SetEndOfFile

The SetEndOfFile function moves the end-of-file (EOF) position for the specified file to the current position of the file pointer.

BOOL SetEndOfFile(

HANDLE hFile	// handle of file whose EOF is to be set
);

Parameters

hFile

Identifies the file to have its EOF position moved. The file handle must have been created with GENERIC_WRITE access to the file.

Return Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

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.

See Also

CloseHandle, CreateFile, CreateFileMapping, UnmapViewOfFile

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