void ghb_check_dependency(signal_user_data_t *ud, GtkWidget *widget);
void ghb_do_scan(signal_user_data_t *ud, const gchar *filename, gboolean force);
void ghb_log(gchar *log, ...);
+gboolean ghb_check_update(signal_user_data_t *ud);
#endif // _CALLBACKS_H_