Controling contained control from Composite Control

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I have build an activeX control , lets call it CCricl Control.
Then i went to Visual C++, open a new project and built a composite
component.
I went to the Project menu , added the CCricl control to the toolbar
and put it on the Composite control.

The class of CCircl is defined in CCircl.h
with interface functions like SetTextHover()

Do someone know how can i change the attributes of the
contained CCircl component from the Composite control ("Contnaing Component&quot

For Example How can i call the SetTextHover function to change the text
when hovering on the component ?

Thanks, roni