+ } else if (property == VideoContentProperty::USE) {
+ set<bool> check;
+ BOOST_FOREACH (shared_ptr<const Content> i, vc) {
+ check.insert (i->video->use());
+ }
+
+ if (check.size() == 1) {
+ checked_set (_use, vc.front()->video->use());
+ } else {
+ checked_set (_use, false);
+ }
+
+ setup_sensitivity ();