filestream.h

来自「Windows CE 6.0 Server 源码」· C头文件 代码 · 共 69 行

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this source code is subject to the terms of the Microsoft shared
// source or premium shared source license agreement under which you licensed
// this source code. If you did not accept the terms of the license agreement,
// you are not authorized to use this source code. For the terms of the license,
// please see the license agreement between you and Microsoft or, if applicable,
// see the SOURCE.RTF on your install media or the root of your tools installation.
// THE SOURCE CODE IS PROVIDED "AS IS", WITH NO WARRANTIES.
//
//+----------------------------------------------------------------------------
//
//
// File:
//      FileStream.h
//
// Contents:
//
//      CFileStream class declaration - file wrapper class
//
//-----------------------------------------------------------------------------

#ifndef __FILESTREAM_H_INCLUDED__
#define __FILESTREAM_H_INCLUDED__

class CFileStream : public IStream
{
private:
    HANDLE  m_hFile;

protected:
    CFileStream();
    ~CFileStream();

public:

    HRESULT Initialize(HANDLE hFile);
    HRESULT Initialize(LPCWSTR lpFileName, DWORD dwAccess, DWORD dwShare, DWORD dwCreation, DWORD dwFlags);

public:

    //
    // ISequentialStream
    //

    STDMETHOD(Read)(void *pv, ULONG cb, ULONG *pcbRead);
    STDMETHOD(Write)(const void *pv, ULONG cb, ULONG *pcbWritten);

    //
    // IStream
    //

    STDMETHOD(Seek)(LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER *plibNewPosition);
    STDMETHOD(SetSize)(ULARGE_INTEGER libNewSize);
    STDMETHOD(CopyTo)(IStream *pstm, ULARGE_INTEGER cb, ULARGE_INTEGER *pcbRead, ULARGE_INTEGER *pcbWritten);
    STDMETHOD(Commit)(DWORD grfCommitFlags);
    STDMETHOD(Revert)(void);
    STDMETHOD(LockRegion)(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType);
    STDMETHOD(UnlockRegion)(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType);
    STDMETHOD(Stat)(STATSTG *pstatstg, DWORD grfStatFlag);
    STDMETHOD(Clone)(IStream **ppstm);

    DECLARE_INTERFACE_MAP;
};

#endif //__FILESTREAM_H_INCLUDED__