/// <summary>
/// 隐藏CheckBox
/// 说明
/// 在CustomDrawNodeCheckBox事件中使用
/// eg:
/// TreeList _curTree = (TreeList)sender;
/// _curTree.HideCheckBox(n => n.GetNodeType() == NodeType.Area || n.GetNodeType() == NodeType.CabsGroupRoot, e);
/// </summary>
/// <param name="tree">TreeList</param>
/// <param name="conditionHanlder">委托</param>
/// <param name="e">CustomDrawNodeCheckBoxEventArgs</param>
public static void HideCheckBox(this TreeListNode tree, Predicate<TreeListNode> conditionHanlder, CustomDrawNodeCheckBoxEventArgs e)
{
  if (conditionHanlder(e.Node))
  {
 e.Handled = true;
  }
}

void LHTree_CustomDrawNodeCheckBox(object sender, CustomDrawNodeCheckBoxEventArgs e)
{
  TreeList _curTree = (TreeList)sender;
  _curTree.HideCheckBox(n => n.GetNodeType() == NodeType.Area || n.GetNodeType() == NodeType.CabsGroupRoot, e);
}