On Screen Keyboard

[betancourtb82]

I was wondering if there was any examples of how to implement an "on-screen keyboard". The experiment deals with a subject trying to unscramble words. The idea is to put a keyboard on the screen and have them click the letters in order to spell out the word. I was thinking of implementing 26 buttons, individually, but I wasn't sure if that was the best way to go about making this keyboard. Any other methods?

Thanks