136 lines
3.4 KiB
C
136 lines
3.4 KiB
C
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// Stream.h -- Definition for the class CStream
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#ifndef __STREAM_H__
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#define __STREAM_H__
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class CStream : public CITUnknown
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{
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public:
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static HRESULT OpenStream(IUnknown *punkOuter, ILockBytes *pLockBytes,
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DWORD grfMode, IStreamITEx **ppStream
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);
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~CStream(void);
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// IUnknown methods:
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private:
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CStream(IUnknown *pUnkOuter);
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class CImpIStream : public IITStreamITEx
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{
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public:
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CImpIStream(CStream *pBackObj, IUnknown *punkOuter);
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~CImpIStream(void);
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HRESULT InitOpenStream(ILockBytes *pLockBytes, DWORD grfMode);
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// ISequentialStream methods
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/* [local] */ HRESULT __stdcall Read(
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/* [out] */ void __RPC_FAR *pv,
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/* [in] */ ULONG cb,
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/* [out] */ ULONG __RPC_FAR *pcbRead);
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/* [local] */ HRESULT __stdcall Write(
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/* [size_is][in] */ const void __RPC_FAR *pv,
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/* [in] */ ULONG cb,
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/* [out] */ ULONG __RPC_FAR *pcbWritten);
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// IStream methods:
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/* [local] */ HRESULT __stdcall Seek(
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/* [in] */ LARGE_INTEGER dlibMove,
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/* [in] */ DWORD dwOrigin,
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/* [out] */ ULARGE_INTEGER __RPC_FAR *plibNewPosition) ;
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HRESULT __stdcall SetSize(
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/* [in] */ ULARGE_INTEGER libNewSize);
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/* [local] */ HRESULT __stdcall CopyTo(
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/* [unique][in] */ IStream __RPC_FAR *pstm,
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/* [in] */ ULARGE_INTEGER cb,
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/* [out] */ ULARGE_INTEGER __RPC_FAR *pcbRead,
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/* [out] */ ULARGE_INTEGER __RPC_FAR *pcbWritten);
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HRESULT __stdcall Commit(
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/* [in] */ DWORD grfCommitFlags);
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HRESULT __stdcall Revert( void);
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HRESULT __stdcall LockRegion(
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/* [in] */ ULARGE_INTEGER libOffset,
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/* [in] */ ULARGE_INTEGER cb,
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/* [in] */ DWORD dwLockType);
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HRESULT __stdcall UnlockRegion(
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/* [in] */ ULARGE_INTEGER libOffset,
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/* [in] */ ULARGE_INTEGER cb,
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/* [in] */ DWORD dwLockType);
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HRESULT __stdcall Stat(
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/* [out] */ STATSTG __RPC_FAR *pstatstg,
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/* [in] */ DWORD grfStatFlag);
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HRESULT __stdcall Clone(
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/* [out] */ IStream __RPC_FAR *__RPC_FAR *ppstm);
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// IStreamITEx methods:
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HRESULT STDMETHODCALLTYPE SetDataSpaceName(const WCHAR * pwcsDataSpaceName);
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HRESULT STDMETHODCALLTYPE GetDataSpaceName( WCHAR **ppwcsDataSpaceName);
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HRESULT STDMETHODCALLTYPE Flush();
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private:
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enum { CB_MAX_COPY_SEGMENT = 8192 };
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ILockBytes *m_pLockBytes;
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CULINT m_ullStreamPosition;
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DWORD m_grfMode;
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CITCriticalSection m_cs;
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};
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CImpIStream m_ImpIStream;
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};
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typedef CStream *PCStream;
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extern GUID aIID_CStream[];
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extern UINT cInterfaces_CStream;
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inline CStream::CStream(IUnknown *pUnkOuter)
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: m_ImpIStream(this, pUnkOuter),
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CITUnknown(aIID_CStream, cInterfaces_CStream, &m_ImpIStream)
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{
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}
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inline CStream::~CStream(void)
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{
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}
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inline CStream::CImpIStream::CImpIStream(CStream *pBackObj, IUnknown *pUnkOuter)
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: IITStreamITEx(pBackObj, pUnkOuter)
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{
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m_ullStreamPosition = 0;
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m_pLockBytes = NULL;
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}
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inline CStream::CImpIStream::~CImpIStream(void)
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{
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if (m_pLockBytes)
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m_pLockBytes->Release();
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}
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#endif // __STREAM_H__
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