I approached the last application under section wii applications submitted to the Scenery Beta 2009. A simple, at the same time useful application that can test the operation of the buttons in our Wiimotes, Nunchucks and Classic controls, yes in graphical mode using the SDL libraries.
Author: eglomer
The only thing missing perhaps take on this homebrew is that we can also check the buttons of our commanders Game Cube, perhaps the author is encouraged to include in a future release.
http://wii.scenebeta.com/noticia/botoning