77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
//---------------------------------------------------------------------------
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// Stream.h : CVDStream header file
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//
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// Copyright (c) 1996 Microsoft Corporation, All Rights Reserved
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// Developed by Sheridan Software Systems, Inc.
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//---------------------------------------------------------------------------
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#ifndef __CVDSTREAM__
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#define __CVDSTREAM__
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#ifndef VD_DONT_IMPLEMENT_ISTREAM
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interface IStreamEx : public IStream
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{
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public:
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virtual /* [local] */ HRESULT __stdcall CopyFrom(
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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 *pcbWritten,
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/* [out] */ ULARGE_INTEGER __RPC_FAR *pcbRead) = 0;
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};
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class CVDStream : public IStreamEx
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{
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protected:
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// Construction/Destruction
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CVDStream();
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virtual ~CVDStream();
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public:
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static HRESULT Create(CVDEntryIDData * pEntryIDData, IStream * pStream, CVDStream ** ppVDStream,
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CVDResourceDLL * pResourceDLL);
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protected:
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// Data members
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DWORD m_dwRefCount; // reference count
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CVDEntryIDData * m_pEntryIDData; // backwards pointer to CVDEntryIDData
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IStream * m_pStream; // data stream pointer
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CVDResourceDLL * m_pResourceDLL; // resource DLL
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public:
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//=--------------------------------------------------------------------------=
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// IUnknown methods
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//
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STDMETHOD(QueryInterface)(REFIID riid, void **ppvObjOut);
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STDMETHOD_(ULONG, AddRef)(void);
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STDMETHOD_(ULONG, Release)(void);
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//=--------------------------------------------------------------------------=
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// IStream methods
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//
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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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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)(void);
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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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//=--------------------------------------------------------------------------=
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// IStreamEx method
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//
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STDMETHOD(CopyFrom)(IStream *pstm, ULARGE_INTEGER cb, ULARGE_INTEGER *pcbWritten, ULARGE_INTEGER *pcbRead);
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};
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#endif //VD_DONT_IMPLEMENT_ISTREAM
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#endif //__CVDSTREAM__
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