Determines whether a file name is in long format
#include <WinAPIShPath.au3>
_WinAPI_PathIsLFNFileSpec ( $sFilePath )
| $sFilePath | The file name to be tested. |
| True: | the file exceeds the number of characters allowed by the 8.3 format. |
| False: | the file is in 8.3 format. |
Search PathIsLFNFileSpec in MSDN Library.