Is it possible to allow a popup in a text widget only if a condition is met, i.e. if a text has been selected? This is the code I have so far, which creates a popup, however, it checks if something has been selected only agter its creation.

use strict;
use warnings;
use Tk;
use Tk::Text;
my $mw = tkinit();
my $text = $mw->Text()->pack();
$text->insert('end',"This is my first line\n");
$text->insert('end',"This is my second line\n");

PupupTextWidget($mw, $text);
$mw->MainLoop();

sub PupupTextWidget{
  my ($mw, $obj) = @_;
  my $messagePopupSave;
  if ($^O eq 'MSWin32'){
    $messagePopupSave="Do something (ctrl+s)";
  }else{
    $messagePopupSave="Do something (cmd+s)";
  }
  my $menu = $mw->Menu(-tearoff=>0, -menuitems=>[
    [command=>$messagePopupSave, -command=>[sub {
        my $UserInput=$obj->getSelected;
        print $UserInput;
        }, $obj,]],
    [qw/command Copy/, -command=>['clipboardCopy', $obj,]],
    ]);

    $obj->menu($menu);

    return $obj;
}

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In reply to Tk pop-up if condition is met by IB2017

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