+class PannerEditor;
+
+class PannerPersistentTooltip : public Gtkmm2ext::PersistentTooltip
+{
+public:
+ PannerPersistentTooltip (Gtk::Widget* w);
+
+ void target_start_drag ();
+ void target_stop_drag ();
+
+ bool dragging () const;
+
+private:
+ bool _dragging;
+};
+
+