[DevExpress]treeList1背景色设置与自定义图标

为了和系统界面一致改成透明色：

             treeList1.BackColor = Color.Transparent;
             treeList1.Appearance.Empty.BackColor = Color.Transparent;
             treeList1.Appearance.Row.BackColor = Color.Transparent;
         

自定义图标

   private void treeList1_CustomDrawNodeImages(object sender, CustomDrawNodeImagesEventArgs e)
         {
             //0 叶子 1  文件夹   2 打开文件夹
             if (e.Node.Nodes.Count > )
             {
                 if (e.Node.Expanded)
                 {
                     e.SelectImageIndex = ;
                     return;
                 }
                 e.SelectImageIndex = ;
             }
             else
             {
                 e.SelectImageIndex =;
             }
         }