You could also use the afterIdle method. This allows a callback function to be executed when Tk enters the idle loop. However, if a user grabs a scroll bar with the mouse and honks it up and down, it's unlikely that you'll get into the idle loop.

You could also combine this with after, which allows a callback function to be invoked 'n' milliseconds later. Just set 'n' to a low number, so your callback function gets executed often.

--Chris

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