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OnExpose in ActiveX


I ran into a problem which I hope someone can give me a hint:

I use the IDLDrawWidget with Visual Basic.
In the IDL-procedure I create a surface with SurfaceShade and PolyShade,
and display this in the IDLDrawWidget.

Because I want to manipulate the image I played around with the 
RegisterForEvents to set who is handling the mouse-events
(VB or IDL).

If you set "forward expose events" the image is no longer
displayed?? But the button-processing is perfect.
I guess the expose-event does not reach the IDL and the image
is not actually displayed. I looked for an expose-function to
trgger from VB like the ...->draw.... in object graphics but could 
not find it.

Does someone know how this can be done?


E.P.B. Bierman 
TNO Human Factors 
P.O. Box 23 
3769 ZG Soesterberg 
The Netherlands 
Tel: + 31 3463 56 304 
fax: + 31 3463 53 977 
email: bierman@tm.tno.nl