Initial data commit

Task/Simple-windowed-application/Perl/simple-windowed-application-1.pl

@@ -0,0 +1,10 @@
+use Tk;
+
+$main = MainWindow->new;
+$l = $main->Label('-text' => 'There have been no clicks yet.')->pack;
+$count = 0;
+$main->Button(
+  -text => ' Click Me ',
+  -command => sub { $l->configure(-text => 'Number of clicks: '.(++$count).'.'); },
+)->pack;
+MainLoop();

Task/Simple-windowed-application/Perl/simple-windowed-application-2.pl

@@ -0,0 +1,27 @@
+use Gtk '-init';
+
+# Window.
+$window = Gtk::Window->new;
+$window->signal_connect('destroy' => sub { Gtk->main_quit; });
+
+# VBox.
+$vbox = Gtk::VBox->new(0, 0);
+$window->add($vbox);
+
+# Label.
+$label = Gtk::Label->new('There have been no clicks yet.');
+$vbox->add($label);
+
+# Button.
+$count = 0;
+$button = Gtk::Button->new(' Click Me ');
+$vbox->add($button);
+$button->signal_connect('clicked', sub {
+  $label->set_text(++$count);
+});
+
+# Show.
+$window->show_all;
+
+# Main loop.
+Gtk->main;