This function moves the end-of-file position for the specified file to the current position of the file pointer. A remote application interface (RAPI) version of this function exists, and it is called CeSetEndOfFile.

BOOL SetEndOfFile( 
HANDLE hFile);


  • hFile
    [in] Handle to the file to have its EOF position moved. The file handle must have been created with GENERIC_WRITE access to the file.

Return Values

Nonzero indicates success. Zero indicates failure. To get extended error information, call GetLastError.


This function can be used to truncate or extend a file. If the file is extended, the contents of the file between the old EOF position and the new position are not defined.

If you called CreateFileMapping to create a file-mapping object for hFile, you must first call UnmapViewOfFile to unmap all views and call CloseHandle to close the file-mapping object before you can call SetEndOfFile.


Runs on Versions Defined in Include Link to
Windows CE OS 1.0 and later Winbase.h   Coredll.lib, Fsmain.lib

Note   This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.

See Also

CloseHandle, CreateFile, CreateFileMapping, GetLastError, UnmapViewOfFile

 Last updated on Tuesday, July 13, 2004

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