51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
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#ifndef _BMPSTRM_H_
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#define _BMPSTRM_H_
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class CBmpStream : public IStream
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{
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protected:
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CBmpStream();
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~CBmpStream();
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public:
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static HRESULT Create(CBmpStream **ppvObject);
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HGLOBAL GetBuffer();
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VOID SetBuffer(HGLOBAL hBuffer, DWORD dwSize, DWORD dwOffBits);
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VOID FreeBuffer();
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HRESULT ReAllocBuffer(SIZE_T dwBytes);
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public:
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// IUnknown
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STDMETHOD(QueryInterface)(REFIID riid, void **ppvObject);
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STDMETHOD_(ULONG, AddRef)();
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STDMETHOD_(ULONG, Release)();
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// ISequentialStream
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STDMETHOD(Read)(void *pv, ULONG cb, ULONG *pcbRead);
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STDMETHOD(Write)(const void *pv, ULONG cb, ULONG *pcbWritten);
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// IStream
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STDMETHOD(Seek)(LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER *plibNewPosition);
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STDMETHOD(SetSize)(ULARGE_INTEGER libNewSize);
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STDMETHOD(CopyTo)(IStream *pstm, ULARGE_INTEGER cb, ULARGE_INTEGER *pcbRead, ULARGE_INTEGER *pcbWritten);
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STDMETHOD(Commit)(DWORD grfCommitFlags);
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STDMETHOD(Revert)();
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STDMETHOD(LockRegion)(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType);
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STDMETHOD(UnlockRegion)(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType);
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STDMETHOD(Stat)(STATSTG *pstatstg, DWORD grfStatFlag);
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STDMETHOD(Clone)(IStream **ppstm);
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private:
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LONG m_cRef;
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HGLOBAL m_hBuffer;
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SIZE_T m_nSize;
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SIZE_T m_nPosition;
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BITMAPFILEHEADER m_Header;
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};
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#endif //_BMPSTRM_H_
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