winform_TreeView失去焦点时选中节点仍然突显

//自已绘制

tvLed.HideSelection = false;
this.tvLed.DrawMode = TreeViewDrawMode.OwnerDrawText;
this.tvLed.DrawNode += new DrawTreeNodeEventHandler(tvLed_DrawNode);

 private void tvLed_DrawNode(object sender, DrawTreeNodeEventArgs e)
        {
            e.DrawDefault = true; //我这里用默认颜色即可，只需要在TreeView失去焦点时选中节点仍然突显
            return;

            if ((e.State & TreeNodeStates.Selected) != 0)
            {
                //演示为绿底白字
                e.Graphics.FillRectangle(Brushes.DarkBlue, e.Node.Bounds);

                Font nodeFont = e.Node.NodeFont;
                if (nodeFont == null) nodeFont = ((TreeView)sender).Font;
                e.Graphics.DrawString(e.Node.Text, nodeFont, Brushes.White, Rectangle.Inflate(e.Bounds, 2, 0));
            }
            else
            {
                e.DrawDefault = true;
            }

            if ((e.State & TreeNodeStates.Focused) != 0)
            {
                using (Pen focusPen = new Pen(Color.Black))
                {
                    focusPen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;
                    Rectangle focusBounds = e.Node.Bounds;
                    focusBounds.Size = new Size(focusBounds.Width - 1,
                    focusBounds.Height - 1);
                    e.Graphics.DrawRectangle(focusPen, focusBounds);
                }
            }
        }