How to get IHTMLDocument2 from a HWND

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SUMMARY
This article shows how to get the IHTMLDocument2 interface from a HWND. If Microsoft Active Accessibility (MSAA) is installed, you can send the WM_HTML_GETOBJECT message to the document’s window (with the window class “Internet Explorer_Server”) and then pass the result from SendMessage to an MSAA function, ObjectFromLresult, to get a fully marshaled IHTMLDocument2 pointer.

Here is VB version
Here is C version

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