vcl/win/dtrans/APNDataObject.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #if !defined WIN32_LEAN_AND_MEAN
  23 # define WIN32_LEAN_AND_MEAN
  24 #endif
  25 #include <objidl.h>
  26
  27 #include <systools/win32/comtools.hxx>
  28
  29 /*
  30     an APartment Neutral dataobject wrapper; this wrapper of an IDataObject
  31     pointer can be used from any apartment without RPC_E_WRONG_THREAD
  32     which normally occurs if an apartment tries to use an interface
  33     pointer of another apartment; we use containment to hold the original
  34     DataObject
  35 */
  36 class CAPNDataObject : public IDataObject
  37 {
  38 public:
  39     explicit CAPNDataObject(IDataObjectPtr rIDataObject);
  40     virtual ~CAPNDataObject();
  41
  42     //IUnknown interface methods
  43
  44     STDMETHODIMP           QueryInterface(REFIID iid, void** ppvObject) override;
  45     STDMETHODIMP_( ULONG ) AddRef( ) override;
  46     STDMETHODIMP_( ULONG ) Release( ) override;
  47
  48     // IDataObject interface methods
  49
  50     STDMETHODIMP GetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) override;
  51     STDMETHODIMP GetDataHere( FORMATETC * pFormatetc, STGMEDIUM * pmedium ) override;
  52     STDMETHODIMP QueryGetData( FORMATETC * pFormatetc ) override;
  53     STDMETHODIMP GetCanonicalFormatEtc( FORMATETC * pFormatectIn, FORMATETC * pFormatetcOut ) override;
  54     STDMETHODIMP SetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium, BOOL fRelease ) override;
  55     STDMETHODIMP EnumFormatEtc( DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc ) override;
  56     STDMETHODIMP DAdvise( FORMATETC * pFormatetc, DWORD advf, IAdviseSink * pAdvSink, DWORD* pdwConnection ) override;
  57     STDMETHODIMP DUnadvise( DWORD dwConnection ) override;
  58     STDMETHODIMP EnumDAdvise( IEnumSTATDATA** ppenumAdvise ) override;
  59
  60 private:
  61     HRESULT MarshalIDataObjectIntoCurrentApartment( IDataObject** ppIDataObj );
  62
  63 private:
  64     IDataObjectPtr  m_rIDataObjectOrg;
  65     HGLOBAL         m_hGlobal;
  66     LONG            m_nRefCnt;
  67
  68 // prevent copy and assignment
  69 private:
  70     CAPNDataObject( const CAPNDataObject& theOther ) = delete;
  71     CAPNDataObject& operator=( const CAPNDataObject& theOther ) = delete;
  72 };
  73
  74 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */