>Hi George,
>
>>The reason I suggested a STRING is that a normal (not Unicode) one character string contains 8 bits which is the size of a BYTE. However, VFP may include a null terminator on the string (CHR(0)) which may be causing the problems you're seeing.
>
>But a string is always passed as a pointer? How should an additional byte at the memory address cause a GPF?
>
>Christof

It shouldn't. That was my point. The DLL is going to going to move one byte. However, you or VFP evaluate it on return, is another matter.