Try

Code:
ShowCursor(False)
but make sure you put a

Code:
ShowCursor(True)
when the program closes. But they must be used in equal measures.

e.g if you use ShowCursor(False) 5 times (Not sure why you would do this but still), you must use ShowCursor(True) 5 times also.

EDIT Just checked whether the ShowCursor(True) thing must be used in equal amounts as False, but it seems they don't despite the documentation saying that this must happen. In fact, from what I can work out, you don't need to use ShowCursor(True) at all. It cursor reappears when the app is closed. Weird, anyone shed some light on this?