+
+ group_master.reset ();
+ _group_master_number = -1;
+
+ /* this is slightly tricky: is_gain() will return whether or not
+ the group is supposed to be sharing gain adjustment, and now that
+ we've reset _group_master_number to -1, it will reflect the user's
+ intentions correctly. Since there was a master before, and now there
+ is not, we are going to reactivate gain sharing ... and then tell
+ the world about it.
+ */
+ if (is_gain()) {
+ _gain_group->set_active (true);
+ send_change (PropertyChange (Properties::group_gain));
+ }