Increases or decreases the width and height of the specified rectangle
#include <WinAPIGdi.au3>
_WinAPI_InflateRect ( ByRef $tRECT, $iDX, $iDY )
| $tRECT | $tagRECT structure that increases or decreases in size. |
| $iDX | The amount to increase or decrease (negative value) the rectangle width. |
| $iDY | The amount to increase or decrease (negative value) the rectangle height. |
| Success: | True |
| Failure: | False |
Search InflateRect in MSDN Library.