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diff --git a/fpicker/source/win32/FilterContainer.hxx b/fpicker/source/win32/FilterContainer.hxx
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+++ b/fpicker/source/win32/FilterContainer.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+#include <rtl/ustring.hxx>
+
+#include <vector>
+
+
+// helper class, only usable by OFilterContainer
+
+
+class CFilterContainer
+{
+public:
+    // defines a filter entry which is made of a name and a filter value
+    // e.g. 'Text *.txt'
+    typedef std::pair< OUString, OUString > FILTER_ENTRY_T;
+
+public:
+    explicit CFilterContainer( sal_Int32 initSize = 0 );
+
+    // add a new filter
+    // returns true if the filter was successfully added
+    // returns false if duplicates are not allowed and
+    // the filter is already in the container
+    bool addFilter(
+        const OUString& aName,
+        const OUString& aFilter,
+        bool bAllowDuplicates = false );
+
+    // delete the specified filter returns true on
+    // success and false if the filter was not found
+    bool delFilter( const OUString& aName );
+
+    // the number of filter already added
+    sal_Int32 numFilter( );
+
+    // clear all entries
+    void empty( );
+
+    // retrieve a filter from the container. These methods
+    // return true on success and false if the specified
+    // filter was not found
+    bool getFilterByName(const OUString& aName, OUString& theFilter) const;
+    bool getFilterByIndex(sal_Int32 aIndex, OUString& theFilter) const;
+    bool getFilterNameByIndex(sal_Int32 aIndex, OUString& theName) const;
+
+    // returns the position of the specified filter or -1
+    // if the filter was not found
+    sal_Int32 getFilterPos( const OUString& aName ) const;
+
+    // starts enumerating the filter in the container
+    void beginEnumFilter( );
+
+    // returns true if another filter has been retrieved
+    bool getNextFilter( FILTER_ENTRY_T& nextFilterEntry );
+
+    // cache current filter
+    void setCurrentFilter( const OUString& aName );
+
+    // returns cached current filter
+    OUString getCurrentFilter() const;
+
+protected:
+    typedef std::vector< FILTER_ENTRY_T > FILTER_VECTOR_T;
+
+private:
+    // prevent copy and assignment
+    CFilterContainer( const CFilterContainer& );
+    CFilterContainer& SAL_CALL operator=( const CFilterContainer& );
+
+    sal_Int32 getFilterTagPos( const OUString& aName ) const;
+
+private:
+    FILTER_VECTOR_T                 m_vFilters;
+    FILTER_VECTOR_T::const_iterator m_iter;
+    bool                            m_bIterInitialized;
+    OUString                 m_sCurrentFilter;
+};
+
+
+// a helper function to create a filter buffer in the format
+// the Win32 API requires, e.g. "Text\0*.txt\0Doc\0*.doc;*xls\0\0"
+
+
+OUString makeWinFilterBuffer( CFilterContainer& aFilterContainer );
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */