I'm trying to upgrade some old code from Gtk2 to Gtk3.

Most dependencies still work, but Gnome2::Canvas and Gnome2::Wnck are a complete loss. I can replace Gnome2::Canvas with GooCanvas2 easily enough, but what can be done about replacing WNCK?

#!/usr/bin/perl
package testgtk3;

use strict;
use diagnostics;
use warnings;

use Gtk3 '-init';
#use Gnome2::Canvas;
use Gnome2::Wnck;

my $window = Gtk3::Window->new('toplevel');
$window->signal_connect('delete_event' => sub { Gtk3->main_quit; });
$window->set_border_width(5);
$window->set_title('Gtk3 test');

my $button = Gtk3::Button->new("Hello world!");
$button->signal_connect(clicked => sub {
    my ($button) = @_;
    print "Hello world!";
    $window->destroy();
});

$window->add($button);
$button->show();
$window->show();

Gtk3->main();

1;

[download]

Any such script with use Gnome2::Wnck produces a million error messages, starting with:

Subroutine Pango::Color::parse redefined at
    /usr/lib/x86_64-linux-gnu/perl/5.26/DynaLoader.pm line 204 (#1)
    (W redefine) You redefined a subroutine.  To suppress this warning
+, say
    
        {
            no warnings 'redefine';
            eval "sub name { ... }";
        }
    
Subroutine Pango::Color::to_string redefined at
    /usr/lib/x86_64-linux-gnu/perl/5.26/DynaLoader.pm line 204 (#1)
Subroutine Pango::Attribute::end_index redefined at
    /usr/lib/x86_64-linux-gnu/perl/5.26/DynaLoader.pm line 204 (#1)
Subroutine Pango::Attribute::start_index redefined at
    /usr/lib/x86_64-linux-gnu/perl/5.26/DynaLoader.pm line 204 (#1)

[download]

In reply to Upgrade Gtk2 to Gtk3, and Gnome2::Wnck breaks by Anonymous Monk

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