Calculator Screen Example?

[Rubin, Dan]

Hello,

Does anyone out there have or know of a simple calculator screen example
palm C application or code snipit?  Basically I would like to find out how
to implement a numeric screen that shows numerals from either on-screen
buttons or graffiti strokes in the number area just like the standard calc
app.

If anyone has seen this type of example in a book or somewhere on-line
please let me know.

thanks
- Dan