#endif
extern void mlt_events_init( mlt_properties self );
-extern int mlt_events_register( mlt_properties self, char *id, mlt_transmitter transmitter );
+extern int mlt_events_register( mlt_properties self, const char *id, mlt_transmitter transmitter );
extern void mlt_events_fire( mlt_properties self, const char *id, ... );
extern mlt_event mlt_events_listen( mlt_properties self, void *service, const char *id, mlt_listener listener );
extern void mlt_events_block( mlt_properties self, void *service );