static void _internal_declare_ ## m (); \
private: \
static Listener _get_ ## m ## _listener (void *, SCM); \
-DECLARE_LISTENER (_listen_scm_ ## m);
+void _listen_scm_ ## m (SCM);
#define DECLARE_ACKNOWLEDGER(x) public : void acknowledge_ ## x (Grob_info); protected:
#define DECLARE_END_ACKNOWLEDGER(x) public : void acknowledge_end_ ## x (Grob_info); protected: