如何让DevExpress TreeList的每个结点高亮显示？

概述：如何让DevExpress TreeList的每个节点高亮显示？

如何让DXperience TreeList的每个节点高亮显示？

效果如下：

private void treeList1_CustomDrawNodeCell(object sender, DevExpress.XtraTreeList.CustomDrawNodeCellEventArgs e)
 
       {
 
            TreeList node = sender as TreeList;
 
            if(e.Node == node.FocusedNode)
 
            {
 
                e.Graphics.FillRectangle(SystemBrushes.Window, e.Bounds);
 
                Rectangler = new Rectangle(e.EditViewInfo.ContentRect.Left,
                                           e.EditViewInfo.ContentRect.Top,
                                            Convert.ToInt32(e.Graphics.MeasureString(e.CellText,treeList1.Font).Width + 1),
                                            Convert.ToInt32(e.Graphics.MeasureString(e.CellText,treeList1.Font).Height));
 
                e.Graphics.FillRectangle(SystemBrushes.Highlight, r);
 
               e.Graphics.DrawString(e.CellText, treeList1.Font, SystemBrushes.HighlightText, r);
 
                e.Handled = true;
            }
       }