gulong g_signal_connect( gobject     *object,
                         const gchar *name,
                         gcallback    func,
                         gpointer     func_data );

gulong g_signal_connect_after( gobject       *object,
                               const gchar   *name,
                               gcallback      func,
                               gpointer       func_data );

gulong g_signal_connect_swapped( gobject       *object,
                                 const gchar   *name,
                                 gcallback      func,
                                 gobject       *slot_object );

void g_signal_handler_disconnect( gobject *object,
                                  gulong   handler_id );

void g_signal_handlers_disconnect_by_func( gobject   *object,
                                           gcallback  func,
                                           gpointer   data );

void g_signal_handler_block( gobject *object,
                             gulong   handler_id);

void g_signal_handlers_block_by_func( gobject   *object,
                                      gcallback  func,
                                      gpointer   data );

void g_signal_handler_unblock( gobject *object,
                               gulong   handler_id );

void g_signal_handler_unblock_by_func( gobject   *object,
                                       gcallback  func,
                                       gpointer   data );

void g_signal_emit( gobject *object,
                    guint      signal_id,
                    ... );

void g_signal_emit_by_name( gobject     *object,
                            const gchar *name,
                            ... );

void g_signal_emitv( const gvalue *instance_and_params,
                     guint         signal_id,
                     gquark        detail,
                     gvalue       *return_value );

void g_signal_stop_emission( gobject *object,
                             guint    signal_id,
                             gquark   detail );

void g_signal_stop_emission_by_name( gobject   *object,
                                     const gchar *detailed_signal );