The sample program samples\wx\BouncingBalls.hs does not respond to p, + or - key,
even after adding
WXCore.windowSetFocus p
or
WXCore.windowSetFocus f
OS: Windows XP
GHC version: 7.6.3
wxWidgets version: 2.9.3, 2.9.4 and 2.9.5
wxHaskell version: 0.90.1.0 (currently in Github repository)