I build a mydatagrid.ocx active x control, and use it in the forms of main
project .exe. There is no project group setup here.

I want to be able to debug into the mydatagrid.ocx, but unsuccessful.
According to the Microsoft document, I set up the startup program in
ActiveX control project. It loaded the exe correctly, but when I try to
open forms, nothing happen for one form, and "Runtime error 399, component
mydatagrid.ocx or one of its component not correctly registered"

Has anybody done this before?

Thanks in advance.