开通博客赚积分
发布资源赚积分
分类

源码开发语言/平台
当前位置：首页 > 源码/资料 > Windows编程 > 查看源码
XPSOF.H
资源名称：MSDN_VC98.zip　[点击查看]
上传用户：bangxh
上传日期：2007-01-31
资源大小：42235k
文件大小：5k
源码类别：

Windows编程

开发平台：

Visual C++

XPSOF.H：源码内容
  1. /*
  2.  -  X P S O F . H
  3.  -
  4.  *  Purpose:
  5.  *      Wraps the StreamOnFile object to add buffering of the stream.
  6.  *      The wrappered version uses an in-memory buffer, or cache, to 
  7.  *      reduce the number of actual Reads and Writes to the underlying 
  8.  *      stream.  The goal is, obviously, to improve performance.  
  9.  *
  10.  *  Copyright 1992-1995, Microsoft Corporation.  All Rights Reserved.
  11.  */
  14. #define XPSOF_BUFF_MAX      ((ULONG) 1024)
  16. #define XPSOF_READ          ((ULONG) 0x00000001)
  17. #define XPSOF_WRITE         ((ULONG) 0x00000002)
  18. #define XPSOF_READWRITE     ((ULONG) 0x00000003)
  20. /* Creates the wrapped SOF object */
  22. STDMETHODIMP HrWrapStreamOnFile(
  23.     LPALLOCATEBUFFER    lpAllocBuffer,
  24.     LPFREEBUFFER        lpFreeBuffer,
  25.     ULONG               ulFlags,
  26.     LPSTREAM            lpStream,
  27.     LPSTREAM *          lppWrappedStream);
  30. /* IStream Interface */
  32. #define MAPI_ISTREAM_METHODS(IPURE)                                     
  33.     MAPIMETHOD(Read)                                                    
  34.         (THIS_  VOID HUGEP *                lpv,                        
  35.                 ULONG                       cb,                         
  36.                 ULONG FAR *                 lpcbRead) IPURE;            
  37.     MAPIMETHOD(Write)                                                   
  38.         (THIS_  VOID const HUGEP *          lpv,                        
  39.                 ULONG                       cb,                         
  40.                 ULONG FAR *                 lpcbWritten) IPURE;         
  41.     MAPIMETHOD(Seek)                                                    
  42.         (THIS_  LARGE_INTEGER               libMove,                    
  43.                 DWORD                       dwOrigin,                   
  44.                 ULARGE_INTEGER FAR *        lplibNewPosition) IPURE;    
  45.     MAPIMETHOD(SetSize)                                                 
  46.         (THIS_  ULARGE_INTEGER              libNewSize) IPURE;          
  47.     MAPIMETHOD(CopyTo)                                                  
  48.         (THIS_  IStream FAR *               lpstm,                      
  49.                 ULARGE_INTEGER              cb,                         
  50.                 ULARGE_INTEGER FAR *        lpcbRead,                   
  51.                 ULARGE_INTEGER FAR *        lpcbWritten) IPURE;         
  52.     MAPIMETHOD(Commit)                                                  
  53.         (THIS_  DWORD                       dwCommitFlags) IPURE;       
  54.     MAPIMETHOD(Revert)                                                  
  55.         (THIS)                              IPURE;                      
  56.     MAPIMETHOD(LockRegion)                                              
  57.         (THIS_  ULARGE_INTEGER              libOffset,                  
  58.                 ULARGE_INTEGER              cb,                         
  59.                 DWORD                       dwLockType) IPURE;          
  60.     MAPIMETHOD(UnlockRegion)                                            
  61.         (THIS_  ULARGE_INTEGER              ulibOffset,                 
  62.                 ULARGE_INTEGER              cb,                         
  63.                 DWORD                       dwLockType) IPURE;          
  64.     MAPIMETHOD(Stat)                                                    
  65.         (THIS_  STATSTG FAR *               lpstatstg,                  
  66.                 DWORD                       dwStatFlag) IPURE;          
  67.     MAPIMETHOD(Clone)                                                   
  68.         (THIS_  IStream FAR * FAR *         lppstm) IPURE;              
  71. /* Interface declaration */
  73. #undef  INTERFACE
  74. #define INTERFACE struct _XPSOF
  75. #undef  MAPIMETHOD_
  76. #define MAPIMETHOD_(type, method)   MAPIMETHOD_DECLARE(type, method, XPSOF_)
  77.         MAPI_IUNKNOWN_METHODS(IMPL)
  78.         MAPI_ISTREAM_METHODS(IMPL)
  79. #undef  MAPIMETHOD_
  80. #define MAPIMETHOD_(type, method)   MAPIMETHOD_TYPEDEF(type, method, XPSOF_)
  81.         MAPI_IUNKNOWN_METHODS(IMPL)
  82.         MAPI_ISTREAM_METHODS(IMPL)
  83. #undef  MAPIMETHOD_
  84. #define MAPIMETHOD_(type, method)   STDMETHOD_(type, method)
  86. DECLARE_MAPI_INTERFACE(XPSOF_)
  87. {
  88.     MAPI_IUNKNOWN_METHODS(IMPL)
  89.     MAPI_ISTREAM_METHODS(IMPL)
  90. };
  92. typedef struct _XPSOF
  93. {
  94.     XPSOF_Vtbl *        lpVtbl;
  95.     LONG                lcInit;
  96.     ULONG               ulFlags;
  97.     LPSTREAM            lpstrm;
  98.     LPVOID              lpvBuff;
  99.     ULONG               libBuff;
  100.     ULONG               cbBuffMac;
  101.     BOOL                fDirty;
  102.     LPFREEBUFFER        FreeBuffer;
  104. } XPSOF, FAR * LPXPSOF;