I think what you want to do is to "swallow" the other application's window, or something close to that. Many window managers, and the gnome-panel, for instance, do this to capture programs like xbiff & contain them within a smaller window.

I don't know how this is done, but I do know that your application first needs to find the window ID of the application to be swallowed, by traversing the list of top level windows in the X server and finding the one you're after (usually by checking the X window name, class, resource, etc).

It may be instructive to have a look at the "FvwmIdent" and "FvwmButtonBar" modules in fvwm, to see how this is done at an X toolkit level.

In reply to Re: Tk and processes as child/sub windows by mugwumpjism
in thread Tk and processes as child/sub windows by bbfu

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