310 lines
9.2 KiB
C
310 lines
9.2 KiB
C
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1993.
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//
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// File: clipdata.h
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//
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// Contents: Declaration of the clipboard data object.
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//
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// Classes: CClipDataObject
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//
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// Functions:
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//
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// History: dd-mmm-yy Author Comment
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// 01-Feb-95 t-ScottH added Dump methods to CClipDataObject
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// and CClipEnumFormatEtc
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// 31-Mar-94 alexgo author
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//
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//--------------------------------------------------------------------------
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#ifdef _DEBUG
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#include <dbgexts.h>
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#endif // _DEBUG
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#ifndef _CLIPDATA_H
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#define _CLIPDATA_H
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typedef enum
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{
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RESET_AND_FREE = 1,
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JUST_RESET = 2
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} FreeResourcesFlags;
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typedef enum
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{
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FORMAT_NOTFOUND = 1,
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FORMAT_BADMATCH = 2,
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FORMAT_GOODMATCH = 4
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} FormatMatchFlag;
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// format for an array for FormatEtcs in memory.
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struct FORMATETCDATA
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{
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FORMATETC _FormatEtc;
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BOOL fSaveOnFlush; // set to true in Clipboard case if format is valid after OleFlushClipboard.
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DWORD dwReserved1;
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DWORD dwReserved2;
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};
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#define FETC_OFFER_OLE1 1
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#define FETC_OFFER_OBJLINK 2
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#define FETC_PERSIST_DATAOBJ_ON_FLUSH 4
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struct FORMATETCDATAARRAY
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{
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DWORD _dwSig; // must be zero.
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DWORD _dwSize; // total size of structure.
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ULONG _cRefs; // Number of references held on Data.
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DWORD _cFormats; // number of formats in the enumerator.
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DWORD _dwMiscArrayFlags;
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BOOL _fIs64BitArray;
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FORMATETCDATA _FormatEtcData[1];
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};
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//
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// Methods and types used for 32/64 bit FORMATETC interop
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//
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#ifdef _WIN64
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#define IS_WIN64 TRUE
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#else
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#define IS_WIN64 FALSE
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#endif
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void GetCopiedFormatEtcDataArraySize (
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FORMATETCDATAARRAY* pClipFormatEtcDataArray,
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size_t* pstSize
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);
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void CopyFormatEtcDataArray (
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FORMATETCDATAARRAY* pClipFormatEtcDataArray,
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FORMATETCDATAARRAY* pFormatEtcDataArray,
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size_t stSize,
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BOOL bCheckAvailable
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);
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typedef struct FARSTRUCT tagFORMATETC32
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{
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CLIPFORMAT cfFormat;
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ULONG ptd;
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DWORD dwAspect;
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LONG lindex;
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DWORD tymed;
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} FORMATETC32, FAR* LPFORMATETC32;
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typedef struct FARSTRUCT tagFORMATETC64
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{
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CLIPFORMAT cfFormat;
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ULONG64 ptd;
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DWORD dwAspect;
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LONG lindex;
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DWORD tymed;
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} FORMATETC64, FAR* LPFORMATETC64;
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struct FORMATETCDATA32
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{
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FORMATETC32 _FormatEtc;
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BOOL fSaveOnFlush; // set to true in Clipboard case if format is valid after OleFlushClipboard.
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DWORD dwReserved1;
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DWORD dwReserved2;
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};
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struct FORMATETCDATA64
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{
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FORMATETC64 _FormatEtc;
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BOOL fSaveOnFlush; // set to true in Clipboard case if format is valid after OleFlushClipboard.
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DWORD dwReserved1;
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DWORD dwReserved2;
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};
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struct FORMATETCDATAARRAY32
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{
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DWORD _dwSig; // must be zero.
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DWORD _dwSize; // total size of structure.
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ULONG _cRefs; // Number of references held on Data.
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DWORD _cFormats; // number of formats in the enumerator.
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DWORD _dwMiscArrayFlags;
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BOOL _fIs64BitArray;
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FORMATETCDATA32 _FormatEtcData[1];
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};
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struct FORMATETCDATAARRAY64
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{
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DWORD _dwSig; // must be zero.
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DWORD _dwSize; // total size of structure.
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ULONG _cRefs; // Number of references held on Data.
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DWORD _cFormats; // number of formats in the enumerator.
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DWORD _dwMiscArrayFlags;
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BOOL _fIs64BitArray;
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FORMATETCDATA64 _FormatEtcData[1];
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};
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//+-------------------------------------------------------------------------
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//
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// Class: CClipDataObject
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//
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// Purpose: clipboard data object
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//
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// Interface: IDataObject
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//
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// History: dd-mmm-yy Author Comment
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// 01-Feb-95 t-ScottH added Dump method (_DEBUG only)
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// 04-Jun-94 alexgo added OLE1 support
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// 31-Mar-94 alexgo author
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//
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// Notes: See clipdata.cpp for a description of OLE1 support
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//
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//--------------------------------------------------------------------------
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class CClipDataObject : public IDataObject, public CPrivAlloc,
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public CThreadCheck
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{
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friend void ClipboardUninitialize(void);
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friend void SetClipDataObjectInTLS(IDataObject *pDataObj,
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DWORD dwClipSeqNum, BOOL fIsClipWrapper);
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friend void GetClipDataObjectFromTLS(IDataObject **ppDataObj);
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// HACK ALERT!!!
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// MFC was being slimy, so we have to special case testing against clipboard data
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// objects in OleQueryCreateFromData. See create.cpp,
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// wQueryEmbedFormats for more details.
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friend WORD wQueryEmbedFormats( LPDATAOBJECT lpSrcDataObj,CLIPFORMAT FAR* lpcfFormat);
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public:
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// IUnknown methods
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STDMETHOD(QueryInterface) (REFIID riid, LPVOID FAR* ppvObj);
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STDMETHOD_(ULONG,AddRef) (void);
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STDMETHOD_(ULONG,Release) (void);
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// IDataObject methods
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STDMETHOD(GetData) (LPFORMATETC pformatetcIn, LPSTGMEDIUM pmedium);
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STDMETHOD(GetDataHere) (LPFORMATETC pformatetc,
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LPSTGMEDIUM pmedium);
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STDMETHOD(QueryGetData) (LPFORMATETC pformatetc);
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STDMETHOD(GetCanonicalFormatEtc) (LPFORMATETC pformatetc,
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LPFORMATETC pformatetcOut);
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STDMETHOD(SetData) (LPFORMATETC pformatetc,
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STGMEDIUM FAR* pmedium, BOOL fRelease);
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STDMETHOD(EnumFormatEtc) (DWORD dwDirection,
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LPENUMFORMATETC FAR* ppenumFormatEtc);
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STDMETHOD(DAdvise) (FORMATETC FAR* pFormatetc, DWORD advf,
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IAdviseSink FAR* pAdvSink, DWORD FAR* pdwConnection);
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STDMETHOD(DUnadvise) (DWORD dwConnection);
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STDMETHOD(EnumDAdvise) (LPENUMSTATDATA FAR* ppenumAdvise);
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static HRESULT CClipDataObject::Create(IDataObject **ppDataObj,
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FORMATETCDATAARRAY *pClipFormatEtcDataArray);
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#ifdef _DEBUG
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HRESULT Dump(char **ppszDump, ULONG ulFlag, int nIndentLevel);
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// need to be able to access CClipDataObject private data members in the
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// following debugger extension APIs
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// this allows the debugger extension APIs to copy memory from the
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// debuggee process memory to the debugger's process memory
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// this is required since the Dump method follows pointers to other
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// structures and classes
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friend DEBUG_EXTENSION_API(dump_clipdataobject);
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#endif // _DEBUG
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private:
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CClipDataObject(); // constructor
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~CClipDataObject(); // destructor
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ULONG InternalAddRef(); // ensure object stays around as long as OLE thinks it should.
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ULONG InternalRelease();
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IDataObject * GetRealDataObjPtr(); // Get real data object for clipboard
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HRESULT GetFormatEtcDataArray(); //checks is have a FormatEtcDataArray, if not creates one from the Native Clipboard.
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FormatMatchFlag MatchFormatetc( FORMATETC *pformatetc,BOOL fNativeOnly, TYMED *ptymed );
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// checks the given formatetc against
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// the formatetc we know about.
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// the following methods and data items are used for OLE1
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// support
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void FreeResources( FreeResourcesFlags fFlags );
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HRESULT GetAndTranslateOle1( UINT cf, LPOLESTR *ppszClass,
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LPOLESTR *ppszFile, LPOLESTR *ppszItem,
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LPSTR *ppszItemA );
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HRESULT GetEmbeddedObjectFromOle1( STGMEDIUM *pmedium );
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HRESULT GetEmbedSourceFromOle1( STGMEDIUM *pmedium );
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HRESULT GetLinkSourceFromOle1( STGMEDIUM *pmedium );
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HRESULT GetObjectDescriptorFromOle1( UINT cf,
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STGMEDIUM *pmedium );
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HRESULT GetOle2FromOle1( UINT cf, STGMEDIUM *pmedium );
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HRESULT OleGetClipboardData( UINT cf, HANDLE *pHandle );
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BOOL OleIsClipboardFormatAvailable( UINT cf );
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HGLOBAL m_hOle1; // hGlobal to OLE2 data constructed
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// from OLE1 data
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IUnknown * m_pUnkOle1; // IUnknown to either a storage or
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// a stream of OLE1 data
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// end of OLE1 support
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ULONG m_refs; // reference count
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ULONG m_Internalrefs; // Internal Reference Count
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FORMATETCDATAARRAY *m_pFormatEtcDataArray; // Enumerator Data.
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IDataObject * m_pDataObject; // Actual data object for data.
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BOOL m_fTriedToGetDataObject;
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// indicates whether or not we've
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// tried to get the real IDataObject
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// from the clipboard source
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// (see GetDataObjectForClip)
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};
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//+-------------------------------------------------------------------------
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//
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// Class: CEnumFormatEtcDataArray
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//
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// Purpose: Enumerator for the formats available on the clipboard
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// and in DragDrop.
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//
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// Interface: IEnumFORMATETC
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//
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// History: dd-mmm-yy Author Comment
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// 30-Sep-96 rogerg created base on CClipEnumFormatEtc
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//
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// Notes:
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//
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//--------------------------------------------------------------------------
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class CEnumFormatEtcDataArray :public IEnumFORMATETC, public CPrivAlloc,
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public CThreadCheck
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{
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public:
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STDMETHOD(QueryInterface)(REFIID riid, LPLPVOID ppvObj);
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STDMETHOD_(ULONG,AddRef)(void);
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STDMETHOD_(ULONG,Release)(void);
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STDMETHOD(Next) (ULONG celt, FORMATETC *rgelt,
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ULONG *pceltFetched);
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STDMETHOD(Skip) (ULONG celt);
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STDMETHOD(Reset) (void);
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STDMETHOD(Clone) (IEnumFORMATETC **ppenum);
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CEnumFormatEtcDataArray(FORMATETCDATAARRAY *pFormatEtcDataArray,DWORD cOffset);
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private:
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~CEnumFormatEtcDataArray(); // destructor
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ULONG m_refs; // reference count
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ULONG m_cOffset; // current clipboard format
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FORMATETCDATAARRAY * m_pFormatEtcDataArray;
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};
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#endif // !_CLIPDATA_H
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