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-rw-r--r--gtk2_ardour/ardour_button.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/gtk2_ardour/ardour_button.h b/gtk2_ardour/ardour_button.h
index 78c2f5e369..1128dce97a 100644
--- a/gtk2_ardour/ardour_button.h
+++ b/gtk2_ardour/ardour_button.h
@@ -124,6 +124,7 @@ class ArdourButton : public CairoWidget , public Gtkmm2ext::Activatable
void on_realize ();
bool on_enter_notify_event (GdkEventCrossing*);
bool on_leave_notify_event (GdkEventCrossing*);
+ bool on_grab_broken_event(GdkEventGrabBroken*);
bool on_focus_in_event (GdkEventFocus*);
bool on_focus_out_event (GdkEventFocus*);
bool on_key_release_event (GdkEventKey *);