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Yep, this works on Linux:
#!/usr/bin/perl use warnings; use strict; use Tk; use Proc::Background; my $mw = MainWindow->new; my $msg = $mw->Label(-text => 'Press the button once ready.')->pack +; my $button = $mw->Button(-text => 'Start', -command => \&run, )->pack; MainLoop(); sub run { my $proc = Proc::Background->new('kate'); # an editor $mw->update while $proc->alive; $mw->Label(-text => 'Finished.')->pack; $button->destroy; }
لսႽ ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re^2: 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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