Hi, just to be complete, here are a few Gtk2 version scripts for connecting to the map_event. 
#!/usr/bin/perl
use warnings;
use strict;
use Gtk2 -init;

my $window = Gtk2::Window->new;
$window->add( Gtk2::Label->new("Yaada yadda yadda") );

print "BEFORE mapped ?-> ",$window->mapped,"\n";

$window->show_all;

$window->signal_connect( delete_event => sub { exit });

#$window->hide_all;
print "AFTER mapped ?-> ",$window->mapped,"\n";

Gtk2->main;

[download]

And to connect to the signal 

#!/usr/bin/perl
use warnings;
use strict;
use Glib qw/TRUE FALSE/;
use Gtk2 '-init';

my $window = Gtk2::Window->new('toplevel');
$window->set_title('Z');
$window ->signal_connect( 'destroy' => \&delete_event );
$window->set_border_width(10);
$window->set_size_request(300,200);

my $vbox = Gtk2::VBox->new( FALSE, 6 );
$window->add($vbox);
$vbox->set_border_width(2);

my $hbox= Gtk2::HBox->new( FALSE, 6 );
$vbox->pack_end($hbox,FALSE,FALSE,0);
$hbox->set_border_width(2);

my $button = Gtk2::Button->new_from_stock('gtk-quit');
$hbox->pack_end( $button, FALSE, FALSE, 0 );
$button->signal_connect( clicked => \&delete_event );

$window->set_position('center');

##############################################
# put your screen code in the following callback
$window->signal_connect(map_event => sub { print "mapped\n"} );
###############################################

$window->show_all();

Gtk2->main;
#####################################
sub delete_event {
Gtk2->main_quit;
return FALSE;
}

[download]
I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku ................... flash japh

In reply to Re: Can't call method "get_screen" on an undefined value by zentara
in thread Can't call method "get_screen" on an undefined value by hakim-djz

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