Added code to the keyboard test to draw the modifier keys.
Added a flag to AreaHandler.Key()/Mouse() to indicate that a repaint is needed after that event has been handled. (Having Repaint() as a method deadlocked for the same reason resizing deadlocked before.)
Added some of the ExtKeys to the keyboard layout test.
YES RESOLVED THE KEYBOARD INPUT PROBLEM WOO YEAH YAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAY