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Problems with IVideoWindow::put_Owner

Problems with IVideoWindow::put_Owner

Problems with IVideoWindow::put_Owner

(OP)
Hi there. I am new with Tek-Tips. I have a problem with an application we are developping. There is a video preview  dialog box that I can open with a click of a button. It activates a dialog box that streams from web cam. It works on the first time I have it open. When I close it, and then try to reopen the dialog box with the video preview, an error appears. I've narrowed down the error to the IvideoWindow::put_Owner method. Problem is I am sure that I have returned the owner ship via IvideoWindow::put_Owner(NULL) as instructed. Anyone have any ideas on what could cause this problem?

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