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Set the date of a file.
Source position: filutilh.inc line 132
| function FileSetDate( | 
| const FileName: UnicodeString; | 
| Age: LongInt | 
| ):LongInt; | 
| const FileName: RawByteString; | 
| Age: LongInt | 
| ):LongInt; | 
| Handle: THandle; | 
| Age: LongInt | 
| ):LongInt; | 
FileSetDate sets the file date of the open file with handle Handle or to Age, where Age is a DOS date-and-time stamp value.
Alternatively, the filename may be specified with the FileName argument. This variant of the call is mandatory on unices, since there is no OS support for setting a file timestamp based on a handle. (the handle may not be a real file at all).
The function returns zero if successfull.
On Unix, the handle variant always returns -1, since this is impossible to implement. On Windows and DOS, a negative error code is returned.