get_uline_accel_group() returns the GtkAccelGroup used by GTK during the time that the GtkMenu is popped up. It is used internally to allow the user to modify the key accelerators where they have not been locked.

Note that this method does not work as it should in the win32 version of GTK+ currently used by PHP-GTK. Also, this method has been eliminated from later versions of GTK+, and much of the accelerator lock mechanism replaced. Future-friendly code can be created by using GtkItemFactory to create your menus; however, the same limitations in functionality currently apply.