diff --git a/Disp/DemoDrawing.cs b/Disp/DemoDrawing.cs
index 3c08be8..43d90dd 100644
--- a/Disp/DemoDrawing.cs
+++ b/Disp/DemoDrawing.cs
@@ -183,7 +183,7 @@ namespace Sample.Disp
 				tris.Add(new Tri3d(new Vec3d(i, 0, 0), new Vec3d(i + 1, 0, 0), new Vec3d(i + 0.5, 0, 1)));
 
 			Drawing faceDraw = tris.GetFaceDrawing();
-			Drawing linesDraw = tris.GetLineDrawing();
+			Drawing linesDraw = tris.ToLineDrawing();
 
             DemoUtil.RunApplication("DrawTri3d",
 				new DispList(new RgbTreat(0, 0, 1), linesDraw
diff --git a/Disp/DemoPick1.cs b/Disp/DemoPick1.cs
index 4139143..2dbc80d 100644
--- a/Disp/DemoPick1.cs
+++ b/Disp/DemoPick1.cs
@@ -1,4 +1,4 @@
-using Hi.Geom;
+using Hi.Geom;
 using Hi.Disp;
 using Hi.Native;
 
@@ -31,12 +31,12 @@ namespace Sample.Disp
 			dst.Expand(new Vec3d(1, 1, 1));
 		}
         /// <inheritdoc/>
-        public override void OnMouseEnter(ui_event_type e, panel_state_t state)
+        public override void OnMouseEnter(ui_event_type e, DispEngine dispEngine)
 		{
 			isMouseOver = true;
 		}
         /// <inheritdoc/>
-        public override void OnMouseLeave(ui_event_type e, panel_state_t state)
+        public override void OnMouseLeave(ui_event_type e, DispEngine dispEngine)
 		{
 			isMouseOver = false;
 		}