I am looking for a way to popup a dialog when a user presses the 'x' button to close a mainwindow of a Tk app on Windows.
I want to intercept the OnDestroy call and popup a dialog with an option to cancel which will prevent the destroy call and allow the program to continue. Any ideas?

use Tk;

my $mw = MainWindow->new( -title=> "Cancel Test");
    example();
MainLoop;

sub example {
    $mw->OnDestroy(sub{
        $response = $mw->messageBox(-icon => 'question', -message => '
+Really Exit?', -title => 'Continue?', -type => 'OkCancel', -default =
+> 'Ok');
        print "Reply:$response\n";
        $mw->break if $response eq 'Cancel';})
}

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In reply to Cancel close of mainwindow in Tk on Windows by smaclach

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