CompuServe Messages

I like Khalid's idea, it's a good one, but here's a slight modification to it which may end up being easier. Suppose your input handler only looks for a single specific event which is normally not used (such as maybe a double click of the right button?), and when it occurs, removes it and signals another task. The second task saves the pointer of the currently active window, and then brings up a window full of your letter selection gadgets. Your user selects what he wishes, and every time he does, you re-activate the original window and introduce the character into the input stream. Your user continues in this fashion until he no longer wishes to see the letter-selection window, and perhaps clicks a "resume" gadget on it, and you return him to his original window. I uploaded some generic stuff about input handlers a while back, and for some reason it got stuck in the Modula DL, but you may find it useful.