectDrag()
+{
+    m_pDropTarget->_rejectDrag(static_cast<XDropTargetDragContext*>(this));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/targetdragcontext.hxx b/vcl/win/dtrans/targetdragcontext.hxx
new file mode 100644
index 0000000000..a64ab6a30b
--- /dev/null
+++ b/vcl/win/dtrans/targetdragcontext.hxx
@@ -0,0 +1,50 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <cppuhelper/implbase.hxx>
+#include <com/sun/star/datatransfer/dnd/XDropTargetDragContext.hpp>
+#include <com/sun/star/datatransfer/DataFlavor.hpp>
+
+#include <win/dnd_target.hxx>
+
+using namespace ::com::sun::star::datatransfer;
+using namespace ::com::sun::star::datatransfer::dnd;
+using namespace ::cppu;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::lang;
+
+class TargetDragContext : public WeakImplHelper<XDropTargetDragContext>
+{
+    // some calls to the functions of XDropTargetDragContext are delegated
+    // to non-interface functions of m_pDropTarget
+    DropTarget* m_pDropTarget;
+
+public:
+    explicit TargetDragContext(DropTarget* pTarget);
+    ~TargetDragContext() override;
+    TargetDragContext(const TargetDragContext&) = delete;
+    TargetDragContext& operator=(const TargetDragContext&) = delete;
+
+    virtual void SAL_CALL acceptDrag(sal_Int8 dragOperation) override;
+    virtual void SAL_CALL rejectDrag() override;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/targetdropcontext.cxx b/vcl/win/dtrans/targetdropcontext.cxx
new file mode 100644
index 0000000000..fe65389431
--- /dev/null
+++ b/vcl/win/dtrans/targetdropcontext.cxx
@@ -0,0 +1,50 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "targetdropcontext.hxx"
+
+using namespace ::com::sun::star::datatransfer::dnd;
+using namespace ::cppu;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::lang;
+
+TargetDropContext::TargetDropContext(DropTarget* p)
+{
+    m_pDropTarget = p;
+    p->acquire();
+}
+
+TargetDropContext::~TargetDropContext() { m_pDropTarget->release(); }
+
+void SAL_CALL TargetDropContext::acceptDrop(sal_Int8 dropOperation)
+{
+    m_pDropTarget->_acceptDrop(dropOperation, static_cast<XDropTargetDropContext*>(this));
+}
+
+void SAL_CALL TargetDropContext::rejectDrop()
+{
+    m_pDropTarget->_rejectDrop(static_cast<XDropTargetDropContext*>(this));
+}
+
+void SAL_CALL TargetDropContext::dropComplete(sal_Bool success)
+{
+    m_pDropTarget->_dropComplete(success, static_cast<XDropTargetDropContext*>(this));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/win/dtrans/targetdropcontext.hxx b/vcl/win/dtrans/targetdropcontext.hxx
new file mode 100644
index 0000000000..938a23f850
--- /dev/null
+++ b/vcl/win/dtrans/targetdropcontext.hxx
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <cppuhelper/implbase.hxx>
+#include <com/sun/star/datatransfer/dnd/XDropTargetDropContext.hpp>
+
+#include <win/dnd_target.hxx>
+
+using namespace ::com::sun::star::datatransfer::dnd;
+using namespace ::cppu;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::lang;
+
+class TargetDropContext : public WeakImplHelper<XDropTargetDropContext>
+{
+    // calls to the functions of XDropTargetDropContext are delegated
+    // to non-interface functions of m_pDropTarget
+    DropTarget* m_pDropTarget;
+
+public:
+    explicit TargetDropContext(DropTarget* pTarget);
+    ~TargetDropContext() override;
+    TargetDropContext(const TargetDropContext&) = delete;
+    TargetDropContext& operator=(const TargetDropContext&) = delete;
+
+    // XDropTargetDragContext
+    virtual void SAL_CALL acceptDrop(sal_Int8 dropOperation) override;
+    virtual void SAL_CALL rejectDrop() override;
+
+    // XDropTargetDropContext (inherits XDropTargetDragContext)
+    virtual void SAL_CALL dropComplete(sal_Bool success) override;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */