I played with this stuff last time a long time ago but still remember how hard to start. Copy code from http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fox7help/html/lng_putstrlp_rp.asp and use it as a starting point. It's from VFP7 help.

>Very frustrating.
>
>Now; such a simple fll (prints out var type passed) is returning garbage.
>
>I think I need to take a break...
>the output is:
>VAL[]
>Var: [
>
>so I must have screwed somethign up with mixing/matching libraries or header files or something...
>
>#include "pro_ext.h"
>
>void FAR test(ParamBlk FAR *parm ) {
> char test[100];
> _PutStr("VAL[");
> _PutValue(&parm->p[0].val);
> _PutStr("]\n");
> sprintf(test,"Var: [%c]\n",parm->p[0].val.ev_type);
> _PutStr(test);
>}
>
>FoxInfo myFoxInfo[] = {
> { "test", (FPFI) test, 1, "C"}
>};
>
>FoxTable _FoxTable = {
> (FoxTable FAR *) 0,
> sizeof( myFoxInfo) / sizeof( FoxInfo ),
> myFoxInfo
>};