I want to write a script that detects when the user moves a Gtk2 window across the desktop.

Specifically, I want to know when the user releases the mouse button, at the end of the drag operation, so that I can check the window's new position.

This C tutorial has the right idea, but I can't work out how to do the same thing in Perl:

http://zetcode.com/tutorials/gtktutorial/gtkevents/

The Gtk2 Perl tutorial covers drag-and-drop operations, but I don't want to drop the Gtk2 window into another widget:

http://gtk2-perl.sourceforge.net/doc/gtk2-perl-study-guide/c5651.html

How can I amend the script below?

#!/usr/bin/perl
package dragwin;

use strict;
use diagnostics;
use warnings;

use Gtk2 '-init';

# Want to detect when the user drags a window across the desktop
# Specifically, when the user releases their mouse button, meaning the
#    drag operation has finished

# Create the window
my $window = Gtk2::Window->new();

$window->set_title('Drag me!');
$window->set_position('center');
$window->set_default_size(300, 300);
$window->set_border_width(5);
   
$window->signal_connect (destroy => sub { Gtk2->main_quit; });

# We want to detect the end of a drag, but this doesn't work
$window->signal_connect('event' => sub {

    my ($widget, $event) = @_;

    print "Window event type: " . $event->type . "\n";     
});

# Open the window
$window->show_all();
Gtk2->main();

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In reply to Gtk2 window dragging by Anonymous Monk

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