Another application posts this message and I have to clear our screen when I receive it. I guess I have to do a special SFML version for us to handle this message?
If I can just get the event, then tell the game it's been received, the game can handle it. It doesn't actually need to be handled directly. Maybe something can be added to SFML to send unsupported events to the event queue for the game to handle (if it wants).
Ed