I want to start a listbox as a subroutine and return the choice to the main program which is otherwise a command line program (don't laugh please).

How do I return the picked value to the main program.

The code below shows the value in the command line window when clicked on but does not display the output of:

 
  print "From top level: selection is $choice\n";

[download]

in the command line window when the listbox is closed.

#!/usr/bin/perl
use strict;
use Tk;

my @listbox_items = qw/frodo bilbo rabbits orcs smaug gandolf/;
my $choice = &myListBox(@listbox_items);
print "From top level: selection is $choice\n";

sub myListBox{
my @listbox_items = @_;
my $mw = new MainWindow;
    $mw->geometry('400x300');
    my $lb = $mw->Listbox(-selectmode => "single")->pack( );
       $lb->insert('end', @listbox_items);
       $lb->bind('<Button-1>'); 
       $mw->Button(
                     -text    => "Close Window",
                     -command => sub { $mw->withdraw();
                                        return $choice;})->pack;
       ##double click on item from listbox
         $lb -> bind('<Double-1>'=> sub {
                    $choice = $_[0]->get($_[0]->curselection),
                     print "in loop selection is $choice\n";
                    },
          );
MainLoop;
}

[download]

In reply to perl tk listbox how to return choice to main program by bdalzell

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