set_accel_group() sets the global accelerator group for a GtkMenu. A GtkAccelGroup set in this way should also be designated as toplevel. This is achieved by calling add_accel_group() from the corresponding toplevel GtkWindow.

Note that there is a bug in the win32 version of GTK+ currently used in PHP-GTK. The accelerator key appears as it should, but does not connect to its designated signal where the accel group has been newly created and set in this way. Also, much of the accelerator locking mechanism has been replaced in GTK2. Future-friendly code can be created by using GtkItemFactory to create your menus; however, the same limitations in functionality currently apply.