+/**
+ * registerGlobalEventListener:
+ * @listener: the #AccessibleEventListener to be registered against an event type.
+ * @callback: a character string indicating the type of events for which
+ * notification is requested. Format is
+ * EventClass:major_type:minor_type:detail
+ * where all subfields other than EventClass are optional.
+ * EventClasses include "Focus", "Window", "Mouse",
+ * and toolkit events (e.g. "Gtk", "AWT").
+ * Examples: "focus:", "Gtk:GtkWidget:button_press_event".
+ *
+ * NOTE: this string may be UTF-8, but should not contain byte value 56 (ascii ':'),
+ * except as a delimiter, since non-UTF-8 string delimiting
+ * functions are used internally. In general, listening to
+ * toolkit-specific events is not recommended.
+ *
+ * Add an in-process callback function to an existing AccessibleEventListener.
+ *
+ * Returns: #TRUE if successful, otherwise #FALSE.
+ *
+ **/