Window.getGroup
gtk.window_group.WindowGroup getGroup() nothrowReturns the group for window or the default group, if window is null or if window does not have an explicit window group.
Returns
the #GtkWindowGroup for a window or the default group
gtk.window_group.WindowGroup getGroup() nothrowReturns the group for window or the default group, if window is null or if window does not have an explicit window group.