>VFP 6.0
>
>How do you make a input text box only accept upper case characters?

If you simply want to force alpha characters to upper case, you can use "!A" in the Format property; this will not prevent the user from entering numerals, will force all alpha characters to upper case, and will block spaces, comma and gthe like. If you want to restrict to only alpha characters, you'll have to trap the KeyPress or InteractiveChange event and check the inpout string.