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diff --git a/xmloff/source/forms/ifacecompare.hxx b/xmloff/source/forms/ifacecompare.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef _XMLOFF_FORMS_IFACECOMPARE_HXX_
+#define _XMLOFF_FORMS_IFACECOMPARE_HXX_
+
+#include <comphelper/stl_types.hxx>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/drawing/XDrawPage.hpp>
+
+//.........................................................................
+namespace xmloff
+{
+//.........................................................................
+
+    //=====================================================================
+    //= OInterfaceCompare
+    //=====================================================================
+    /** is stl-compliant structure for comparing Reference&lt; &lt;iface&gt; &gt; instances
+    */
+    template < class IAFCE >
+    struct OInterfaceCompare
+        :public ::std::binary_function  <   ::com::sun::star::uno::Reference< IAFCE >
+                                        ,   ::com::sun::star::uno::Reference< IAFCE >
+                                        ,   bool
+                                        >
+    {
+        bool operator() (const ::com::sun::star::uno::Reference< IAFCE >& lhs, const ::com::sun::star::uno::Reference< IAFCE >& rhs) const
+        {
+            return lhs.get() < rhs.get();
+                // this does not make any sense if you see the semantics of the pointer returned by get:
+                // It's a pointer to a point in memory where an interface implementation lies.
+                // But for our purpose (provide a reliable less-operator which can be used with the STL), this is
+                // sufficient ....
+        }
+    };
+
+    typedef OInterfaceCompare< ::com::sun::star::beans::XPropertySet >  OPropertySetCompare;
+    typedef OInterfaceCompare< ::com::sun::star::drawing::XDrawPage >   ODrawPageCompare;
+
+//.........................................................................
+}   // namespace xmloff
+//.........................................................................
+
+#endif // _XMLOFF_FORMS_IFACECOMPARE_HXX_
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */