#include <WindowsConstants.au3>
#include <WinAPI.au3>
$hDC = _WinAPI_GetWindowDC(0)
$tRect = DllStructCreate($tagRECT)
DllStructSetData($tRect, 1, 20)
DllStructSetData($tRect, 2, 20)
DllStructSetData($tRect, 3, 20)
DllStructSetData($tRect, 4, 20)
$hBrush = _WinAPI_CreateSolidBrush(0x00FF00)
_WinAPI_FrameRect($hDC, DllStructGetPtr($tRect), $hBrush)
_WinAPI_RedrawWindow( _WinAPI_GetDesktopWindow(), 0, 0, $RDW_INVALIDATE + $RDW_ALLCHILDREN)
_WinAPI_DeleteObject($hBrush)
_WinAPI_ReleaseDC(0, $hDC)