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I have two checkbuttons (namely 'Main' and 'Top')in my perl tk application. One checkbutton is on the main gui and other is on a toplevel (popup) gui.
How can I keep both of them in sync

Following is the code:

use Tk; my $mw = MainWindow->new ; my ($m,$t); $mw->geometry("100x100"); $mw->Checkbutton(-text => 'Main',-variable=>\$m)->pack(-side => 'left' +); $mw->Button(-text => 'popup', -command => sub {my $t = $mw->Toplevel() +;$t->geometry("50x50");$t->Checkbutton(-text => 'Top',-variable => \$ +t)->pack(-side => 'left')})->pack(); MainLoop;

How can I keep 'Main' and 'Top' in sync. That means when 'top' is selected , 'Main' also gets selected and similarly when 'Top' is deselected
that makes also 'Main' deselected.

In reply to How to keep two checkbuttons in sync by ghosh123

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