I think you have 2 problems. 1 is that you have the MainLoop statement in the wrong place, and 2, you call exit, instead of destroying the MainLoop.

This works: 

#!/usr/bin/perl
use warnings;
use strict;
use Tk;
use Tk::MiniCalendar;
 
my $date_sel = dates();
print $date_sel; 

# MainLoop; # bad placement
 
sub dates{
   
 my $out_date;   
 my $top = MainWindow->new;

 my $frm1 = $top->Frame->pack;  # Frame to place MiniCalendar in
 my $minical = $frm1->MiniCalendar->pack;

 my $frm2 = $top->Frame->pack;  # Frame for Ok Button
   
 my $b_ok = $frm2->Button(-text => "Ok",
                -command => sub {
                  my ($year, $month, $day) = $minical->date;
                  $out_date = "$day-$month-$year";                   

#                  exit;
                   $top->destroy;
                
                },
            )->pack; 

MainLoop;
            
return $out_date; 

}

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Old Perl Programmer Haiku ................... flash japh

In reply to Re: Callbacks using TK::Minicalendar by zentara
in thread Callbacks using TK::Minicalendar by reaper9187

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