public void addTrack(InterpTrack t) { InterpTracks.Add(t); t.listEntry.TranslateBy(0, InterpTracks.Count * (Timeline.TrackHeight + 1)); //t.listEntry.Pickable = false; t.listEntry.ChildrenPickable = false; if (collapsed) { t.Visible = false; } listEntry.AddChild(t.listEntry); }