Continuing my Gtk2 posting series, I am trying to popup a message dialog window but the script keeps freezing and goes into a loop. I have wrote this simple script that has the same logic ( or lack of) as the large script. can anyone point out my error? 
#!/usr/bin/perl -w
use strict;
use warnings;
use Glib qw/TRUE FALSE/;
use Gtk2 '-init';
use threads;
use threads::shared;

my $magic: shared = 0;
my $die: shared = 0;
my $test = threads->new( \&test);

my $window = Gtk2::Window->new( 'toplevel');
$window->set_border_width(20);
$window->signal_connect('delete_event' => sub { $die = 1; $test->join;
+ Gtk2->main_quit; });
my $vbox = Gtk2::VBox->new( FALSE, 2);
my $button = Gtk2::Button->new( "start");
$vbox->pack_start($button,FALSE,FALSE,4);
$button->signal_connect( 'clicked' => sub { $magic = 1});
my $button1 = Gtk2::Button->new( "go");
$vbox->pack_start($button1,FALSE,FALSE,4);
$button->signal_connect( 'clicked' => sub { $magic = 2});
$window->add( $vbox);
$window->show_all;
my $timer2 = Glib::Timeout->add(100, \&dialog);
Gtk2->main;

sub dialog {
    if ( $magic == 2) {
    #    my $messagedialog_verification = Gtk2::MessageDialog->new( un
+def, 'destroy-with-parent', 'question', 'yes-no', "Verify waypoints?"
+);
    #    my $response = $messagedialog_verification->run;
    #    $messagedialog_verification->destroy;
        $magic = 1;
    }
}

sub test {
    while (1) {
        if ( $die == 1) {goto END};
        if ($magic == 1) {
            for (;;) {
                if ( $magic == 2) {
                    for (;;) {
                        if ( $magic == 1) { last};
                    }
                }
                print "happy\n";
                if ( $die == 1) {goto END};
                if ( $magic == 0) { last};
            }
        }
    }
    END:
}

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In reply to Gtk2: Message dialog by deadpickle

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