>VFP 8.0 docs: The Empty class is only available within a program (.prg) file and cannot be defined in a visual class library (.vcx) class library.

Which actually doesn't make sense and I reported as a doc bug during the beta. You can NEVER

DEFINE CLASS myempty AS empty

, you can only createobj() or Newobj() it. Of course, you can do this in both VCX and PRG code.

BOb