title: Right Alt key also triggers Windows Message for Left Control key
body: <p>In a win32 message handler I'd like to be able to handle Left and Right Alt and Control keys. Left and Right is distinguished with bit 24 of lParam, but when I press the Right Alt then I also get a message for Left Control key (Right Alt is therefore "alt gr"). Is there a way to switch off this behavior or somehow distinguish the message for the Left Control key that was triggered by the Right Alt key?</p>