| 术语 | unmapviewoffile |
| 释义 | UnmapViewOfFile 语法： C++ BOOL WINAPI UnmapViewOfFile( __in LPCVOID lpBaseAddress ); UnmapViewOfFile函数 Unmaps一个从调用进程的地址空间映射文件的看法。 参数 lpBaseAddress [in] 是对一个文件是要映射的映射视图基址指针。此值必须相同，因先前调用该MapViewOfFile或MapViewOfFileEx函数的返回值。 返回值 如果函数成功，返回值为非零值，并在指定范围内的所有脏页都写着“懒惰”的磁盘。 如果函数失败，返回值是零。为了获得更多错误信息，调用GetLastError。 备注 虽然一个应用程序可能会关闭该文件用于创建一个文件映射对象句柄，系统持有，直到文件的最后看法是打开相应的文件映射： 该文件的最后意见尚未映射没有持有开放式交流的限制。 实例 有关示例，请参见创建在一个文件视图。 要求： 最低支持：client－Windows 2000专业版 最低支持server－Windows 2000服务器 HeaderWinbase.h(头文件：winuser.h) LibraryKernel32.lib DLLKernel32.dll 参见 关闭一个文件映射对象 文件映射函数 MapViewOfFile MapViewOfFileEx 内存管理功能 如果有任何问题和意见，请发送给微软(wsddocfb@microsoft.com) 生成日期：2009年8月27日 ＝＝英文原文＝＝UnmapViewOfFile Function Unmaps a mapped view of a file from the calling process's address space. Syntax C++ BOOL WINAPI UnmapViewOfFile( __in LPCVOID lpBaseAddress ); Parameters lpBaseAddress [in] A pointer to the base address of the mapped view of a file that is to be unmapped. This value must be identical to the value returned by a previous call to the MapViewOfFile or MapViewOfFileEx function. Return Value If the function succeeds, the return value is nonzero, and all dirty pages within the specified range are written "lazily" to disk. If the function fails, the return value is zero. To get extended error information, call GetLastError . Remarks Although an application may close the file handle used to create a file mapping object, the system holds the corresponding file open until the last view of the file is unmapped: Files for which the last view has not yet been unmapped are held open with no sharing restrictions. Examples For an example, see Creating a View Within a File . Requirements Minimum supported clientWindows 2000 Professional Minimum supported serverWindows 2000 Server HeaderWinbase.h (include Windows.h) LibraryKernel32.lib DLLKernel32.dll See Also Closing a File Mapping Object File Mapping Functions MapViewOfFile MapViewOfFileEx Memory Management Functions Send comments about this topic to Microsoft Build date: 8/27/2009 ＝＝原始网址＝＝http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx\n |
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