>Okay, that is accepted. Is there a way to populate the text box the way I described using VFP calculator/

Yes - any result from the calculator is stored in the _CALCVALUE System Variable.

STORE 50 TO _calcvalue
ACTIVATE WINDOW calculator   && perform any calculation ....
? _calcvalue

The help is quite sparse on use of the calculator, and its been in the language since the DOS days.

This sounds like a project for VFPX - build a better looking calculator that has all the right hooks to be tied into a numeric textbox (Quicken-like).