You can certainly add classes to a class in the visual class designer. I'm not exactly sure what you're asking here, but have a look at MemberData in the VFP Help file.
>Hey guys,
>
>I have a class that uses ADDOBJECT to, well, add objects in the INIT() of the parent. I would like to have IntelliSense ability with the added objects. Is there a way to append objects to an object at design-time?