How to create an Activex control with OpenCV?

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Dear sir:

I want to develope a activex control for ASP/JSP which displays web cam preview via Opencv libraries.

I create a method/function of my activex.

In this function, I call cvNameWindow("mypreview") to create a preview and use cvShowImage to display web cam preview on "mypreview" window.

It works.

However, "mypreview" is a isolated window which is not embedded in activex control(so it didn't embedded in browser,too).

Does anyonw know how to make preview window "become" an activex control which can be embedded in browser?

Thanks a lot for your sharing!

It will help me a lot!