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Diffstat (limited to 'libs/surfaces/control_protocol/control_protocol/control_protocol.h')
-rw-r--r--libs/surfaces/control_protocol/control_protocol/control_protocol.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libs/surfaces/control_protocol/control_protocol/control_protocol.h b/libs/surfaces/control_protocol/control_protocol/control_protocol.h
index 89e9e6c4d5..5401c98599 100644
--- a/libs/surfaces/control_protocol/control_protocol/control_protocol.h
+++ b/libs/surfaces/control_protocol/control_protocol/control_protocol.h
@@ -54,6 +54,8 @@ class ControlProtocol : virtual public sigc::trackable, public PBD::Stateful, pu
virtual void route_list_changed () {}
+ virtual void midi_connectivity_established () {}
+
PBD::Signal0<void> ActiveChanged;
/* signals that a control protocol can emit and other (presumably graphical)