I have a listbox setup like so...
    #Create the tape removal dialog box
    my $remove_dialog = $win->DialogBox(-title=>'Choose a tape',
                                        -buttons=>["Remove", "Cancel"]
+);
    
    #Create the listbox to hold the tape numbers
    my $remove_list = $remove_dialog->Listbox(-width=>'25', 
                                              -height=>'5', 
                                              -font=>$font)->pack;
    #Get the tapes that are stored
    my @stored_tapes = getTapes();
    
    #Put each tape in the listbox
    foreach my $tape (@stored_tapes)
    {$remove_list->insert('end',$tape);}
        
    #Show the $remove_dialog box to the user
    my $remove_result = $remove_dialog->Show;


    if($remove_result eq "Remove")
    {
        my $test = $remove_list->get('active');
        print $test;
    }

[download]
This works fine. The problem is ... when I click Remove with nothing selected in the box
$remove_list->get('active')
defaults to the first value in the list. I would like to be able to check for the case of the user not selecting an option.

Does anyone know how this is possible?

Thanks for any help, Gry

In reply to Tk Listbox problem by Grygonos

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