signal.id can currently be activated.
This is done by emitting the gtkWidgetCanActivateAccel
signal on widget; if the signal isn't overridden by a
handler or in a derived widget, then the default check is
that the widget must be sensitive, and the widget and all
its ancestors mapped.gtkWidgetCanActivateAccel(object, signal.id)objectsignal.idwidgetTRUE if the accelerator can be activated.