You might also be able to bind a handler for <Visibility> events and raise the window again if it becomes obscured, which avoids continuous graphics traffic (until two programs both try to do this and end up fighting over "on top" status).

Is this a long-lived window or only a short-lived dialog box? Is this supposed to be a modal dialog? If so, grabbing the server may be appropriate.

In reply to Re^3: Tk overrideredirect topwindow on top by jcb
in thread Tk overrideredirect topwindow on top by Anonymous Monk

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