+ PBD::ScopedConnection parameter_change_connection;
+ PBD::ScopedConnection engine_started_connection;
+
+ /* plugin actions */
+ void plugin_scan_refresh ();
+ void clear_vst_cache ();
+ void clear_vst_blacklist ();
+ void clear_au_cache ();
+ void clear_au_blacklist ();
+ void edit_lxvst_path ();
+ void edit_vst_path ();