An ActiveX like Web Browser Control has it's own window (hWnd). You may try to play with it.

>I have a form that contains a web browser control that I use to display a PDF document. I have been playing around with transparency and have had success in getting the whole form to show at different levels of transparency. Is it possible to have the web browser control transparent while leaving the rest of the form solid? I am trying to compare two pdfs for changes by overlaying one form over another.
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