Esteemed monks,

I'm trying to have a Perl/Tk application create menus on the fly, depending on current state. This works... mostly. When I exit the application, I get an error message along the following lines: 

18e6748 is not a hash at C:/Perl/site/lib/Tk.pm line 340. 
This application has requested the Runtime to terminate it in an unusu
+al way. 
Please contact the application's support team for more information.

[download]
I've been able to reproduce this with a minimalist example: 
#!/usr/bin/perl

use Tk;

my $mw = MainWindow->new;
my $txt = $mw->Text()->pack(-side => 'top');

my $number = 1;
my $letter = 'a';
my $popup_menu = "";

my $new_menu = $mw->Menu();
$new_menu->add('command', 
           -label => "Click me to show the pop-up menu.", 
           -command => sub { 
           $popup_menu = $mw->Menu();
           $popup_menu->add('command',
                    -label => "Number: $number",
                    -command => sub {
                    print STDERR "Number: $number\n";
                    $number++;
                    }
                    );
           $popup_menu->add('command',
                    -label => "Letter: $letter",
                    -command => sub {
                    print STDERR "Letter: $letter\n";
                    $letter++;
                    }
                    );
           $popup_menu->Popup(qw/-popover cursor/);
           }
           );

$txt->menu( $new_menu );

MainLoop;

[download]
Doing a SuperSearch for keywords "application requested Runtime terminate unusual" didn't turn up anything.

I'm sure I am not understanding some fundamental Tk concept here... can anyone point me in the right direction?

-- -David

In reply to Dynamic menus in Perl/Tk giving error by bibliophile

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