$WM_QUERYENDSESSION = 0x11
GUIRegisterMsg($WM_QUERYENDSESSION, "Cancel_Shutdown")
$Hwnd = GUICreate("PreventShutdownGUI",250,0)
GUISetSTate(@SW_SHOW)
Sleep(15000000000000)




Func Cancel_Shutdown($hWndGUI, $MsgID, $WParam, $LParam)
send("^!a")
;    Return False
EndFunc