Thanks, but my problem is not in using the progressbar widget (I can do this successfully), but in making the callback which updates it execute asynchronously. My update function is more complicated than a simple for loop (as in your example) and takes a while to run (so I need the application to be responsive in the mean time).

In reply to Re^2: Perl Tk Asynchronous Progress Updates by Anonymous Monk
in thread Perl Tk Asynchronous Progress Updates by hermes1908

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