> Just a thought, but depending on the Operating System,
 > and Compiler being
 > used....  And perhaps the memory modal compiled to....
 > You might also have
 > problems with _msg_t being TOO BIG!  It's 128k+2 by my
 > calculations, which is
 > fine for 32-bit Windows, Linux, and DOS Extened, but
 > does away with 16-bit
 > Windows, Pure DOS, and even then maybe 32-bit
 > windows...

    Can't argue about that, but would it get that far? The undefined
identifier would stop compilation dead here. Let's see what Neil says. I
suspect he may be using GCC.

Best Wishes,
Bill.

---