allow accel activation depending on sensitivity and the attach widget.

allow accel activation depending on sensitivity and the attach widget.

Thu Nov 27 16:19:03 2003  Tim Janik  <timj@gtk.org>

        * gtk/gtkmenu.c: allow accel activation depending on sensitivity
        and the attach widget.

        * gtk/gtkmenuitem.c: allow accel activation depending on visibility,
        sensitivity and the parent menu.

        * gtk/gtkwidget.[hc]: introduced ::can-activate-accel signal which
        checks whether accelerators may activate a widget. the default handler
        demands the widget be sensitive and visible+viewable.

        * gtk/gtkaccelgroup.[hc]: export gtk_accel_group_activate().