Converts a region into a rectangular region with the specified coordinates
#include <WinAPIGdi.au3>
_WinAPI_SetRectRgn ( $hRgn, $tRECT )
| $hRgn | Handle to the region. |
| $tRECT | $tagRECT structure that contains the coordinates of the rectangular region in logical units. |
| Success: | True |
| Failure: | False |
Search SetRectRgn in MSDN Library.