Where did you get this sample?

Tk::Error: window ".toplevel.frame1.hlist.menu" was deleted before its visibility changed ... You don't recieve the error if you only push the Exit button.

That is because no Menu object is created, and then destroyed before it could be displayed.

sub knock_on_door always creates a new menu in $popup_menu, and that variable always goes out of scope and is supposed to be destroyed, but Tk does you a favor and keeps it around because its knows you're not Coping with Scoping

Make sense?

If you make it a global and the only one, then you won't get that message

#~ my $pop_menu = $frame->Menu(  -menuitems =>
our $pop_menu ;
$pop_menu ||= $frame->Menu(  -menuitems =>

[download]

But that isn't good practice, see tips at Re^3: Perl Tk Multiple Notebook Editing and Save (life cycle of variables) and the links it links

In reply to Re: Why does widget->destroy give the error Tk::Error widget was deleted before its visibility changed? by Anonymous Monk
in thread Why does widget->destroy give the error Tk::Error widget was deleted before its visibility changed? by thomas.bystrom

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