>*snip*
>>Unfortunately, you couldn't use MessageBoxIndirect() directly from within VFP because the structure requies one member to be the address of a callback function.
>
>As long as it passes the correct information, you should be able to use the default winproc which you can get using GetWindowLong. Just plug the address into the structure.

Ah, yes! Hadn't thought of that. Nice catch, Larry. The only problem then would be to properly initialize the HELPINFO structure.