Clutter X11

[vividsnow <vividsnow gmail com>]

Hello

I want to make transparent background window, but
how to call this method: https://developer.gnome.org/clutter/1.10/clutter-X11-Specific-Support.html#clutter-x11-set-use-argb-visual ?

my $backend = Clutter->get_default_backend();
$backend->set_use_argb_visual(1);

Can't locate object method "set_use_argb_visual" via package "Glib::Object::_Unregistered::ClutterBackendX11"

best regards