"carry on processing" is not an event. Start the program in the background, make its finish an event.
لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re^3: Perl/Tk window contents disappear when obscured then revealed by choroba
in thread Perl/Tk window contents disappear when obscured then revealed by Another Ed

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