This is a small app that I made. It is good for testing if all your buttons on the wii mote and or gamecube controller work.
Also there is a link to the source code so new developers can learn from it!
This app is based on button tracer by Danny. But instead of "logging" button presses it shows if the button is currently pressed in a list! Also the only thing this version still lacks is the classic controller support. It is planed to be released soon!