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

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

1 files changed, 2513 insertions, 0 deletions

diff --git a/extensions/source/ole/oleobjw.cxx b/extensions/source/ole/oleobjw.cxx
new file mode 100644
index 0000000000..85f410c546
--- /dev/null
+++ b/extensions/source/ole/oleobjw.cxx
@@ -0,0 +1,2513 @@
+/* -*- 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 "ole2uno.hxx"
+#include <sal/log.hxx>
+#include <o3tl/char16_t2wchar_t.hxx>
+
+#include <osl/diagnose.h>
+#include <osl/doublecheckedlocking.h>
+#include <osl/thread.h>
+
+#include <memory>
+#include <string_view>
+#include <com/sun/star/script/CannotConvertException.hpp>
+#include <com/sun/star/script/FailReason.hpp>
+#include <com/sun/star/beans/XMaterialHolder.hpp>
+#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
+#include <com/sun/star/script/XInvocation.hpp>
+#include <com/sun/star/bridge/ModelDependent.hpp>
+
+#include <com/sun/star/bridge/oleautomation/NamedArgument.hpp>
+#include <com/sun/star/bridge/oleautomation/PropertyPutArgument.hpp>
+#include <cppuhelper/exc_hlp.hxx>
+
+#include <typelib/typedescription.hxx>
+#include <rtl/uuid.h>
+#include <rtl/ustring.hxx>
+
+#include "jscriptclasses.hxx"
+
+#include "oleobjw.hxx"
+#include "unoobjw.hxx"
+#include <stdio.h>
+using namespace osl;
+using namespace cppu;
+using namespace com::sun::star::script;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::bridge;
+using namespace com::sun::star::bridge::oleautomation;
+using namespace com::sun::star::bridge::ModelDependent;
+using namespace ::com::sun::star;
+
+
+#define JSCRIPT_ID_PROPERTY L"_environment"
+#define JSCRIPT_ID          L"jscript"
+
+// key: XInterface pointer created by Invocation Adapter Factory
+// value: XInterface pointer to the wrapper class.
+// Entries to the map are made within
+// Any createOleObjectWrapper(IUnknown* pUnknown, const Type& aType);
+// Entries are being deleted if the wrapper class's destructor has been
+// called.
+// Before UNO object is wrapped to COM object this map is checked
+// to see if the UNO object is already a wrapper.
+std::unordered_map<sal_uIntPtr, sal_uIntPtr> AdapterToWrapperMap;
+// key: XInterface of the wrapper object.
+// value: XInterface of the Interface created by the Invocation Adapter Factory.
+// A COM wrapper is responsible for removing the corresponding entry
+// in AdapterToWrapperMap if it is being destroyed. Because the wrapper does not
+// know about its adapted interface it uses WrapperToAdapterMap to get the
+// adapted interface which is then used to locate the entry in AdapterToWrapperMap.
+std::unordered_map<sal_uIntPtr,sal_uIntPtr> WrapperToAdapterMap;
+
+std::unordered_map<sal_uIntPtr, WeakReference<XInterface> > ComPtrToWrapperMap;
+
+IUnknownWrapper::IUnknownWrapper( Reference<XMultiServiceFactory> const & xFactory,
+                                  sal_uInt8 unoWrapperClass, sal_uInt8 comWrapperClass):
+    UnoConversionUtilities<IUnknownWrapper>( xFactory, unoWrapperClass, comWrapperClass),
+    m_pxIdlClass( nullptr), m_eJScript( JScriptUndefined),
+    m_bComTlbIndexInit(false),  m_bHasDfltMethod(false), m_bHasDfltProperty(false)
+{
+}
+
+
+IUnknownWrapper::~IUnknownWrapper()
+{
+    o2u_attachCurrentThread();
+    MutexGuard guard(getBridgeMutex());
+    XInterface * xIntRoot = static_cast<OWeakObject *>(this);
+#if OSL_DEBUG_LEVEL > 0
+    acquire(); // make sure we don't delete us twice because of Reference
+    OSL_ASSERT( Reference<XInterface>( static_cast<XWeak*>(this), UNO_QUERY).get() == xIntRoot );
+#endif
+
+    // remove entries in global maps
+    auto it= WrapperToAdapterMap.find( reinterpret_cast<sal_uIntPtr>(xIntRoot));
+    if( it != WrapperToAdapterMap.end())
+    {
+        sal_uIntPtr adapter= it->second;
+
+        AdapterToWrapperMap.erase( adapter);
+        WrapperToAdapterMap.erase( it);
+    }
+
+    auto it_c= ComPtrToWrapperMap.find( reinterpret_cast<sal_uIntPtr>(m_spUnknown.p));
+    if(it_c != ComPtrToWrapperMap.end())
+        ComPtrToWrapperMap.erase(it_c);
+}
+
+Any IUnknownWrapper::queryInterface(const Type& t)
+{
+    if (t == cppu::UnoType<XDefaultMethod>::get() && !m_bHasDfltMethod )
+        return Any();
+    if (t == cppu::UnoType<XDefaultProperty>::get() && !m_bHasDfltProperty )
+        return Any();
+    if ( ( t == cppu::UnoType<XInvocation>::get() || t == cppu::UnoType<XAutomationInvocation>::get() ) && !m_spDispatch)
+        return Any();
+    // XDirectInvocation seems to be an oracle replacement for XAutomationInvocation, however it is flawed especially wrt. assumptions about whether to invoke a
+    // Put or Get property, the implementation code has no business guessing that, it's up to the caller to decide that. Worse XDirectInvocation duplicates lots of code.
+    // XAutomationInvocation provides separate calls for put& get
+    // properties. Note: Currently the basic runtime doesn't call put properties directly, it should... after all the basic runtime should know whether it is calling a put or get property.
+    // For the moment for ease of merging we will let the XDirectInvoke and XAuthomationInvocation interfaces stay side by side (and for the moment at least I would prefer the basic
+    // runtime to call XAutomationInvocation instead of XDirectInvoke
+    return WeakImplHelper<XBridgeSupplier2,
+        XInitialization, XAutomationObject, XDefaultProperty, XDefaultMethod, XDirectInvocation, XAutomationInvocation >::queryInterface(t);
+}
+
+Reference<XIntrospectionAccess> SAL_CALL IUnknownWrapper::getIntrospection()
+{
+    Reference<XIntrospectionAccess> ret;
+
+    return ret;
+}
+
+Any SAL_CALL IUnknownWrapper::invokeGetProperty( const OUString& aPropertyName, const Sequence< Any >& aParams, Sequence< sal_Int16 >& aOutParamIndex, Sequence< Any >& aOutParam )
+{
+    Any aResult;
+    try
+    {
+        o2u_attachCurrentThread();
+        ITypeInfo * pInfo = getTypeInfo();
+        FuncDesc aDescGet(pInfo);
+        FuncDesc aDescPut(pInfo);
+        VarDesc aVarDesc(pInfo);
+        getPropDesc(aPropertyName, & aDescGet, & aDescPut, & aVarDesc);
+        if ( !aDescGet )
+        {
+            OUString msg("[automation bridge]Property \"" + aPropertyName +
+                "\" is not supported");
+            throw UnknownPropertyException(msg);
+        }
+        aResult = invokeWithDispIdComTlb( aDescGet, aPropertyName, aParams, aOutParamIndex, aOutParam );
+    }
+    catch ( const Exception& e )
+    {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw css::lang::WrappedTargetRuntimeException("[automation bridge] unexpected exception in "
+                "IUnknownWrapper::invokeGetProperty ! Message : \n " +
+                e.Message,
+                nullptr, anyEx );
+    }
+    return aResult;
+}
+
+Any SAL_CALL IUnknownWrapper::invokePutProperty( const OUString& aPropertyName, const Sequence< Any >& aParams, Sequence< sal_Int16 >& aOutParamIndex, Sequence< Any >& aOutParam )
+{
+    Any aResult;
+    try
+    {
+        o2u_attachCurrentThread();
+        ITypeInfo * pInfo = getTypeInfo();
+        FuncDesc aDescGet(pInfo);
+        FuncDesc aDescPut(pInfo);
+        VarDesc aVarDesc(pInfo);
+        getPropDesc(aPropertyName, & aDescGet, & aDescPut, & aVarDesc);
+        if ( !aDescPut )
+        {
+            OUString msg("[automation bridge]Property \"" + aPropertyName +
+                "\" is not supported");
+            throw UnknownPropertyException(msg);
+        }
+        aResult = invokeWithDispIdComTlb( aDescPut, aPropertyName, aParams, aOutParamIndex, aOutParam );
+    }
+    catch ( const Exception& e )
+    {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw css::lang::WrappedTargetRuntimeException("[automation bridge] unexpected exception in "
+                "IUnknownWrapper::invokePutProperty ! Message : \n" +
+                e.Message,
+                nullptr, anyEx );
+    }
+    return aResult;
+}
+
+
+Any SAL_CALL IUnknownWrapper::invoke( const OUString& aFunctionName,
+             const Sequence< Any >& aParams, Sequence< sal_Int16 >& aOutParamIndex,
+             Sequence< Any >& aOutParam )
+{
+    if ( ! m_spDispatch )
+    {
+        throw RuntimeException(
+            "[automation bridge] The object does not have an IDispatch interface");
+    }
+
+    Any ret;
+
+    try
+    {
+        o2u_attachCurrentThread();
+
+        TypeDescription methodDesc;
+        getMethodInfo(aFunctionName, methodDesc);
+        if( methodDesc.is())
+        {
+            ret = invokeWithDispIdUnoTlb(aFunctionName,
+                                         aParams,
+                                         aOutParamIndex,
+                                         aOutParam);
+        }
+        else
+        {
+            ret= invokeWithDispIdComTlb( aFunctionName,
+                                         aParams,
+                                         aOutParamIndex,
+                                         aOutParam);
+        }
+    }
+    catch (const IllegalArgumentException &)
+    {
+        throw;
+    }
+    catch (const CannotConvertException &)
+    {
+        throw;
+    }
+    catch (const BridgeRuntimeError & e)
+    {
+         throw RuntimeException(e.message);
+    }
+    catch (const Exception & e)
+    {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw css::lang::WrappedTargetRuntimeException("[automation bridge] unexpected exception in "
+                "IUnknownWrapper::invoke ! Message : \n" +
+                e.Message,
+                nullptr, anyEx );
+
+    }
+    catch(...)
+    {
+        throw RuntimeException("[automation bridge] unexpected exception in "
+                  "IUnknownWrapper::Invoke !");
+    }
+    return ret;
+}
+
+void SAL_CALL IUnknownWrapper::setValue( const OUString& aPropertyName,
+                 const Any& aValue )
+{
+    if ( ! m_spDispatch )
+    {
+        throw RuntimeException(
+            "[automation bridge] The object does not have an IDispatch interface");
+    }
+    try
+    {
+        o2u_attachCurrentThread();
+
+        ITypeInfo * pInfo = getTypeInfo();
+        FuncDesc aDescGet(pInfo);
+        FuncDesc aDescPut(pInfo);
+        VarDesc aVarDesc(pInfo);
+        getPropDesc(aPropertyName, & aDescGet, & aDescPut, & aVarDesc);
+        //check if there is such a property at all or if it is read only
+        if ( ! aDescPut && ! aDescGet && ! aVarDesc)
+        {
+            OUString msg("[automation bridge]Property \"" + aPropertyName +
+                         "\" is not supported");
+            throw UnknownPropertyException(msg);
+        }
+
+        if ( (! aDescPut && aDescGet)
+             || (aVarDesc && aVarDesc->wVarFlags == VARFLAG_FREADONLY) )
+        {
+            //read-only
+            SAL_WARN( "extensions.olebridge", "[automation bridge] Property " << aPropertyName << " is read-only");
+            // ignore silently
+            return;
+        }
+
+        HRESULT hr= S_OK;
+        DISPPARAMS dispparams;
+        CComVariant varArg;
+        CComVariant varRefArg;
+        CComVariant varResult;
+        ExcepInfo excepinfo;
+        unsigned int uArgErr;
+
+        // converting UNO value to OLE variant
+        DISPID dispidPut= DISPID_PROPERTYPUT;
+        dispparams.rgdispidNamedArgs = &dispidPut;
+        dispparams.cArgs = 1;
+        dispparams.cNamedArgs = 1;
+        dispparams.rgvarg = & varArg;
+
+        OSL_ASSERT(aDescPut || aVarDesc);
+
+        VARTYPE vt = 0;
+        DISPID dispid = 0;
+        INVOKEKIND invkind = INVOKE_PROPERTYPUT;
+        //determine the expected type, dispid, invoke kind (DISPATCH_PROPERTYPUT,
+        //DISPATCH_PROPERTYPUTREF)
+        if (aDescPut)
+        {
+            vt = getElementTypeDesc(& aDescPut->lprgelemdescParam[0].tdesc);
+            dispid = aDescPut->memid;
+            invkind = aDescPut->invkind;
+        }
+        else
+        {
+            vt = getElementTypeDesc( & aVarDesc->elemdescVar.tdesc);
+            dispid = aVarDesc->memid;
+            if (vt == VT_UNKNOWN || vt == VT_DISPATCH ||
+                (vt & VT_ARRAY) || (vt & VT_BYREF))
+            {
+                invkind = INVOKE_PROPERTYPUTREF;
+            }
+        }
+
+        // convert the uno argument
+        if (vt & VT_BYREF)
+        {
+            anyToVariant( & varRefArg, aValue, ::sal::static_int_cast< VARTYPE, int >( vt ^ VT_BYREF ) );
+            varArg.vt = vt;
+            if( (vt & VT_TYPEMASK) == VT_VARIANT)
+                varArg.byref = & varRefArg;
+            else if ((vt & VT_TYPEMASK) == VT_DECIMAL)
+                varArg.byref = & varRefArg.decVal;
+            else
+                varArg.byref = & varRefArg.byref;
+        }
+        else
+        {
+            anyToVariant(& varArg, aValue, vt);
+        }
+        // call to IDispatch
+        hr = m_spDispatch->Invoke(dispid, IID_NULL, LOCALE_USER_DEFAULT, ::sal::static_int_cast< WORD, INVOKEKIND >( invkind ),
+                                 &dispparams, & varResult, & excepinfo, &uArgErr);
+
+        // lookup error code
+        switch (hr)
+        {
+        case S_OK:
+            break;
+        case DISP_E_BADPARAMCOUNT:
+            throw RuntimeException();
+            break;
+        case DISP_E_BADVARTYPE:
+            throw RuntimeException();
+            break;
+        case DISP_E_EXCEPTION:
+            throw InvocationTargetException();
+            break;
+        case DISP_E_MEMBERNOTFOUND:
+            throw UnknownPropertyException();
+            break;
+        case DISP_E_NONAMEDARGS:
+            throw RuntimeException();
+            break;
+        case DISP_E_OVERFLOW:
+            throw CannotConvertException("call to OLE object failed", static_cast<XInterface*>(
+                                             static_cast<XWeak*>(this)), TypeClass_UNKNOWN, FailReason::OUT_OF_RANGE, uArgErr);
+            break;
+        case DISP_E_PARAMNOTFOUND:
+            throw IllegalArgumentException("call to OLE object failed", static_cast<XInterface*>(
+                                            static_cast<XWeak*>(this)), ::sal::static_int_cast< sal_Int16, unsigned int >( uArgErr )) ;
+            break;
+        case DISP_E_TYPEMISMATCH:
+            throw CannotConvertException("call to OLE object failed", static_cast<XInterface*>(
+                                             static_cast<XWeak*>(this)), TypeClass_UNKNOWN, FailReason::UNKNOWN, ::sal::static_int_cast< sal_Int16, unsigned int >( uArgErr ));
+            break;
+        case DISP_E_UNKNOWNINTERFACE:
+            throw RuntimeException();
+            break;
+        case DISP_E_UNKNOWNLCID:
+            throw RuntimeException();
+            break;
+        case DISP_E_PARAMNOTOPTIONAL:
+            throw CannotConvertException("call to OLE object failed",static_cast<XInterface*>(
+                                             static_cast<XWeak*>(this)) , TypeClass_UNKNOWN, FailReason::NO_DEFAULT_AVAILABLE, uArgErr);
+            break;
+        default:
+            throw  RuntimeException();
+            break;
+        }
+    }
+    catch (const CannotConvertException &)
+    {
+        throw;
+    }
+    catch (const UnknownPropertyException &)
+    {
+        throw;
+    }
+    catch (const BridgeRuntimeError& e)
+    {
+        throw RuntimeException(e.message);
+    }
+    catch (const Exception & e)
+    {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw css::lang::WrappedTargetRuntimeException("[automation bridge] unexpected exception in "
+                "IUnknownWrapper::setValue ! Message : \n" +
+                e.Message,
+                nullptr, anyEx );
+
+    }
+    catch (...)
+    {
+        throw RuntimeException(
+            "[automation bridge] unexpected exception in "
+            "IUnknownWrapper::setValue !");
+    }
+}
+
+Any SAL_CALL IUnknownWrapper::getValue( const OUString& aPropertyName )
+{
+    if ( ! m_spDispatch )
+    {
+        throw RuntimeException(
+            "[automation bridge] The object does not have an IDispatch interface");
+    }
+    Any ret;
+    try
+    {
+        o2u_attachCurrentThread();
+        ITypeInfo * pInfo = getTypeInfo();
+        // I was going to implement an XServiceInfo interface to allow the type
+        // of the automation object to be exposed... but it seems
+        // from looking at comments in the code that it is possible for
+        // this object to actually wrap a UNO object ( I guess if automation is
+        // used from MSO to create Openoffice objects ) Therefore, those objects
+        // will more than likely already have their own XServiceInfo interface.
+        // Instead here I chose a name that should be illegal both in COM and
+        // UNO ( from an IDL point of view ) therefore I think this is a safe
+        // hack
+        if ( aPropertyName == "$GetTypeName" )
+        {
+            if ( pInfo && m_sTypeName.getLength() == 0 )
+            {
+                m_sTypeName = "IDispatch";
+                CComBSTR sName;
+
+                if ( SUCCEEDED( pInfo->GetDocumentation( -1, &sName, nullptr, nullptr, nullptr  ) ) )
+                {
+                    OUString sTmp( o3tl::toU(LPCOLESTR(sName)));
+                    if ( sTmp.startsWith("_") )
+                       sTmp = sTmp.copy(1);
+                    // do we own the memory for pTypeLib, msdn doc is vague
+                    // I'll assume we do
+                    CComPtr< ITypeLib > pTypeLib;
+                    unsigned int index;
+                    if ( SUCCEEDED(  pInfo->GetContainingTypeLib(  &pTypeLib.p, &index )) )
+                    {
+                        if ( SUCCEEDED( pTypeLib->GetDocumentation( -1, &sName, nullptr, nullptr, nullptr  ) ) )
+                        {
+                            OUString sLibName( o3tl::toU(LPCOLESTR(sName)));
+                            m_sTypeName = sLibName + "." + sTmp;
+
+                        }
+                    }
+                }
+
+            }
+            ret <<= m_sTypeName;
+            return ret;
+        }
+        FuncDesc aDescGet(pInfo);
+        FuncDesc aDescPut(pInfo);
+        VarDesc aVarDesc(pInfo);
+        getPropDesc(aPropertyName, & aDescGet, & aDescPut, & aVarDesc);
+        if ( ! aDescGet && ! aDescPut && ! aVarDesc)
+        {
+            //property not found
+            OUString msg("[automation bridge]Property \"" + aPropertyName +
+                         "\" is not supported");
+            throw UnknownPropertyException(msg);
+        }
+        // write-only should not be possible
+        OSL_ASSERT(  aDescGet  || ! aDescPut);
+
+        HRESULT hr;
+        DISPPARAMS dispparams = {nullptr, nullptr, 0, 0};
+        CComVariant varResult;
+        ExcepInfo excepinfo;
+        unsigned int uArgErr;
+        DISPID dispid;
+        if (aDescGet)
+            dispid = aDescGet->memid;
+        else if (aVarDesc)
+            dispid = aVarDesc->memid;
+        else
+            dispid = aDescPut->memid;
+
+        hr = m_spDispatch->Invoke(dispid,
+                                 IID_NULL,
+                                 LOCALE_USER_DEFAULT,
+                                 DISPATCH_PROPERTYGET,
+                                 &dispparams,
+                                 &varResult,
+                                 &excepinfo,
+                                 &uArgErr);
+
+        // converting return value and out parameter back to UNO
+        if (hr == S_OK)
+        {
+            // If the com object implements uno interfaces then we have
+            // to convert the attribute into the expected type.
+            TypeDescription attrInfo;
+            getAttributeInfo(aPropertyName, attrInfo);
+            if( attrInfo.is() )
+                variantToAny( &varResult, ret, Type( attrInfo.get()->pWeakRef));
+            else
+                variantToAny(&varResult, ret);
+        }
+
+        // lookup error code
+        switch (hr)
+        {
+        case S_OK:
+            break;
+        case DISP_E_BADPARAMCOUNT:
+        case DISP_E_BADVARTYPE:
+        case DISP_E_EXCEPTION:
+            throw RuntimeException(OUString(o3tl::toU(excepinfo.bstrDescription)));
+            break;
+        case DISP_E_MEMBERNOTFOUND:
+            throw UnknownPropertyException(OUString(o3tl::toU(excepinfo.bstrDescription)));
+            break;
+        default:
+            throw RuntimeException(OUString(o3tl::toU(excepinfo.bstrDescription)));
+            break;
+        }
+    }
+    catch ( const UnknownPropertyException& )
+    {
+        throw;
+    }
+    catch (const BridgeRuntimeError& e)
+    {
+        throw RuntimeException(e.message);
+    }
+    catch (const Exception & e)
+    {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw css::lang::WrappedTargetRuntimeException("[automation bridge] unexpected exception in "
+                "IUnknownWrapper::getValue ! Message : \n" +
+                e.Message,
+                nullptr, anyEx );
+    }
+    catch (...)
+    {
+        throw RuntimeException(
+            "[automation bridge] unexpected exception in "
+            "IUnknownWrapper::getValue !");
+    }
+    return ret;
+}
+
+sal_Bool SAL_CALL IUnknownWrapper::hasMethod( const OUString& aName )
+{
+    if ( ! m_spDispatch )
+    {
+        throw RuntimeException(
+            "[automation bridge] The object does not have an IDispatch interface");
+    }
+    bool ret = false;
+
+    try
+    {
+        o2u_attachCurrentThread();
+        ITypeInfo* pInfo = getTypeInfo();
+        FuncDesc aDesc(pInfo);
+        getFuncDesc(aName, & aDesc);
+        // Automation properties can have arguments. Those are treated as methods and
+        //are called through XInvocation::invoke.
+        if ( ! aDesc)
+        {
+            FuncDesc aDescGet(pInfo);
+            FuncDesc aDescPut(pInfo);
+            VarDesc aVarDesc(pInfo);
+            getPropDesc( aName, & aDescGet, & aDescPut, & aVarDesc);
+            if ((aDescGet && aDescGet->cParams > 0)
+                || (aDescPut && aDescPut->cParams > 0))
+                ret = true;
+        }
+        else
+            ret = true;
+    }
+    catch (const BridgeRuntimeError& e)
+    {
+        throw RuntimeException(e.message);
+    }
+    catch (const Exception & e)
+    {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw css::lang::WrappedTargetRuntimeException("[automation bridge] unexpected exception in "
+                "IUnknownWrapper::hasMethod ! Message : \n" +
+                e.Message,
+                nullptr, anyEx );
+    }
+    catch (...)
+    {
+        throw RuntimeException("[automation bridge] unexpected exception in "
+            "IUnknownWrapper::hasMethod !");
+    }
+    return ret;
+}
+
+sal_Bool SAL_CALL IUnknownWrapper::hasProperty( const OUString& aName )
+{
+    if ( ! m_spDispatch )
+    {
+        throw RuntimeException("[automation bridge] The object does not have an "
+            "IDispatch interface");
+    }
+    bool ret = false;
+    try
+    {
+        o2u_attachCurrentThread();
+
+        ITypeInfo * pInfo = getTypeInfo();
+        FuncDesc aDescGet(pInfo);
+        FuncDesc aDescPut(pInfo);
+        VarDesc aVarDesc(pInfo);
+        getPropDesc(aName, & aDescGet, & aDescPut, & aVarDesc);
+
+    // we should probably just check the func kind
+        // basic has been modified to handle properties ( 'get' ) props at
+    // least with parameters
+    // additionally you can call invoke(Get|Set)Property on the bridge
+        // you can determine if a property has parameter is hasMethod
+    // returns true for the name
+        if (aVarDesc
+            || aDescPut
+            || aDescGet )
+        {
+            ret = true;
+        }
+    }
+    catch (const BridgeRuntimeError& e)
+    {
+        throw RuntimeException(e.message);
+    }
+    catch (const Exception & e)
+    {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw css::lang::WrappedTargetRuntimeException("[automation bridge] unexpected exception in "
+                "IUnknownWrapper::hasProperty ! Message : \n" +
+                e.Message,
+                nullptr, anyEx );
+
+    }
+    catch (...)
+    {
+        throw RuntimeException("[automation bridge] unexpected exception in "
+            "IUnknownWrapper::hasProperty !");
+    }
+    return ret;
+}
+
+Any SAL_CALL IUnknownWrapper::createBridge( const Any& modelDepObject,
+                const Sequence< sal_Int8 >& /*aProcessId*/, sal_Int16 sourceModelType,
+                 sal_Int16 destModelType )
+{
+    Any ret;
+    o2u_attachCurrentThread();
+
+    if (
+        (sourceModelType == UNO) &&
+        (destModelType == OLE) &&
+        (modelDepObject.getValueTypeClass() == TypeClass_INTERFACE)
+       )
+    {
+        Reference<XInterface> xInt( *static_cast<XInterface* const *>(modelDepObject.getValue()));
+        Reference<XInterface> xSelf( static_cast<OWeakObject*>(this));
+
+        if (xInt == xSelf)
+        {
+            VARIANT* pVariant = static_cast<VARIANT*>(CoTaskMemAlloc(sizeof(VARIANT)));
+
+            VariantInit(pVariant);
+            if (m_bOriginalDispatch)
+            {
+                pVariant->vt = VT_DISPATCH;
+                pVariant->pdispVal = m_spDispatch;
+                pVariant->pdispVal->AddRef();
+            }
+            else
+            {
+                pVariant->vt = VT_UNKNOWN;
+                pVariant->punkVal = m_spUnknown;
+                pVariant->punkVal->AddRef();
+            }
+
+            ret.setValue(static_cast<void*>(&pVariant), cppu::UnoType<sal_uIntPtr>::get());
+        }
+    }
+
+    return ret;
+}
+/** @internal
+    @exception IllegalArgumentException
+    @exception CannotConvertException
+    @exception InvocationTargetException
+    @RuntimeException
+*/
+Any  IUnknownWrapper::invokeWithDispIdUnoTlb(const OUString& sFunctionName,
+                                             const Sequence< Any >& Params,
+                                             Sequence< sal_Int16 >& OutParamIndex,
+                                             Sequence< Any >& OutParam)
+{
+    Any ret;
+    HRESULT hr= S_OK;
+
+    sal_Int32 parameterCount= Params.getLength();
+    sal_Int32 outParameterCount= 0;
+    typelib_InterfaceMethodTypeDescription* pMethod= nullptr;
+    TypeDescription methodDesc;
+    getMethodInfo(sFunctionName, methodDesc);
+
+    // We need to know whether the IDispatch is from a JScript object.
+    // Then out and in/out parameters have to be treated differently than
+    // with common COM objects.
+    bool bJScriptObject= isJScriptObject();
+    std::unique_ptr<CComVariant[]> sarParams;
+    std::unique_ptr<CComVariant[]> sarParamsRef;
+    CComVariant *pVarParams= nullptr;
+    CComVariant *pVarParamsRef= nullptr;
+    bool bConvRet= true;
+
+    if( methodDesc.is())
+    {
+        pMethod = reinterpret_cast<typelib_InterfaceMethodTypeDescription*>(methodDesc.get());
+        parameterCount = pMethod->nParams;
+        // Create the Array for the array being passed in DISPPARAMS
+        // the array also contains the outparameter (but not the values)
+        if( pMethod->nParams > 0)
+        {
+            sarParams.reset(new CComVariant[ parameterCount]);
+            pVarParams = sarParams.get();
+        }
+
+        // Create the Array for the out an in/out parameter. These values
+        // are referenced by the VT_BYREF VARIANTs in DISPPARAMS.
+        // We need to find out the number of out and in/out parameter.
+        for( sal_Int32 i=0; i < parameterCount; i++)
+        {
+            if( pMethod->pParams[i].bOut)
+                outParameterCount++;
+        }
+
+        if( !bJScriptObject)
+        {
+            sarParamsRef.reset(new CComVariant[outParameterCount]);
+            pVarParamsRef = sarParamsRef.get();
+            // build up the parameters for IDispatch::Invoke
+            sal_Int32 outParamIndex=0;
+            int i = 0;
+            try
+            {
+                for( i= 0; i < parameterCount; i++)
+                {
+                    // In parameter
+                    if( pMethod->pParams[i].bIn && ! pMethod->pParams[i].bOut)
+                    {
+                        anyToVariant( &pVarParams[parameterCount - i -1], Params.getConstArray()[i]);
+                    }
+                    // Out parameter + in/out parameter
+                    else if( pMethod->pParams[i].bOut )
+                    {
+                        CComVariant var;
+                        if(pMethod->pParams[i].bIn)
+                        {
+                            anyToVariant( & var,Params[i]);
+                            pVarParamsRef[outParamIndex] = var;
+                        }
+
+                        switch( pMethod->pParams[i].pTypeRef->eTypeClass)
+                        {
+                        case typelib_TypeClass_INTERFACE:
+                        case typelib_TypeClass_STRUCT:
+                            if( ! pMethod->pParams[i].bIn)
+                            {
+                                pVarParamsRef[ outParamIndex].vt= VT_DISPATCH;
+                                pVarParamsRef[ outParamIndex].pdispVal= nullptr;
+                            }
+                            pVarParams[parameterCount - i -1].vt = VT_DISPATCH | VT_BYREF;
+                            pVarParams[parameterCount - i -1].ppdispVal= &pVarParamsRef[outParamIndex].pdispVal;
+                            break;
+                        case typelib_TypeClass_ENUM:
+                        case typelib_TypeClass_LONG:
+                        case typelib_TypeClass_UNSIGNED_LONG:
+                            if( ! pMethod->pParams[i].bIn)
+                            {
+                                pVarParamsRef[ outParamIndex].vt = VT_I4;
+                                pVarParamsRef[ outParamIndex].lVal = 0;
+                            }
+                            pVarParams[parameterCount - i -1].vt = VT_I4 | VT_BYREF;
+                            pVarParams[parameterCount - i -1].plVal= &pVarParamsRef[outParamIndex].lVal;
+                            break;
+                        case typelib_TypeClass_SEQUENCE:
+                            if( ! pMethod->pParams[i].bIn)
+                            {
+                                pVarParamsRef[ outParamIndex].vt = VT_ARRAY| VT_VARIANT;
+                                pVarParamsRef[ outParamIndex].parray= nullptr;
+                            }
+                            pVarParams[parameterCount - i -1].vt = VT_ARRAY| VT_BYREF | VT_VARIANT;
+                            pVarParams[parameterCount - i -1].pparray= &pVarParamsRef[outParamIndex].parray;
+                            break;
+                        case typelib_TypeClass_ANY:
+                            if( ! pMethod->pParams[i].bIn)
+                            {
+                                pVarParamsRef[ outParamIndex].vt = VT_EMPTY;
+                                pVarParamsRef[ outParamIndex].lVal = 0;
+                            }
+                            pVarParams[parameterCount - i -1].vt = VT_VARIANT | VT_BYREF;
+                            pVarParams[parameterCount - i -1].pvarVal = &pVarParamsRef[outParamIndex];
+                            break;
+                        case typelib_TypeClass_BOOLEAN:
+                            if( ! pMethod->pParams[i].bIn)
+                            {
+                                pVarParamsRef[ outParamIndex].vt = VT_BOOL;
+                                pVarParamsRef[ outParamIndex].boolVal = 0;
+                            }
+                            pVarParams[parameterCount - i -1].vt = VT_BOOL| VT_BYREF;
+                            pVarParams[parameterCount - i -1].pboolVal =
+                                & pVarParamsRef[outParamIndex].boolVal;
+                            break;
+
+                        case typelib_TypeClass_STRING:
+                            if( ! pMethod->pParams[i].bIn)
+                            {
+                                pVarParamsRef[ outParamIndex].vt = VT_BSTR;
+                                pVarParamsRef[ outParamIndex].bstrVal= nullptr;
+                            }
+                            pVarParams[parameterCount - i -1].vt = VT_BSTR| VT_BYREF;
+                            pVarParams[parameterCount - i -1].pbstrVal=
+                                & pVarParamsRef[outParamIndex].bstrVal;
+                            break;
+
+                        case typelib_TypeClass_FLOAT:
+                            if( ! pMethod->pParams[i].bIn)
+                            {
+                                pVarParamsRef[ outParamIndex].vt = VT_R4;
+                                pVarParamsRef[ outParamIndex].fltVal= 0;
+                            }
+                            pVarParams[parameterCount - i -1].vt = VT_R4| VT_BYREF;
+                            pVarParams[parameterCount - i -1].pfltVal =
+                                & pVarParamsRef[outParamIndex].fltVal;
+                            break;
+                        case typelib_TypeClass_DOUBLE:
+                            if( ! pMethod->pParams[i].bIn)
+                            {
+                                pVarParamsRef[ outParamIndex].vt = VT_R8;
+                                pVarParamsRef[ outParamIndex].dblVal= 0;
+                            }
+                            pVarParams[parameterCount - i -1].vt = VT_R8| VT_BYREF;
+                            pVarParams[parameterCount - i -1].pdblVal=
+                                & pVarParamsRef[outParamIndex].dblVal;
+                            break;
+                        case typelib_TypeClass_BYTE:
+                            if( ! pMethod->pParams[i].bIn)
+                            {
+                                pVarParamsRef[ outParamIndex].vt = VT_UI1;
+                                pVarParamsRef[ outParamIndex].bVal= 0;
+                            }
+                            pVarParams[parameterCount - i -1].vt = VT_UI1| VT_BYREF;
+                            pVarParams[parameterCount - i -1].pbVal=
+                                & pVarParamsRef[outParamIndex].bVal;
+                            break;
+                        case typelib_TypeClass_CHAR:
+                        case typelib_TypeClass_SHORT:
+                        case typelib_TypeClass_UNSIGNED_SHORT:
+                            if( ! pMethod->pParams[i].bIn)
+                            {
+                                pVarParamsRef[ outParamIndex].vt = VT_I2;
+                                pVarParamsRef[ outParamIndex].iVal = 0;
+                            }
+                            pVarParams[parameterCount - i -1].vt = VT_I2| VT_BYREF;
+                            pVarParams[parameterCount - i -1].piVal=
+                                & pVarParamsRef[outParamIndex].iVal;
+                            break;
+
+                        default:
+                            if( ! pMethod->pParams[i].bIn)
+                            {
+                                pVarParamsRef[ outParamIndex].vt = VT_EMPTY;
+                                pVarParamsRef[ outParamIndex].lVal = 0;
+                            }
+                            pVarParams[parameterCount - i -1].vt = VT_VARIANT | VT_BYREF;
+                            pVarParams[parameterCount - i -1].pvarVal =
+                                & pVarParamsRef[outParamIndex];
+                        }
+                        outParamIndex++;
+                    } // end else if
+                } // end for
+            }
+            catch (IllegalArgumentException & e)
+            {
+                e.ArgumentPosition = ::sal::static_int_cast< sal_Int16, int >( i );
+                throw;
+            }
+            catch (CannotConvertException & e)
+            {
+                e.ArgumentIndex = i;
+                throw;
+            }
+        }
+        else // it is a JScriptObject
+        {
+            int i = 0;
+            try
+            {
+                for( ; i< parameterCount; i++)
+                {
+                    // In parameter
+                    if( pMethod->pParams[i].bIn && ! pMethod->pParams[i].bOut)
+                    {
+                        anyToVariant( &pVarParams[parameterCount - i -1], Params.getConstArray()[i]);
+                    }
+                    // Out parameter + in/out parameter
+                    else if( pMethod->pParams[i].bOut )
+                    {
+                        CComObject<JScriptOutParam>* pParamObject;
+                        if( !SUCCEEDED( CComObject<JScriptOutParam>::CreateInstance( &pParamObject)))
+                        {
+                            throw BridgeRuntimeError(
+                                      "[automation bridge]IUnknownWrapper::"
+                                      "invokeWithDispIdUnoTlb\n"
+                                      "Could not create out parameter at index: " +
+                                OUString::number(static_cast<sal_Int32>(i)));
+                        }
+
+                        CComPtr<IUnknown> pUnk(pParamObject->GetUnknown());
+                        CComQIPtr<IDispatch> pDisp( pUnk);
+
+                        pVarParams[ parameterCount - i -1].vt= VT_DISPATCH;
+                        pVarParams[ parameterCount - i -1].pdispVal= pDisp;
+                        pVarParams[ parameterCount - i -1].pdispVal->AddRef();
+                        // if the param is in/out then put the parameter on index 0
+                        if( pMethod->pParams[i].bIn ) // in / out
+                        {
+                            CComVariant varParam;
+                            anyToVariant( &varParam, Params.getConstArray()[i]);
+                            CComDispatchDriver dispDriver( pDisp);
+                            if(FAILED( dispDriver.PutPropertyByName( L"0", &varParam)))
+                                throw BridgeRuntimeError(
+                                    "[automation bridge]IUnknownWrapper::"
+                                    "invokeWithDispIdUnoTlb\n"
+                                    "Could not set property \"0\" for the in/out "
+                                    "param!");
+
+                        }
+                    }
+                }
+            }
+            catch (IllegalArgumentException & e)
+            {
+                e.ArgumentPosition = ::sal::static_int_cast< sal_Int16, int >( i );
+                throw;
+            }
+            catch (CannotConvertException & e)
+            {
+                e.ArgumentIndex = i;
+                throw;
+            }
+        }
+    }
+    // No type description Available, that is we have to deal with a COM component,
+    // that does not implements UNO interfaces ( IDispatch based)
+    else
+    {
+        //We should not run into this block, because invokeWithDispIdComTlb should
+        //have been called instead.
+        OSL_ASSERT(false);
+    }
+
+
+    CComVariant     varResult;
+    ExcepInfo       excepinfo;
+    unsigned int    uArgErr;
+    DISPPARAMS dispparams= { pVarParams, nullptr, static_cast<UINT>(parameterCount), 0};
+
+    // Get the DISPID
+    FuncDesc aDesc(getTypeInfo());
+    getFuncDesc(sFunctionName, & aDesc);
+    // invoking OLE method
+    hr = m_spDispatch->Invoke(aDesc->memid,
+                             IID_NULL,
+                             LOCALE_USER_DEFAULT,
+                             DISPATCH_METHOD,
+                             &dispparams,
+                             &varResult,
+                             &excepinfo,
+                             &uArgErr);
+
+    // converting return value and out parameter back to UNO
+    if (hr == S_OK)
+    {
+        if( outParameterCount && pMethod)
+        {
+            OutParamIndex.realloc( outParameterCount);
+            auto pOutParamIndex = OutParamIndex.getArray();
+            OutParam.realloc( outParameterCount);
+            auto pOutParam = OutParam.getArray();
+            sal_Int32 outIndex=0;
+            int i = 0;
+            try
+            {
+                for( ; i < parameterCount; i++)
+                {
+                    if( pMethod->pParams[i].bOut )
+                    {
+                        pOutParamIndex[outIndex]= static_cast<sal_Int16>(i);
+                        Any outAny;
+                        if( !bJScriptObject)
+                        {
+                            variantToAny( &pVarParamsRef[outIndex], outAny,
+                                        Type(pMethod->pParams[i].pTypeRef), false);
+                            pOutParam[outIndex++]= outAny;
+                        }
+                        else //JScriptObject
+                        {
+                            if( pVarParams[i].vt == VT_DISPATCH)
+                            {
+                                CComDispatchDriver pDisp( pVarParams[i].pdispVal);
+                                if( pDisp)
+                                {
+                                    CComVariant varOut;
+                                    if( SUCCEEDED( pDisp.GetPropertyByName( L"0", &varOut)))
+                                    {
+                                        variantToAny( &varOut, outAny,
+                                                    Type(pMethod->pParams[parameterCount - 1 - i].pTypeRef), false);
+                                        pOutParam[outParameterCount - 1 - outIndex++]= outAny;
+                                    }
+                                    else
+                                        bConvRet= false;
+                                }
+                                else
+                                    bConvRet= false;
+                            }
+                            else
+                                bConvRet= false;
+                        }
+                    }
+                    if( !bConvRet) break;
+                }
+            }
+            catch(IllegalArgumentException & e)
+            {
+                e.ArgumentPosition = ::sal::static_int_cast< sal_Int16, int >( i );
+                throw;
+            }
+            catch(CannotConvertException & e)
+            {
+                e.ArgumentIndex = i;
+                throw;
+            }
+        }
+        // return value, no type information available
+        if ( bConvRet)
+        {
+            try
+            {
+                if( pMethod )
+                    variantToAny(&varResult, ret, Type( pMethod->pReturnTypeRef), false);
+                else
+                    variantToAny(&varResult, ret, false);
+            }
+            catch (IllegalArgumentException & e)
+            {
+                e.Message =
+                    "[automation bridge]IUnknownWrapper::invokeWithDispIdUnoTlb\n"
+                    "Could not convert return value! \n Message: \n" + e.Message;
+                throw;
+            }
+            catch (CannotConvertException & e)
+            {
+                e.Message =
+                    "[automation bridge]IUnknownWrapper::invokeWithDispIdUnoTlb\n"
+                    "Could not convert return value! \n Message: \n" + e.Message;
+                throw;
+            }
+        }
+    }
+
+    if( !bConvRet) // conversion of return or out parameter failed
+        throw CannotConvertException("Call to COM object failed. Conversion of return or out value failed",
+                                      Reference<XInterface>( static_cast<XWeak*>(this), UNO_QUERY   ), TypeClass_UNKNOWN,
+                                      FailReason::UNKNOWN, 0);// lookup error code
+    // conversion of return or out parameter failed
+    switch (hr)
+    {
+    case S_OK:
+        break;
+    case DISP_E_BADPARAMCOUNT:
+        throw IllegalArgumentException();
+        break;
+    case DISP_E_BADVARTYPE:
+        throw RuntimeException();
+        break;
+    case DISP_E_EXCEPTION:
+        throw InvocationTargetException();
+        break;
+    case DISP_E_MEMBERNOTFOUND:
+        throw IllegalArgumentException();
+        break;
+    case DISP_E_NONAMEDARGS:
+        throw IllegalArgumentException();
+        break;
+    case DISP_E_OVERFLOW:
+        throw CannotConvertException("call to OLE object failed", static_cast<XInterface*>(
+                                         static_cast<XWeak*>(this)), TypeClass_UNKNOWN, FailReason::OUT_OF_RANGE, uArgErr);
+        break;
+    case DISP_E_PARAMNOTFOUND:
+        throw IllegalArgumentException("call to OLE object failed", static_cast<XInterface*>(
+                                           static_cast<XWeak*>(this)), ::sal::static_int_cast< sal_Int16, unsigned int >( uArgErr ));
+        break;
+    case DISP_E_TYPEMISMATCH:
+        throw CannotConvertException("call to OLE object failed",static_cast<XInterface*>(
+                                         static_cast<XWeak*>(this)) , TypeClass_UNKNOWN, FailReason::UNKNOWN, uArgErr);
+        break;
+    case DISP_E_UNKNOWNINTERFACE:
+        throw RuntimeException() ;
+        break;
+    case DISP_E_UNKNOWNLCID:
+        throw RuntimeException() ;
+        break;
+    case DISP_E_PARAMNOTOPTIONAL:
+        throw CannotConvertException("call to OLE object failed", static_cast<XInterface*>(
+                                         static_cast<XWeak*>(this)), TypeClass_UNKNOWN, FailReason::NO_DEFAULT_AVAILABLE, uArgErr);
+                break;
+    default:
+        throw RuntimeException();
+        break;
+    }
+
+    return ret;
+}
+
+
+// XInitialization
+void SAL_CALL IUnknownWrapper::initialize( const Sequence< Any >& aArguments )
+{
+    // 1.parameter is IUnknown
+    // 2.parameter is a boolean which indicates if the COM pointer was an IUnknown or IDispatch
+    // 3.parameter is a Sequence<Type>
+    o2u_attachCurrentThread();
+    OSL_ASSERT(aArguments.getLength() == 3);
+
+    m_spUnknown= *static_cast<IUnknown* const *>(aArguments[0].getValue());
+    m_spUnknown.QueryInterface( & m_spDispatch.p);
+
+    aArguments[1] >>= m_bOriginalDispatch;
+    aArguments[2] >>= m_seqTypes;
+
+    ITypeInfo* pType = nullptr;
+    try
+    {
+        // a COM object implementation that has no TypeInfo is still a legal COM object;
+        // such objects can at least be transported through UNO using the bridge
+        // so we should allow to create wrappers for them as well
+        pType = getTypeInfo();
+    }
+    catch( const BridgeRuntimeError& )
+    {}
+    catch( const Exception& )
+    {}
+
+    if ( pType )
+    {
+        try
+        {
+            // Get Default member
+            CComBSTR defaultMemberName;
+            if ( SUCCEEDED( pType->GetDocumentation(0, &defaultMemberName, nullptr, nullptr, nullptr ) ) )
+            {
+                OUString usName(o3tl::toU(LPCOLESTR(defaultMemberName)));
+                FuncDesc aDescGet(pType);
+                FuncDesc aDescPut(pType);
+                VarDesc aVarDesc(pType);
+                // see if this is a property first ( more likely to be a property then a method )
+                getPropDesc( usName, & aDescGet, & aDescPut, & aVarDesc);
+
+                if ( !aDescGet && !aDescPut )
+                {
+                    getFuncDesc( usName, &aDescGet );
+                    if ( !aDescGet )
+                        throw BridgeRuntimeError( "[automation bridge]IUnknownWrapper::initialize() Failed to get Function or Property desc. for " + usName );
+                }
+                // now for some funny heuristics to make basic understand what to do
+                // a single aDescGet ( that doesn't take any params ) would be
+                // a read only ( defaultmember ) property e.g. this object
+                // should implement XDefaultProperty
+                // a single aDescGet ( that *does* ) take params is basically a
+                // default method e.g. implement XDefaultMethod
+
+                // a DescPut ( I guess we only really support a default param with '1' param ) as a setValue ( but I guess we can leave it through, the object will fail if we don't get it right anyway )
+                if ( aDescPut || ( aDescGet && aDescGet->cParams == 0 ) )
+                    m_bHasDfltProperty = true;
+                if ( aDescGet->cParams > 0 )
+                    m_bHasDfltMethod = true;
+                if ( m_bHasDfltProperty || m_bHasDfltMethod )
+                    m_sDefaultMember = usName;
+            }
+        }
+        catch ( const BridgeRuntimeError & e )
+        {
+            throw RuntimeException( e.message );
+        }
+        catch( const Exception& e )
+        {
+            css::uno::Any anyEx = cppu::getCaughtException();
+            throw css::lang::WrappedTargetRuntimeException(
+                    "[automation bridge] unexpected exception in IUnknownWrapper::initialize() error message: \n" + e.Message,
+                    nullptr, anyEx );
+        }
+    }
+}
+
+
+// XDirectInvocation
+uno::Any SAL_CALL IUnknownWrapper::directInvoke( const OUString& aName, const uno::Sequence< uno::Any >& aParams )
+{
+    Any aResult;
+
+    if ( !m_spDispatch )
+    {
+        throw RuntimeException(
+            "[automation bridge] The object does not have an IDispatch interface");
+    }
+
+    o2u_attachCurrentThread();
+    DISPID dispid;
+    if ( !getDispid( aName, &dispid ) )
+        throw IllegalArgumentException(
+            "[automation bridge] The object does not have a function or property "
+            + aName, Reference<XInterface>(), 0);
+
+    CComVariant     varResult;
+    ExcepInfo       excepinfo;
+    unsigned int    uArgErr = 0;
+    INVOKEKIND pInvkinds[2];
+    pInvkinds[0] = INVOKE_FUNC;
+    pInvkinds[1] = aParams.getLength() ? INVOKE_PROPERTYPUT : INVOKE_PROPERTYGET;
+    HRESULT hInvRes = E_FAIL;
+
+    // try Invoke first, if it does not work, try put/get property
+    for ( sal_Int32 nStep = 0; FAILED( hInvRes ) && nStep < 2; nStep++ )
+    {
+        DISPPARAMS      dispparams = {nullptr, nullptr, 0, 0};
+
+        std::unique_ptr<DISPID[]> arDispidNamedArgs;
+        std::unique_ptr<CComVariant[]> ptrArgs;
+        std::unique_ptr<CComVariant[]> ptrRefArgs; // referenced arguments
+        CComVariant * arArgs = nullptr;
+        CComVariant * arRefArgs = nullptr;
+
+        dispparams.cArgs = aParams.getLength();
+
+        // Determine the number of named arguments
+        for ( uno::Any const & any : aParams )
+            if ( any.getValueType() == cppu::UnoType<NamedArgument>::get() )
+                dispparams.cNamedArgs ++;
+
+        // fill the named arguments
+        if ( dispparams.cNamedArgs > 0
+          && ( dispparams.cNamedArgs != 1 || pInvkinds[nStep] != INVOKE_PROPERTYPUT ) )
+        {
+            int nSizeAr = dispparams.cNamedArgs + 1;
+            if ( pInvkinds[nStep] == INVOKE_PROPERTYPUT )
+                nSizeAr = dispparams.cNamedArgs;
+
+            std::unique_ptr<OLECHAR*[]> saNames(new OLECHAR*[nSizeAr]);
+            OLECHAR ** pNames = saNames.get();
+            pNames[0] = const_cast<OLECHAR*>(o3tl::toW(aName.getStr()));
+
+            int cNamedArg = 0;
+            for ( size_t nInd = 0; nInd < dispparams.cArgs; nInd++ )
+            {
+                if (auto v = o3tl::tryAccess<NamedArgument>(aParams[nInd]))
+                {
+                    const NamedArgument& arg = *v;
+
+                    //We put the parameter names in reverse order into the array,
+                    //so we can use the DISPID array for DISPPARAMS::rgdispidNamedArgs
+                    //The first name in the array is the method name
+                    pNames[nSizeAr - 1 - cNamedArg++] = const_cast<OLECHAR*>(o3tl::toW(arg.Name.getStr()));
+                }
+            }
+
+            arDispidNamedArgs.reset( new DISPID[nSizeAr] );
+            HRESULT hr = getTypeInfo()->GetIDsOfNames( pNames, nSizeAr, arDispidNamedArgs.get() );
+            if ( hr == E_NOTIMPL )
+                hr = m_spDispatch->GetIDsOfNames(IID_NULL, pNames, nSizeAr, LOCALE_USER_DEFAULT, arDispidNamedArgs.get() );
+
+            if ( SUCCEEDED( hr ) )
+            {
+                if ( pInvkinds[nStep] == DISPATCH_PROPERTYPUT )
+                {
+                    DISPID*  arIDs = arDispidNamedArgs.get();
+                    arIDs[0] = DISPID_PROPERTYPUT;
+                    dispparams.rgdispidNamedArgs = arIDs;
+                }
+                else
+                {
+                    DISPID*  arIDs = arDispidNamedArgs.get();
+                    dispparams.rgdispidNamedArgs = & arIDs[1];
+                }
+            }
+            else if (hr == DISP_E_UNKNOWNNAME)
+            {
+                 throw IllegalArgumentException(
+                     "[automation bridge]One of the named arguments is wrong!",
+                     Reference<XInterface>(), 0);
+            }
+            else
+            {
+                throw InvocationTargetException(
+                    "[automation bridge] ITypeInfo::GetIDsOfNames returned error "
+                    + OUString::number(static_cast<sal_Int32>(hr), 16), Reference<XInterface>(), Any());
+            }
+        }
+
+        //Convert arguments
+        ptrArgs.reset(new CComVariant[dispparams.cArgs]);
+        ptrRefArgs.reset(new CComVariant[dispparams.cArgs]);
+        arArgs = ptrArgs.get();
+        arRefArgs = ptrRefArgs.get();
+
+        sal_Int32 nInd = 0;
+        try
+        {
+            sal_Int32 revIndex = 0;
+            for ( nInd = 0; nInd < sal_Int32(dispparams.cArgs); nInd++)
+            {
+                revIndex = dispparams.cArgs - nInd - 1;
+                arRefArgs[revIndex].byref = nullptr;
+                Any  anyArg;
+                if ( nInd < aParams.getLength() )
+                    anyArg = aParams.getConstArray()[nInd];
+
+                // Property Put arguments
+                if ( anyArg.getValueType() == cppu::UnoType<PropertyPutArgument>::get() )
+                {
+                    PropertyPutArgument arg;
+                    anyArg >>= arg;
+                    anyArg = arg.Value;
+                }
+                // named argument
+                if (anyArg.getValueType() == cppu::UnoType<NamedArgument>::get())
+                {
+                    NamedArgument aNamedArgument;
+                    anyArg >>= aNamedArgument;
+                    anyArg = aNamedArgument.Value;
+                }
+
+                if ( nInd < aParams.getLength() && anyArg.getValueTypeClass() != TypeClass_VOID )
+                {
+                    anyToVariant( &arArgs[revIndex], anyArg, VT_VARIANT );
+                }
+                else
+                {
+                    arArgs[revIndex].vt = VT_ERROR;
+                    arArgs[revIndex].scode = DISP_E_PARAMNOTFOUND;
+                }
+            }
+        }
+        catch (IllegalArgumentException & e)
+        {
+            e.ArgumentPosition = ::sal::static_int_cast< sal_Int16, sal_Int32 >( nInd );
+            throw;
+        }
+        catch (CannotConvertException & e)
+        {
+            e.ArgumentIndex = nInd;
+            throw;
+        }
+
+        dispparams.rgvarg = arArgs;
+        // invoking OLE method
+        hInvRes = m_spDispatch->Invoke( dispid,
+                                        IID_NULL,
+                                        LOCALE_USER_DEFAULT,
+                                        ::sal::static_int_cast< WORD, INVOKEKIND >( pInvkinds[nStep] ),
+                                        &dispparams,
+                                        &varResult,
+                                        &excepinfo,
+                                        &uArgErr);
+    }
+
+    // converting return value and out parameter back to UNO
+    if ( SUCCEEDED( hInvRes ) )
+        variantToAny( &varResult, aResult, false );
+    else
+    {
+        // map error codes to exceptions
+        OUString message;
+        switch ( hInvRes )
+        {
+            case S_OK:
+                break;
+            case DISP_E_BADPARAMCOUNT:
+                throw IllegalArgumentException("[automation bridge] Wrong "
+                      "number of arguments. Object returned DISP_E_BADPARAMCOUNT.",
+                      nullptr, 0);
+                break;
+            case DISP_E_BADVARTYPE:
+                throw RuntimeException("[automation bridge] One or more "
+                      "arguments have the wrong type. Object returned "
+                      "DISP_E_BADVARTYPE.", nullptr);
+                break;
+            case DISP_E_EXCEPTION:
+                    message = OUString::Concat("[automation bridge]: ")
+                        + std::u16string_view(o3tl::toU(excepinfo.bstrDescription),
+                            ::SysStringLen(excepinfo.bstrDescription));
+                    throw InvocationTargetException(message, Reference<XInterface>(), Any());
+                    break;
+            case DISP_E_MEMBERNOTFOUND:
+                message = "[automation bridge]: A function with the name \""
+                    + aName + "\" is not supported. Object returned "
+                    "DISP_E_MEMBERNOTFOUND.";
+                throw IllegalArgumentException(message, nullptr, 0);
+                break;
+            case DISP_E_NONAMEDARGS:
+                throw IllegalArgumentException("[automation bridge] Object "
+                      "returned DISP_E_NONAMEDARGS",nullptr, ::sal::static_int_cast< sal_Int16, unsigned int >( uArgErr ));
+                break;
+            case DISP_E_OVERFLOW:
+                throw CannotConvertException("[automation bridge] Call failed.",
+                                             static_cast<XInterface*>(
+                    static_cast<XWeak*>(this)), TypeClass_UNKNOWN, FailReason::OUT_OF_RANGE, uArgErr);
+                break;
+            case DISP_E_PARAMNOTFOUND:
+                throw IllegalArgumentException("[automation bridge]Call failed."
+                                               "Object returned DISP_E_PARAMNOTFOUND.",
+                                               nullptr, ::sal::static_int_cast< sal_Int16, unsigned int >( uArgErr ));
+                break;
+            case DISP_E_TYPEMISMATCH:
+                throw CannotConvertException("[automation bridge] Call  failed. "
+                                             "Object returned DISP_E_TYPEMISMATCH",
+                    static_cast<XInterface*>(
+                    static_cast<XWeak*>(this)) , TypeClass_UNKNOWN, FailReason::UNKNOWN, uArgErr);
+                break;
+            case DISP_E_UNKNOWNINTERFACE:
+                throw RuntimeException("[automation bridge] Call failed. "
+                                           "Object returned DISP_E_UNKNOWNINTERFACE.",nullptr);
+                break;
+            case DISP_E_UNKNOWNLCID:
+                throw RuntimeException("[automation bridge] Call failed. "
+                                           "Object returned DISP_E_UNKNOWNLCID.",nullptr);
+                break;
+            case DISP_E_PARAMNOTOPTIONAL:
+                throw CannotConvertException("[automation bridge] Call failed."
+                      "Object returned DISP_E_PARAMNOTOPTIONAL",
+                            static_cast<XInterface*>(static_cast<XWeak*>(this)),
+                                  TypeClass_UNKNOWN, FailReason::NO_DEFAULT_AVAILABLE, uArgErr);
+                break;
+            default:
+                throw RuntimeException();
+                break;
+        }
+    }
+
+    return aResult;
+}
+
+sal_Bool SAL_CALL IUnknownWrapper::hasMember( const OUString& aName )
+{
+    if ( ! m_spDispatch )
+    {
+        throw RuntimeException(
+            "[automation bridge] The object does not have an IDispatch interface");
+    }
+
+    o2u_attachCurrentThread();
+    DISPID dispid;
+    return getDispid( aName, &dispid );
+}
+
+
+// UnoConversionUtilities --------------------------------------------------------------------------------
+Reference< XInterface > IUnknownWrapper::createUnoWrapperInstance()
+{
+    if( m_nUnoWrapperClass == INTERFACE_OLE_WRAPPER_IMPL)
+    {
+        Reference<XWeak> xWeak= static_cast<XWeak*>( new InterfaceOleWrapper(
+                                m_smgr, m_nUnoWrapperClass, m_nComWrapperClass));
+        return Reference<XInterface>( xWeak, UNO_QUERY);
+    }
+    else if( m_nUnoWrapperClass == UNO_OBJECT_WRAPPER_REMOTE_OPT)
+    {
+        Reference<XWeak> xWeak= static_cast<XWeak*>( new UnoObjectWrapperRemoteOpt(
+                                m_smgr, m_nUnoWrapperClass, m_nComWrapperClass));
+        return Reference<XInterface>( xWeak, UNO_QUERY);
+    }
+    else
+        return Reference<XInterface>();
+}
+Reference<XInterface> IUnknownWrapper::createComWrapperInstance()
+{
+    Reference<XWeak> xWeak= static_cast<XWeak*>( new IUnknownWrapper(
+                            m_smgr, m_nUnoWrapperClass, m_nComWrapperClass));
+    return Reference<XInterface>( xWeak, UNO_QUERY);
+}
+
+
+void IUnknownWrapper::getMethodInfo(std::u16string_view sName, TypeDescription& methodInfo)
+{
+    TypeDescription desc= getInterfaceMemberDescOfCurrentCall(sName);
+    if( desc.is())
+    {
+        typelib_TypeDescription* pMember= desc.get();
+        if( pMember->eTypeClass == typelib_TypeClass_INTERFACE_METHOD )
+            methodInfo= pMember;
+    }
+}
+
+void IUnknownWrapper::getAttributeInfo(std::u16string_view sName, TypeDescription& attributeInfo)
+{
+    TypeDescription desc= getInterfaceMemberDescOfCurrentCall(sName);
+    if( desc.is())
+    {
+        typelib_TypeDescription* pMember= desc.get();
+        if( pMember->eTypeClass == typelib_TypeClass_INTERFACE_ATTRIBUTE )
+        {
+            attributeInfo= reinterpret_cast<typelib_InterfaceAttributeTypeDescription*>(pMember)->pAttributeTypeRef;
+        }
+    }
+}
+TypeDescription IUnknownWrapper::getInterfaceMemberDescOfCurrentCall(std::u16string_view sName)
+{
+    TypeDescription ret;
+
+    for( auto const & rType : std::as_const(m_seqTypes) )
+    {
+        TypeDescription _curDesc( rType );
+        _curDesc.makeComplete();
+        typelib_InterfaceTypeDescription * pInterface= reinterpret_cast<typelib_InterfaceTypeDescription*>(_curDesc.get());
+        if( pInterface)
+        {
+            typelib_InterfaceMemberTypeDescription* pMember= nullptr;
+            //find the member description of the current call
+            for( int j=0; j < pInterface->nAllMembers; j++)
+            {
+                typelib_TypeDescriptionReference* pTypeRefMember = pInterface->ppAllMembers[j];
+                typelib_TypeDescription* pDescMember= nullptr;
+                TYPELIB_DANGER_GET( &pDescMember, pTypeRefMember);
+
+                typelib_InterfaceMemberTypeDescription* pInterfaceMember=
+                    reinterpret_cast<typelib_InterfaceMemberTypeDescription*>(pDescMember);
+                if( OUString( pInterfaceMember->pMemberName) == sName)
+                {
+                    pMember= pInterfaceMember;
+                    break;
+                }
+                TYPELIB_DANGER_RELEASE( pDescMember);
+            }
+
+            if( pMember)
+            {
+                ret= &pMember->aBase;
+                TYPELIB_DANGER_RELEASE( &pMember->aBase);
+            }
+        }
+        if( ret.is())
+            break;
+    }
+    return ret;
+}
+
+bool IUnknownWrapper::isJScriptObject()
+{
+    if(  m_eJScript == JScriptUndefined)
+    {
+        CComDispatchDriver disp( m_spDispatch);
+        if( disp)
+        {
+            CComVariant result;
+            if( SUCCEEDED(  disp.GetPropertyByName( JSCRIPT_ID_PROPERTY, &result)))
+            {
+                if(result.vt == VT_BSTR)
+                {
+                    CComBSTR name( result.bstrVal);
+                    name.ToLower();
+                    if( name == CComBSTR(JSCRIPT_ID))
+                        m_eJScript= IsJScript;
+                }
+            }
+        }
+        if( m_eJScript == JScriptUndefined)
+            m_eJScript= NoJScript;
+    }
+
+    return m_eJScript != NoJScript;
+}
+
+
+/** @internal
+    The function ultimately calls IDispatch::Invoke on the wrapped COM object.
+    The COM object does not implement UNO Interfaces ( via IDispatch). This
+    is the case when the OleObjectFactory service has been used to create a
+    component.
+    @exception IllegalArgumentException
+    @exception CannotConvertException
+    @InvocationTargetException
+    @RuntimeException
+    @BridgeRuntimeError
+*/
+Any  IUnknownWrapper::invokeWithDispIdComTlb(const OUString& sFuncName,
+                                             const Sequence< Any >& Params,
+                                             Sequence< sal_Int16 >& OutParamIndex,
+                                             Sequence< Any >& OutParam)
+{
+    // Get type info for the call. It can be a method call or property put or
+    // property get operation.
+    FuncDesc aFuncDesc(getTypeInfo());
+    getFuncDescForInvoke(sFuncName, Params, & aFuncDesc);
+    return invokeWithDispIdComTlb( aFuncDesc, sFuncName, Params, OutParamIndex, OutParam );
+}
+
+Any  IUnknownWrapper::invokeWithDispIdComTlb(FuncDesc& aFuncDesc,
+                                             const OUString& sFuncName,
+                                             const Sequence< Any >& Params,
+                                             Sequence< sal_Int16 >& OutParamIndex,
+                                             Sequence< Any >& OutParam)
+{
+    Any ret;
+    HRESULT result;
+
+    DISPPARAMS      dispparams = {nullptr, nullptr, 0, 0};
+    CComVariant     varResult;
+    ExcepInfo       excepinfo;
+    unsigned int    uArgErr;
+    sal_Int32       i = 0;
+    sal_Int32 nUnoArgs = Params.getLength();
+    DISPID idPropertyPut = DISPID_PROPERTYPUT;
+    std::unique_ptr<DISPID[]> arDispidNamedArgs;
+    std::unique_ptr<CComVariant[]> ptrArgs;
+    std::unique_ptr<CComVariant[]> ptrRefArgs; // referenced arguments
+    CComVariant * arArgs = nullptr;
+    CComVariant * arRefArgs = nullptr;
+    sal_Int32 revIndex = 0;
+
+    //Set the array of DISPIDs for named args if it is a property put operation.
+    //If there are other named arguments another array is set later on.
+    if (aFuncDesc->invkind == INVOKE_PROPERTYPUT
+        || aFuncDesc->invkind == INVOKE_PROPERTYPUTREF)
+        dispparams.rgdispidNamedArgs = & idPropertyPut;
+
+    //Determine the number of named arguments
+    for (int iParam = 0; iParam < nUnoArgs; iParam ++)
+    {
+        const Any & curArg = Params[iParam];
+        if (curArg.getValueType() == cppu::UnoType<NamedArgument>::get())
+            dispparams.cNamedArgs ++;
+    }
+    //In a property put operation a property value is a named argument (DISPID_PROPERTYPUT).
+    //Therefore the number of named arguments is increased by one.
+    //Although named, the argument is not named in an actual language, such as Basic,
+    //therefore it is never a com.sun.star.bridge.oleautomation.NamedArgument
+    if (aFuncDesc->invkind == DISPATCH_PROPERTYPUT
+        || aFuncDesc->invkind == DISPATCH_PROPERTYPUTREF)
+        dispparams.cNamedArgs ++;
+
+    //Determine the number of all arguments and named arguments
+    if (aFuncDesc->cParamsOpt == -1)
+    {
+        //Attribute vararg is set on this method. "Unlimited" number of args
+        //supported. There can be no optional or defaultvalue on any of the arguments.
+        dispparams.cArgs = nUnoArgs;
+    }
+    else
+    {
+        //If there are named arguments, then the dispparams.cArgs
+        //is the number of supplied args, otherwise it is the expected number.
+        if (dispparams.cNamedArgs)
+            dispparams.cArgs = nUnoArgs;
+        else
+            dispparams.cArgs = aFuncDesc->cParams;
+    }
+
+    //check if there are not too many arguments supplied
+    if (::sal::static_int_cast< sal_uInt32, int >( nUnoArgs ) > dispparams.cArgs)
+    {
+        throw IllegalArgumentException(
+            "[automation bridge] There are too many arguments for this method",
+            Reference<XInterface>(), static_cast<sal_Int16>(dispparams.cArgs));
+    }
+
+    //Set up the array of DISPIDs (DISPPARAMS::rgdispidNamedArgs)
+    //for the named arguments.
+    //If there is only one named arg and if it is because of a property put
+    //operation, then we need not set up the DISPID array.
+    if (dispparams.cNamedArgs > 0 &&
+        ! (dispparams.cNamedArgs == 1 &&
+           (aFuncDesc->invkind == INVOKE_PROPERTYPUT ||
+            aFuncDesc->invkind == INVOKE_PROPERTYPUTREF)))
+    {
+        //set up an array containing the member and parameter names
+        //which is then used in ITypeInfo::GetIDsOfNames
+        //First determine the size of the array of names which is passed to
+        //ITypeInfo::GetIDsOfNames. It must hold the method names + the named
+        //args.
+        int nSizeAr = dispparams.cNamedArgs + 1;
+        if (aFuncDesc->invkind == INVOKE_PROPERTYPUT
+            || aFuncDesc->invkind == INVOKE_PROPERTYPUTREF)
+        {
+            nSizeAr = dispparams.cNamedArgs; //counts the DISID_PROPERTYPUT
+        }
+
+        std::unique_ptr<OLECHAR*[]> saNames(new OLECHAR*[nSizeAr]);
+        OLECHAR ** arNames = saNames.get();
+        arNames[0] = const_cast<OLECHAR*>(o3tl::toW(sFuncName.getStr()));
+
+        int cNamedArg = 0;
+        for (size_t iParams = 0; iParams < dispparams.cArgs; iParams ++)
+        {
+            const Any &  curArg = Params[iParams];
+            if (auto v = o3tl::tryAccess<NamedArgument>(curArg))
+            {
+                const NamedArgument& arg = *v;
+                //We put the parameter names in reverse order into the array,
+                //so we can use the DISPID array for DISPPARAMS::rgdispidNamedArgs
+                //The first name in the array is the method name
+                arNames[nSizeAr - 1 - cNamedArg++] = const_cast<OLECHAR*>(o3tl::toW(arg.Name.getStr()));
+            }
+        }
+
+        //Prepare the array of DISPIDs for ITypeInfo::GetIDsOfNames
+        //it must be big enough to contain the DISPIDs of the member + parameters
+        arDispidNamedArgs.reset(new DISPID[nSizeAr]);
+        HRESULT hr = getTypeInfo()->GetIDsOfNames(arNames, nSizeAr,
+                                                  arDispidNamedArgs.get());
+        if ( hr == E_NOTIMPL )
+            hr = m_spDispatch->GetIDsOfNames(IID_NULL, arNames, nSizeAr, LOCALE_USER_DEFAULT, arDispidNamedArgs.get() );
+
+        if (hr == S_OK)
+        {
+            // In a "property put" operation, the property value is a named param with the
+            //special DISPID DISPID_PROPERTYPUT
+            if (aFuncDesc->invkind == DISPATCH_PROPERTYPUT
+                || aFuncDesc->invkind == DISPATCH_PROPERTYPUTREF)
+            {
+                //Element at index 0 in the DISPID array must be DISPID_PROPERTYPUT
+                //The first item in the array arDispidNamedArgs is the DISPID for
+                //the method. We replace it with DISPID_PROPERTYPUT.
+                DISPID*  arIDs = arDispidNamedArgs.get();
+                arIDs[0] = DISPID_PROPERTYPUT;
+                dispparams.rgdispidNamedArgs = arIDs;
+            }
+            else
+            {
+                //The first item in the array arDispidNamedArgs is the DISPID for
+                //the method. It must be removed
+                DISPID*  arIDs = arDispidNamedArgs.get();
+                dispparams.rgdispidNamedArgs = & arIDs[1];
+            }
+        }
+        else if (hr == DISP_E_UNKNOWNNAME)
+        {
+             throw IllegalArgumentException(
+                 "[automation bridge]One of the named arguments is wrong!",
+                 Reference<XInterface>(), 0);
+        }
+        else
+        {
+            throw InvocationTargetException(
+                "[automation bridge] ITypeInfo::GetIDsOfNames returned error "
+                + OUString::number(static_cast<sal_Int32>(hr), 16), Reference<XInterface>(), Any());
+        }
+    }
+
+    //Convert arguments
+    ptrArgs.reset(new CComVariant[dispparams.cArgs]);
+    ptrRefArgs.reset(new CComVariant[dispparams.cArgs]);
+    arArgs = ptrArgs.get();
+    arRefArgs = ptrRefArgs.get();
+    try
+    {
+        for (i = 0; i < static_cast<sal_Int32>(dispparams.cArgs); i++)
+        {
+            revIndex= dispparams.cArgs - i -1;
+            arRefArgs[revIndex].byref=nullptr;
+            Any  anyArg;
+            if ( i < nUnoArgs)
+                anyArg= Params.getConstArray()[i];
+
+            unsigned short paramFlags = PARAMFLAG_FOPT | PARAMFLAG_FIN;
+            VARTYPE varType = VT_VARIANT;
+            if (aFuncDesc->cParamsOpt != -1 || aFuncDesc->cParams != (i + 1))
+            {
+                paramFlags = aFuncDesc->lprgelemdescParam[i].paramdesc.wParamFlags;
+                varType = getElementTypeDesc(&aFuncDesc->lprgelemdescParam[i].tdesc);
+            }
+
+            // Make sure that there is a UNO parameter for every
+            // expected parameter. If there is no UNO parameter where the
+            // called function expects one, then it must be optional. Otherwise
+            // it's a UNO programming error.
+            if (i  >= nUnoArgs && !(paramFlags & PARAMFLAG_FOPT))
+            {
+                throw IllegalArgumentException(
+                    ("ole automation bridge: The called function expects an argument at position: "
+                     + OUString::number(i) + " (index starting at 0)."),
+                    Reference<XInterface>(), static_cast<sal_Int16>(i));
+            }
+
+            // Property Put arguments
+            if (anyArg.getValueType() == cppu::UnoType<PropertyPutArgument>::get())
+            {
+                PropertyPutArgument arg;
+                anyArg >>= arg;
+                anyArg = arg.Value;
+            }
+            // named argument
+            if (anyArg.getValueType() == cppu::UnoType<NamedArgument>::get())
+            {
+                NamedArgument aNamedArgument;
+                anyArg >>= aNamedArgument;
+                anyArg = aNamedArgument.Value;
+            }
+            // out param
+            if (paramFlags & PARAMFLAG_FOUT &&
+                ! (paramFlags & PARAMFLAG_FIN)  )
+            {
+                VARTYPE type = ::sal::static_int_cast< VARTYPE, int >( varType ^ VT_BYREF );
+                if (i < nUnoArgs)
+                {
+                    arRefArgs[revIndex].vt= type;
+                }
+                else
+                {
+                    //optional arg
+                    arRefArgs[revIndex].vt = VT_ERROR;
+                    arRefArgs[revIndex].scode = DISP_E_PARAMNOTFOUND;
+                }
+                if( type == VT_VARIANT )
+                {
+                    arArgs[revIndex].vt= VT_VARIANT | VT_BYREF;
+                    arArgs[revIndex].byref= &arRefArgs[revIndex];
+                }
+                else
+                {
+                    arArgs[revIndex].vt= varType;
+                    if (type == VT_DECIMAL)
+                        arArgs[revIndex].byref= & arRefArgs[revIndex].decVal;
+                    else
+                        arArgs[revIndex].byref= & arRefArgs[revIndex].byref;
+                }
+            }
+            // in/out  + in byref params
+            else if (varType & VT_BYREF)
+            {
+                VARTYPE type = ::sal::static_int_cast< VARTYPE, int >( varType ^ VT_BYREF );
+                CComVariant var;
+
+                if (i < nUnoArgs && anyArg.getValueTypeClass() != TypeClass_VOID)
+                {
+                    anyToVariant( & arRefArgs[revIndex], anyArg, type);
+                }
+                else if (paramFlags & PARAMFLAG_FHASDEFAULT)
+                {
+                    //optional arg with default
+                    VariantCopy( & arRefArgs[revIndex],
+                                & aFuncDesc->lprgelemdescParam[i].paramdesc.
+                                pparamdescex->varDefaultValue);
+                }
+                else
+                {
+                    //optional arg
+                    //e.g: call func(x) in basic : func() ' no arg supplied
+                    OSL_ASSERT(paramFlags & PARAMFLAG_FOPT);
+                    arRefArgs[revIndex].vt = VT_ERROR;
+                    arRefArgs[revIndex].scode = DISP_E_PARAMNOTFOUND;
+                }
+
+                // Set the converted arguments in the array which will be
+                // DISPPARAMS::rgvarg
+                // byref arg VT_XXX |VT_BYREF
+                arArgs[revIndex].vt = varType;
+                if (revIndex == 0 && aFuncDesc->invkind == INVOKE_PROPERTYPUT)
+                {
+                    arArgs[revIndex] = arRefArgs[revIndex];
+                }
+                else if (type == VT_DECIMAL)
+                {
+                    arArgs[revIndex].byref= & arRefArgs[revIndex].decVal;
+                }
+                else if (type == VT_VARIANT)
+                {
+                    if ( ! (paramFlags & PARAMFLAG_FOUT))
+                        arArgs[revIndex] = arRefArgs[revIndex];
+                    else
+                        arArgs[revIndex].byref = & arRefArgs[revIndex];
+                }
+                else
+                {
+                    arArgs[revIndex].byref = & arRefArgs[revIndex].byref;
+                    arArgs[revIndex].vt = ::sal::static_int_cast< VARTYPE, int >( arRefArgs[revIndex].vt | VT_BYREF );
+                }
+
+            }
+            // in parameter no VT_BYREF except for array, interfaces
+            else
+            {   // void any stands for optional param
+                if (i < nUnoArgs && anyArg.getValueTypeClass() != TypeClass_VOID)
+                {
+                    anyToVariant( & arArgs[revIndex], anyArg, varType);
+                }
+                //optional arg but no void any supplied
+                //Basic:  obj.func() ' first parameter left out because it is optional
+                else if (paramFlags & PARAMFLAG_FHASDEFAULT)
+                {
+                    //optional arg with default either as direct arg : VT_XXX or
+                    VariantCopy( & arArgs[revIndex],
+                        & aFuncDesc->lprgelemdescParam[i].paramdesc.
+                            pparamdescex->varDefaultValue);
+                }
+                else if (paramFlags & PARAMFLAG_FOPT)
+                {
+                    arArgs[revIndex].vt = VT_ERROR;
+                    arArgs[revIndex].scode = DISP_E_PARAMNOTFOUND;
+                }
+                else
+                {
+                    arArgs[revIndex].vt = VT_EMPTY;
+                    arArgs[revIndex].lVal = 0;
+                }
+            }
+        }
+    }
+    catch (IllegalArgumentException & e)
+    {
+        e.ArgumentPosition = ::sal::static_int_cast< sal_Int16, sal_Int32 >( i );
+        throw;
+    }
+    catch (CannotConvertException & e)
+    {
+        e.ArgumentIndex = i;
+        throw;
+    }
+    dispparams.rgvarg= arArgs;
+    // invoking OLE method
+    result = m_spDispatch->Invoke(aFuncDesc->memid,
+                                 IID_NULL,
+                                 LOCALE_USER_DEFAULT,
+                                 ::sal::static_int_cast< WORD, INVOKEKIND >( aFuncDesc->invkind ),
+                                 &dispparams,
+                                 &varResult,
+                                 &excepinfo,
+                                 &uArgErr);
+
+    // converting return value and out parameter back to UNO
+    if (result == S_OK)
+    {
+
+        // allocate space for the out param Sequence and indices Sequence
+        int outParamsCount= 0; // includes in/out parameter
+        for (int j = 0; j < aFuncDesc->cParams; j++)
+        {
+            if (aFuncDesc->lprgelemdescParam[j].paramdesc.wParamFlags &
+                PARAMFLAG_FOUT)
+                outParamsCount++;
+        }
+
+        OutParamIndex.realloc(outParamsCount);
+        OutParam.realloc(outParamsCount);
+        // Convert out params
+        if (outParamsCount)
+        {
+            auto pOutParamIndex = OutParamIndex.getArray();
+            auto pOutParam = OutParam.getArray();
+            int outParamIndex=0;
+            for (int paramIndex = 0; paramIndex < nUnoArgs; paramIndex ++)
+            {
+                //Determine the index within the method signature
+                int realParamIndex = paramIndex;
+                int revParamIndex = dispparams.cArgs - paramIndex - 1;
+                if (Params[paramIndex].getValueType()
+                    == cppu::UnoType<NamedArgument>::get())
+                {
+                    //dispparams.rgdispidNamedArgs contains the mapping from index
+                    //of named args list to index of parameter list
+                    realParamIndex = dispparams.rgdispidNamedArgs[revParamIndex];
+                }
+
+                // no named arg, always come before named args
+                if (! (aFuncDesc->lprgelemdescParam[realParamIndex].paramdesc.wParamFlags
+                       & PARAMFLAG_FOUT))
+                    continue;
+                Any outAny;
+                // variantToAny is called with the "reduce range" parameter set to sal_False.
+                // That causes VT_I4 values not to be converted down to a "lower" type. That
+                // feature exist for JScript only because it only uses VT_I4 for integer types.
+                try
+                {
+                    variantToAny( & arRefArgs[revParamIndex], outAny, false );
+                }
+                catch (IllegalArgumentException & e)
+                {
+                    e.ArgumentPosition = static_cast<sal_Int16>(paramIndex);
+                    throw;
+                }
+                catch (CannotConvertException & e)
+                {
+                    e.ArgumentIndex = paramIndex;
+                    throw;
+                }
+                pOutParam[outParamIndex] = outAny;
+                pOutParamIndex[outParamIndex] = ::sal::static_int_cast< sal_Int16, int >( paramIndex );
+                outParamIndex++;
+            }
+            OutParam.realloc(outParamIndex);
+            OutParamIndex.realloc(outParamIndex);
+        }
+        // Return value
+        variantToAny(&varResult, ret, false);
+    }
+
+    // map error codes to exceptions
+    OUString message;
+    switch (result)
+    {
+        case S_OK:
+            break;
+        case DISP_E_BADPARAMCOUNT:
+            throw IllegalArgumentException("[automation bridge] Wrong "
+                  "number of arguments. Object returned DISP_E_BADPARAMCOUNT.",
+                  nullptr, 0);
+            break;
+        case DISP_E_BADVARTYPE:
+            throw RuntimeException("[automation bridge] One or more "
+                  "arguments have the wrong type. Object returned "
+                  "DISP_E_BADVARTYPE.", nullptr);
+            break;
+        case DISP_E_EXCEPTION:
+                message = OUString::Concat("[automation bridge]: ")
+                    + std::u16string_view(o3tl::toU(excepinfo.bstrDescription),
+                                    ::SysStringLen(excepinfo.bstrDescription));
+
+                throw InvocationTargetException(message, Reference<XInterface>(), Any());
+            break;
+        case DISP_E_MEMBERNOTFOUND:
+            message = "[automation bridge]: A function with the name \""
+                + sFuncName + "\" is not supported. Object returned "
+                "DISP_E_MEMBERNOTFOUND.";
+            throw IllegalArgumentException(message, nullptr, 0);
+            break;
+        case DISP_E_NONAMEDARGS:
+            throw IllegalArgumentException("[automation bridge] Object "
+                  "returned DISP_E_NONAMEDARGS",nullptr, ::sal::static_int_cast< sal_Int16, unsigned int >( uArgErr ));
+            break;
+        case DISP_E_OVERFLOW:
+            throw CannotConvertException("[automation bridge] Call failed.",
+                                         static_cast<XInterface*>(
+                static_cast<XWeak*>(this)), TypeClass_UNKNOWN, FailReason::OUT_OF_RANGE, uArgErr);
+            break;
+        case DISP_E_PARAMNOTFOUND:
+            throw IllegalArgumentException("[automation bridge]Call failed."
+                                           "Object returned DISP_E_PARAMNOTFOUND.",
+                                           nullptr, ::sal::static_int_cast< sal_Int16, unsigned int >( uArgErr ));
+            break;
+        case DISP_E_TYPEMISMATCH:
+            throw CannotConvertException("[automation bridge] Call  failed. "
+                                         "Object returned DISP_E_TYPEMISMATCH",
+                static_cast<XInterface*>(
+                static_cast<XWeak*>(this)) , TypeClass_UNKNOWN, FailReason::UNKNOWN, uArgErr);
+            break;
+        case DISP_E_UNKNOWNINTERFACE:
+            throw RuntimeException("[automation bridge] Call failed. "
+                                       "Object returned DISP_E_UNKNOWNINTERFACE.",nullptr);
+            break;
+        case DISP_E_UNKNOWNLCID:
+            throw RuntimeException("[automation bridge] Call failed. "
+                                       "Object returned DISP_E_UNKNOWNLCID.",nullptr);
+            break;
+        case DISP_E_PARAMNOTOPTIONAL:
+            throw CannotConvertException("[automation bridge] Call failed."
+                  "Object returned DISP_E_PARAMNOTOPTIONAL",
+                        static_cast<XInterface*>(static_cast<XWeak*>(this)),
+                              TypeClass_UNKNOWN, FailReason::NO_DEFAULT_AVAILABLE, uArgErr);
+            break;
+        default:
+            throw RuntimeException();
+            break;
+    }
+
+    return ret;
+}
+
+void IUnknownWrapper::getFuncDescForInvoke(const OUString & sFuncName,
+                                           const Sequence<Any> & seqArgs,
+                                           FUNCDESC** pFuncDesc)
+{
+    int nUnoArgs = seqArgs.getLength();
+    const Any * arArgs = seqArgs.getConstArray();
+    ITypeInfo* pInfo = getTypeInfo();
+
+    //If the last of the positional arguments is a PropertyPutArgument
+    //then obtain the type info for the property put operation.
+
+    //The property value is always the last argument, in a positional argument list
+    //or in a list of named arguments. A PropertyPutArgument is actually a named argument
+    //hence it must not be put in an extra NamedArgument structure
+    if (nUnoArgs > 0 &&
+        arArgs[nUnoArgs - 1].getValueType() == cppu::UnoType<PropertyPutArgument>::get())
+    {
+        // DISPATCH_PROPERTYPUT
+        FuncDesc aDescGet(pInfo);
+        FuncDesc aDescPut(pInfo);
+        VarDesc aVarDesc(pInfo);
+        getPropDesc(sFuncName, & aDescGet, & aDescPut, & aVarDesc);
+        if ( ! aDescPut)
+        {
+            throw IllegalArgumentException(
+                "[automation bridge] The object does not have a writeable property: "
+                + sFuncName, Reference<XInterface>(), 0);
+        }
+        *pFuncDesc = aDescPut.Detach();
+    }
+    else
+    {   // DISPATCH_METHOD
+        FuncDesc aFuncDesc(pInfo);
+        getFuncDesc(sFuncName, & aFuncDesc);
+        if ( ! aFuncDesc)
+        {
+            // Fallback: DISPATCH_PROPERTYGET can mostly be called as
+            // DISPATCH_METHOD
+            ITypeInfo * pTypeInfo = getTypeInfo();
+            FuncDesc aDescPut(pTypeInfo);
+            VarDesc aVarDesc(pTypeInfo);
+            getPropDesc(sFuncName, & aFuncDesc, & aDescPut, & aVarDesc);
+            if ( ! aFuncDesc )
+            {
+                throw IllegalArgumentException(
+                    "[automation bridge] The object does not have a function"
+                    " or readable property \""
+                    + sFuncName + "\"", Reference<XInterface>(), 0);
+            }
+        }
+        *pFuncDesc = aFuncDesc.Detach();
+    }
+}
+bool IUnknownWrapper::getDispid(const OUString& sFuncName, DISPID * id)
+{
+    OSL_ASSERT(m_spDispatch);
+    LPOLESTR lpsz = const_cast<LPOLESTR> (o3tl::toW(sFuncName.getStr()));
+    HRESULT hr = m_spDispatch->GetIDsOfNames(IID_NULL, &lpsz, 1, LOCALE_USER_DEFAULT, id);
+    return hr == S_OK;
+}
+void IUnknownWrapper::getFuncDesc(const OUString & sFuncName, FUNCDESC ** pFuncDesc)
+
+{
+    OSL_ASSERT( * pFuncDesc == nullptr);
+    buildComTlbIndex();
+    typedef TLBFuncIndexMap::const_iterator cit;
+    //We assume there is only one entry with the function name. A property
+    //would have two entries.
+    cit itIndex= m_mapComFunc.find(sFuncName);
+    if (itIndex == m_mapComFunc.end())
+    {
+        //try case insensitive with IDispatch::GetIDsOfNames
+        DISPID id;
+        if (getDispid(sFuncName, &id))
+        {
+            CComBSTR memberName;
+            unsigned int pcNames=0;
+            // get the case sensitive name
+            if( SUCCEEDED(getTypeInfo()->GetNames( id, & memberName, 1, &pcNames)))
+            {
+                //get the associated index and add an entry to the map
+                //with the name sFuncName which differs in the casing of the letters to
+                //the actual name as obtained from ITypeInfo
+                OUString sRealName(o3tl::toU(LPCOLESTR(memberName)));
+                cit itOrg  = m_mapComFunc.find(sRealName);
+                OSL_ASSERT(itOrg != m_mapComFunc.end());
+                // maybe this is a property, if so we need
+                // to store either both id's ( put/get ) or
+                // just the get. Storing both is more consistent
+                std::pair<cit, cit> pItems = m_mapComFunc.equal_range( sRealName );
+                for ( ;pItems.first != pItems.second; ++pItems.first )
+                    m_mapComFunc.insert( TLBFuncIndexMap::value_type ( std::make_pair(sFuncName, pItems.first->second ) ));
+                itIndex =
+                    m_mapComFunc.find( sFuncName );
+            }
+        }
+    }
+
+#if OSL_DEBUG_LEVEL >= 1
+    // There must only be one entry if sFuncName represents a function or two
+    // if it is a property
+    std::pair<cit, cit> p = m_mapComFunc.equal_range(sFuncName.toAsciiLowerCase());
+    int numEntries = 0;
+    for ( ;p.first != p.second; p.first ++, numEntries ++);
+    OSL_ASSERT( ! (numEntries > 3) );
+#endif
+    if( itIndex != m_mapComFunc.end())
+    {
+        ITypeInfo* pType= getTypeInfo();
+        FUNCDESC * pDesc = nullptr;
+        if (!SUCCEEDED(pType->GetFuncDesc(itIndex->second, & pDesc)))
+        {
+            throw BridgeRuntimeError("[automation bridge] Could not get "
+                                     "FUNCDESC for " + sFuncName);
+        }
+        if (pDesc->invkind == INVOKE_FUNC)
+        {
+            (*pFuncDesc) = pDesc;
+        }
+        else
+        {
+            pType->ReleaseFuncDesc(pDesc);
+        }
+    }
+   //else no entry found for sFuncName, pFuncDesc will not be filled in
+}
+
+void IUnknownWrapper::getPropDesc(const OUString & sFuncName, FUNCDESC ** pFuncDescGet,
+                                  FUNCDESC** pFuncDescPut, VARDESC** pVarDesc)
+{
+    OSL_ASSERT( * pFuncDescGet == nullptr && * pFuncDescPut == nullptr);
+    buildComTlbIndex();
+    typedef TLBFuncIndexMap::const_iterator cit;
+    std::pair<cit, cit> p = m_mapComFunc.equal_range(sFuncName);
+    if (p.first == m_mapComFunc.end())
+    {
+        //try case insensitive with IDispatch::GetIDsOfNames
+        DISPID id;
+        if (getDispid(sFuncName, &id))
+        {
+            CComBSTR memberName;
+            unsigned int pcNames=0;
+            // get the case sensitive name
+            if( SUCCEEDED(getTypeInfo()->GetNames( id, & memberName, 1, &pcNames)))
+            {
+                //As opposed to getFuncDesc, we do not add the value because we would
+                // need to find the get and set description for the property. This would
+                //mean to iterate over all FUNCDESCs again.
+                p = m_mapComFunc.equal_range(OUString(o3tl::toU(LPCOLESTR(memberName))));
+            }
+        }
+    }
+
+    for ( int i = 0 ;p.first != p.second; p.first ++, i ++)
+    {
+        // There are a maximum of two entries, property put and property get
+        OSL_ASSERT( ! (i > 2) );
+        ITypeInfo* pType= getTypeInfo();
+        FUNCDESC * pFuncDesc = nullptr;
+        if (SUCCEEDED( pType->GetFuncDesc(p.first->second, & pFuncDesc)))
+        {
+            if (pFuncDesc->invkind == INVOKE_PROPERTYGET)
+            {
+                (*pFuncDescGet) = pFuncDesc;
+            }
+            else if (pFuncDesc->invkind == INVOKE_PROPERTYPUT ||
+                     pFuncDesc->invkind == INVOKE_PROPERTYPUTREF)
+            {
+                //a property can have 3 entries, put, put ref, get
+                // If INVOKE_PROPERTYPUTREF or INVOKE_PROPERTYPUT is used
+                //depends on what is found first.
+                if ( * pFuncDescPut)
+                {
+                    //we already have found one
+                    pType->ReleaseFuncDesc(pFuncDesc);
+                }
+                else
+                {
+                    (*pFuncDescPut) = pFuncDesc;
+                }
+            }
+            else
+            {
+                pType->ReleaseFuncDesc(pFuncDesc);
+            }
+        }
+        //ITypeInfo::GetFuncDesc may even provide a funcdesc for a VARDESC
+        // with invkind = INVOKE_FUNC. Since this function should only return
+        //a value for a real property (XInvokation::hasMethod, ..::hasProperty
+        //we need to make sure that sFuncName represents a real property.
+        VARDESC * pVD = nullptr;
+        if (SUCCEEDED(pType->GetVarDesc(p.first->second, & pVD)))
+            (*pVarDesc) = pVD;
+    }
+   //else no entry for sFuncName, pFuncDesc will not be filled in
+}
+
+VARTYPE IUnknownWrapper::getUserDefinedElementType( ITypeInfo* pTypeInfo, const DWORD nHrefType )
+{
+    VARTYPE _type( VT_NULL );
+    if ( pTypeInfo )
+    {
+        CComPtr<ITypeInfo> spRefInfo;
+        pTypeInfo->GetRefTypeInfo( nHrefType, &spRefInfo.p );
+        if ( spRefInfo )
+        {
+            TypeAttr attr( spRefInfo );
+            spRefInfo->GetTypeAttr( &attr );
+            if ( attr->typekind == TKIND_ENUM )
+            {
+                // We use the type of the first enum value.
+                if ( attr->cVars == 0 )
+                {
+                    throw BridgeRuntimeError("[automation bridge] Could not obtain type description");
+                }
+                VarDesc var( spRefInfo );
+                spRefInfo->GetVarDesc( 0, &var );
+                _type = var->lpvarValue->vt;
+            }
+            else if ( attr->typekind == TKIND_INTERFACE )
+            {
+                _type = VT_UNKNOWN;
+            }
+            else if ( attr->typekind == TKIND_DISPATCH )
+            {
+                _type = VT_DISPATCH;
+            }
+            else if ( attr->typekind == TKIND_ALIAS )
+            {
+                // TKIND_ALIAS is a type that is an alias for another type. So get that alias type.
+                _type = getUserDefinedElementType( pTypeInfo, attr->tdescAlias.hreftype );
+            }
+            else
+            {
+                throw BridgeRuntimeError( "[automation bridge] Unhandled user defined type." );
+            }
+        }
+    }
+    return _type;
+}
+
+VARTYPE IUnknownWrapper::getElementTypeDesc(const TYPEDESC *desc)
+{
+    VARTYPE _type( VT_NULL );
+
+    if (desc->vt == VT_PTR)
+    {
+        _type = getElementTypeDesc(desc->lptdesc);
+        _type |= VT_BYREF;
+    }
+    else if (desc->vt == VT_SAFEARRAY)
+    {
+        _type = getElementTypeDesc(desc->lptdesc);
+        _type |= VT_ARRAY;
+    }
+    else if (desc->vt == VT_USERDEFINED)
+    {
+        ITypeInfo* thisInfo = getTypeInfo(); //kept by this instance
+        _type = getUserDefinedElementType( thisInfo, desc->hreftype );
+    }
+    else
+    {
+        _type = desc->vt;
+    }
+    return _type;
+}
+
+void IUnknownWrapper::buildComTlbIndex()
+{
+    if ( ! m_bComTlbIndexInit)
+    {
+        MutexGuard guard(getBridgeMutex());
+        {
+            if ( ! m_bComTlbIndexInit)
+            {
+                OUString sError;
+                ITypeInfo* pType= getTypeInfo();
+                TypeAttr typeAttr(pType);
+                if( SUCCEEDED( pType->GetTypeAttr( &typeAttr)))
+                {
+                    for( WORD i= 0; i < typeAttr->cFuncs; i++)
+                    {
+                        FuncDesc funcDesc(pType);
+                        if( SUCCEEDED( pType->GetFuncDesc( i, &funcDesc)))
+                        {
+                            CComBSTR memberName;
+                            unsigned int pcNames=0;
+                            if( SUCCEEDED(pType->GetNames( funcDesc->memid, & memberName, 1, &pcNames)))
+                            {
+                                OUString usName(o3tl::toU(LPCOLESTR(memberName)));
+                                m_mapComFunc.emplace(usName, i);
+                            }
+                            else
+                            {
+                                sError = "[automation bridge] IUnknownWrapper::buildComTlbIndex, "
+                                         "ITypeInfo::GetNames failed.";
+                            }
+                        }
+                        else
+                            sError = "[automation bridge] IUnknownWrapper::buildComTlbIndex, "
+                                     "ITypeInfo::GetFuncDesc failed.";
+                    }
+
+                    //If we create an Object in JScript and a property then it
+                    //has VARDESC instead of FUNCDESC
+                    for (WORD i = 0; i < typeAttr->cVars; i++)
+                    {
+                        VarDesc varDesc(pType);
+                        if (SUCCEEDED(pType->GetVarDesc(i, & varDesc)))
+                        {
+                            CComBSTR memberName;
+                            unsigned int pcNames = 0;
+                            if (SUCCEEDED(pType->GetNames(varDesc->memid, & memberName, 1, &pcNames)))
+                            {
+                                if (varDesc->varkind == VAR_DISPATCH)
+                                {
+                                    OUString usName(o3tl::toU(LPCOLESTR(memberName)));
+                                    m_mapComFunc.emplace(usName, i);
+                                }
+                            }
+                            else
+                            {
+                                sError = "[automation bridge] IUnknownWrapper::buildComTlbIndex, "
+                                         "ITypeInfo::GetNames failed.";
+                            }
+                        }
+                        else
+                            sError = "[automation bridge] IUnknownWrapper::buildComTlbIndex, "
+                                     "ITypeInfo::GetVarDesc failed.";
+
+                    }
+                }
+                else
+                    sError = "[automation bridge] IUnknownWrapper::buildComTlbIndex, "
+                             "ITypeInfo::GetTypeAttr failed.";
+
+                if (sError.getLength())
+                {
+                    throw BridgeRuntimeError(sError);
+                }
+
+                m_bComTlbIndexInit = true;
+            }
+        }
+    }
+}
+
+ITypeInfo* IUnknownWrapper::getTypeInfo()
+{
+    if( !m_spDispatch)
+    {
+        throw BridgeRuntimeError("The object has no IDispatch interface!");
+    }
+
+    if( !m_spTypeInfo )
+    {
+        MutexGuard guard(getBridgeMutex());
+        if( ! m_spTypeInfo)
+        {
+            CComPtr< ITypeInfo > spType;
+            if( !SUCCEEDED( m_spDispatch->GetTypeInfo( 0, LOCALE_USER_DEFAULT, &spType.p)))
+            {
+                throw BridgeRuntimeError("[automation bridge]The dispatch object does not "
+                                         "support ITypeInfo!");
+            }
+
+            OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
+
+            //If this is a dual interface then TYPEATTR::typekind is usually TKIND_INTERFACE
+            //We need to get the type description for TKIND_DISPATCH
+            TypeAttr typeAttr(spType.p);
+            if( SUCCEEDED(spType->GetTypeAttr( &typeAttr)))
+            {
+                if (typeAttr->typekind == TKIND_INTERFACE &&
+                    typeAttr->wTypeFlags & TYPEFLAG_FDUAL)
+                {
+                    HREFTYPE refDispatch;
+                    if (!SUCCEEDED(spType->GetRefTypeOfImplType(::sal::static_int_cast< UINT, int >( -1 ), &refDispatch)))
+                    {
+                        throw BridgeRuntimeError(
+                            "[automation bridge] Could not obtain type information "
+                            "for dispatch interface." );
+                    }
+                    CComPtr<ITypeInfo> spTypeDisp;
+                    if (SUCCEEDED(spType->GetRefTypeInfo(refDispatch, & spTypeDisp)))
+                        m_spTypeInfo= spTypeDisp;
+                }
+                else if (typeAttr->typekind == TKIND_DISPATCH)
+                {
+                    m_spTypeInfo= spType;
+                }
+                else
+                {
+                    throw BridgeRuntimeError(
+                        "[automation bridge] Automation object does not "
+                        "provide type information.");
+                }
+            }
+        }
+    }
+    return m_spTypeInfo;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */