diff options
Diffstat (limited to 'libs/evoral/src/ControlSet.cpp')
| -rw-r--r-- | libs/evoral/src/ControlSet.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libs/evoral/src/ControlSet.cpp b/libs/evoral/src/ControlSet.cpp index 1dd73c0115..6b793a08ea 100644 --- a/libs/evoral/src/ControlSet.cpp +++ b/libs/evoral/src/ControlSet.cpp @@ -54,8 +54,11 @@ void ControlSet::what_has_data (set<Parameter>& s) const { Glib::Mutex::Lock lm (_control_lock); + for (Controls::const_iterator li = _controls.begin(); li != _controls.end(); ++li) { - s.insert(li->first); + if (li->second->list() && !li->second->list()->empty()) { + s.insert (li->first); + } } } |