Hiding Class from Class Explorer in BCB4

Is there a way to keep a base class  from showing up in the class explorer ?

 I have a component derived from a base component derived from TComponent.

 The IDE inserts the #include "Cbase" and #include "Cderived" directives and
the two classes show in the class tree along side the TForm1 class. I don't
see the inheritance hierarchy for the TForm although #include <Forms.hpp> is
present. How can I achieve the same ?