Don't know about ADD CLASS, but CREATE CLASS works just fine.
Anyway, I got things to work now using the keyboard trick. It
ain't pretty, but nothing else seems to work. Should probably
add this to Toledo wishlist. Thanks all who replied.

>ActiveX control subclasses are a PITA! You can't use this technique on them and you can't use Add Class on them either (most likely because VFP internally instantiates the object and issues its own SaveAsClass).