RE: button_press_event from image
- From: "Ratcliffe, Jeffrey (Peters)" <Jeffrey Ratcliffe External eads com>
- To: "'Emmanuele Bassi'" <ebassi gmail com>
- Cc: gtk-perl-list gnome org
- Subject: RE: button_press_event from image
- Date: Tue, 10 Oct 2006 10:18:28 +0200
Why does the Gtk2::Image not inherit the signals from Gtk2::Widget -
amongst them button_press_event?
no widget listens to all the events by default (the more they are, the
more traffic they cause on the X-GDK-GTK line): events must
specifically be added using Gtk2::Widget::add_events() or
Gtk2::Widget::set_events(). the only widget that enables all the
events by default is Gtk2::EventBox
you may subclass Gtk2::Image and use Gtk2::Widget::add_events() inside
your constructor, so that you can avoid the extra packing:
package My::ActiveImage
use Gtk2;
use Glib::Object::Subclass
'Gtk2::Image';
sub INIT_INSTANCE {
my ($self) = @_;
$self->add_events([ qw( button-press-mask button-release-mask ) ]);
}
1;
and then you can use My::ActiveImage and connect to the button-press-
event.
I learn something every day on this list. Thanks!
Jeff
[
Date Prev][
Date Next] [
Thread Prev][
Thread Next]
[
Thread Index]
[
Date Index]
[
Author Index]