dtrans/source/win32/dtobj/APNDataObject.hxx

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  30
  31
  32 #ifndef _APNDATAOBJECT_HXX_
  33 #define _APNDATAOBJECT_HXX_
  34
  35 #include <systools/win32/comtools.hxx>
  36
  37 //------------------------------------------------------------------------
  38 // deklarations
  39 //------------------------------------------------------------------------
  40
  41 /*
  42     an APartment Neutral dataobject wrapper; this wrapper of a IDataObject
  43     pointer can be used from any apartment without RPC_E_WRONG_THREAD
  44     which normally occurs if an apartment tries to use an interface
  45     pointer of another apartment; we use containment to hold the original
  46     DataObject
  47 */
  48 class CAPNDataObject : public IDataObject
  49 {
  50 public:
  51     CAPNDataObject( IDataObjectPtr rIDataObject );
  52     virtual ~CAPNDataObject( );
  53
  54     //-----------------------------------------------------------------
  55     //IUnknown interface methods
  56     //-----------------------------------------------------------------
  57
  58     STDMETHODIMP           QueryInterface(REFIID iid, LPVOID* ppvObject);
  59     STDMETHODIMP_( ULONG ) AddRef( );
  60     STDMETHODIMP_( ULONG ) Release( );
  61
  62     //-----------------------------------------------------------------
  63     // IDataObject interface methods
  64     //-----------------------------------------------------------------
  65
  66     STDMETHODIMP GetData( LPFORMATETC pFormatetc, LPSTGMEDIUM pmedium );
  67     STDMETHODIMP GetDataHere( LPFORMATETC pFormatetc, LPSTGMEDIUM pmedium );
  68     STDMETHODIMP QueryGetData( LPFORMATETC pFormatetc );
  69     STDMETHODIMP GetCanonicalFormatEtc( LPFORMATETC pFormatectIn, LPFORMATETC pFormatetcOut );
  70     STDMETHODIMP SetData( LPFORMATETC pFormatetc, LPSTGMEDIUM pmedium, BOOL fRelease );
  71     STDMETHODIMP EnumFormatEtc( DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc );
  72     STDMETHODIMP DAdvise( LPFORMATETC pFormatetc, DWORD advf, LPADVISESINK pAdvSink, DWORD* pdwConnection );
  73     STDMETHODIMP DUnadvise( DWORD dwConnection );
  74     STDMETHODIMP EnumDAdvise( LPENUMSTATDATA* ppenumAdvise );
  75
  76     operator IDataObject*( );
  77
  78 private:
  79     HRESULT MarshalIDataObjectIntoCurrentApartment( IDataObject** ppIDataObj );
  80
  81 private:
  82     IDataObjectPtr  m_rIDataObjectOrg;
  83     HGLOBAL                     m_hGlobal;
  84     LONG                        m_nRefCnt;
  85
  86 // prevent copy and assignment
  87 private:
  88     CAPNDataObject( const CAPNDataObject& theOther );
  89     CAPNDataObject& operator=( const CAPNDataObject& theOther );
  90 };
  91
  92 #endif