GtkLockButton / GPermission

[Roland Koebler <rk-list simple-is-better org>]

Hi,

is there any example for GtkLockButton (and/or GPermission)?
I'm trying to use it, but all I get are segfaults (in Python):

1. Adding a GtkLockButton and clicking on it segfaults:

$ python
> > > from gi.repository import Gtk
> > > w = Gtk.Window()
> > > b = Gtk.LockButton()
> > > w.add(b)
> > > w.show_all()
> > > Gtk.main()
(click)
Segmentation fault

2. Trying to use GSimplePermission segfaults:

$ python
> > > from gi.repository import Gio
> > > p = Gio.SimplePermission.new(True)
> > > p.acquire(None)
Segmentation fault

3. Using a GPermission-subclass works, but using it with the
GtkLockButton segfaults again:

$ python
> > > from gi.repository import Gio, Gtk
> > >
> > > class dummy_permission(Gio.Permission):
> > >     def __init__(self):
> > >         Gio.Permission.__init__(self)
> > >         self.impl_update(False, True, True)
> > >     def acquire(self, cancellable=None):
> > >         self.impl_update(True, True, True)
> > >     def release(self, cancellable=None):
> > >         self.impl_update(False, True, True)
> > >
> > > p = dummy_permission()
> > > p.get_allowed()
False
> > > p.acquire()
> > > p.get_allowed()
True
> > > p.release()
> > > p.get_allowed()
False
> > > w = Gtk.Window()
> > > b = Gtk.LockButton()
> > > b.set_permission(p)
> > > w.add(b)
> > > w.show_all()
> > > Gtk.main()
(click)
Segmentation fault


Any ideas?

Roland