subject_39763.htm

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序号：39763 发表者：蓝蜻蜓 发表日期：2003-05-13 16:03:40
<br>主题：win32的函数说明哪里可以找到
<br>内容：msdn中似乎没有
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回复者：无量 回复日期：2003-05-13 16:15:18
<br>内容：在http://www.microsoft.com/msdownload/platformsdk/sdkupdate/下载，MS Platform SDK包就有你要的信息。
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回复者：很土 回复日期：2003-05-13 16:16:48
<br>内容：怎么会没有<BR>MSDN除了个别几个函数的确是找不到之外.(MS没有公布文档)<BR>其他基本上都会有.<BR>除非你的MSDN版本过于老旧.<BR>你要找什么函数,帮你看看<BR><BR>
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回复者：碧落 回复日期：2003-05-13 16:26:56
<br>内容：你去网上找照windows API大全这本书，里面说的很详细。<BR>
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回复者：蓝蜻蜓 回复日期：2003-05-13 16:51:32
<br>内容：GetFileSize<BR>这个函数只有申明，没有详细说明
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<font color=red>答案被接受</font><br>回复者：很土 回复日期：2003-05-13 17:06:42
<br>内容：Platform SDK: Storage <BR>GetFileSize<BR><BR>The GetFileSize function retrieves the size of a specified file.<BR><BR>This function stores the file size in a DWORD value. To retrieve a file size that is larger than a DWORD value, use the GetFileSizeEx function.<BR><BR><BR>DWORD GetFileSize(<BR>&nbsp;&nbsp;HANDLE hFile,<BR>&nbsp;&nbsp;LPDWORD lpFileSizeHigh<BR>);<BR><BR>Parameters<BR>hFile <BR>[in] Handle to the file whose size is to be returned. This handle must have been created with either the GENERIC_READ or GENERIC_WRITE access right. For more information, see File Security and Access Rights. <BR>lpFileSizeHigh <BR>[out] Pointer to the variable where the high-order word of the file size is returned. This parameter can be NULL if the application does not require the high-order word. <BR>Return Values<BR>If the function succeeds, the return value is the low-order doubleword of the file size, and, if lpFileSizeHigh is non-NULL, the function puts the high-order doubleword of the file size into the variable pointed to by that parameter.<BR><BR>If the function fails and lpFileSizeHigh is NULL, the return value is INVALID_FILE_SIZE. To get extended error information, call GetLastError.<BR><BR>If the function fails and lpFileSizeHigh is non-NULL, the return value is INVALID_FILE_SIZE and GetLastError will return a value other than NO_ERROR. <BR><BR>Remarks<BR>You cannot use the GetFileSize function with a handle of a nonseeking device such as a pipe or a communications device. To determine the file type for hFile, use the GetFileType function.<BR><BR>The GetFileSize function retrieves the uncompressed size of a file. Use the GetCompressedFileSize function to obtain the compressed size of a file.<BR><BR>Example Code <BR>Note that if the return value is INVALID_FILE_SIZE and lpFileSizeHigh is non-NULL, an application must call GetLastError to determine whether the function has succeeded or failed. The following sample code illustrates this point:<BR><BR>// Case One: calling the function with <BR>//&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; lpFileSizeHigh == NULL <BR> <BR>// Try to obtain hFile's size <BR>dwSize = GetFileSize (hFile, NULL) ; <BR> <BR>// If we failed ... <BR>if (dwSize == INVALID_FILE_SIZE) <BR>{ <BR>&nbsp;&nbsp;&nbsp;&nbsp;// Obtain the error code. <BR>&nbsp;&nbsp;&nbsp;&nbsp;dwError = GetLastError() ; <BR> <BR>&nbsp;&nbsp;&nbsp;&nbsp;// Deal with that failure. <BR>&nbsp;&nbsp;&nbsp;&nbsp;. <BR>&nbsp;&nbsp;&nbsp;&nbsp;. <BR>&nbsp;&nbsp;&nbsp;&nbsp;. <BR> <BR>&nbsp;&nbsp;&nbsp;&nbsp;} // End of error handler <BR> <BR> <BR>// <BR>// Case Two: calling the function with <BR>//&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; lpFileSizeHigh != NULL <BR> <BR>// Try to obtain hFile's huge size. <BR>dwSizeLow = GetFileSize (hFile, &amp; dwSizeHigh) ; <BR> <BR>// If we failed ... <BR>if (dwSizeLow == INVALID_FILE_SIZE <BR>&nbsp;&nbsp;&nbsp;&nbsp;&amp;&amp; <BR>&nbsp;&nbsp;&nbsp;&nbsp;(dwError = GetLastError()) != NO_ERROR )<BR>{ <BR>&nbsp;&nbsp;&nbsp;&nbsp;// Deal with that failure. <BR>&nbsp;&nbsp;&nbsp;&nbsp;. <BR>&nbsp;&nbsp;&nbsp;&nbsp;. <BR>&nbsp;&nbsp;&nbsp;&nbsp;. <BR> <BR>&nbsp;&nbsp;&nbsp;&nbsp;} // End of error handler.<BR>For another example, see Examining Data Within a Mapped View.<BR><BR>Requirements<BR>Client: Included in Windows XP, Windows 2000 Professional, Windows NT Workstation, Windows Me, Windows 98, and Windows 95.<BR>Server: Included in Windows Server 2003, Windows 2000 Server, and Windows NT Server.<BR>Header: Declared in Winbase.h; include Windows.h.<BR>Library: Use Kernel32.lib.<BR><BR><BR>See Also<BR>File Management Functions, GetCompressedFileSize, GetFileSizeEx, GetFileType<BR><BR><BR><BR><BR>就这个了.你的MSDN的版本有点旧了. 兄弟,我的是(April 2003)版本的<BR><BR>
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回复者：蓝蜻蜓 回复日期：2003-05-13 20:21:13
<br>内容：谢谢楼上的兄弟了，很详细
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