说明：  树形控件的使用例子，树控制和视（Tree Control&View]主要用来显示具有一定层次结构的数据项，如资源管理器中的磁盘目录等，以供用户在其中进行各种选择。
(Tree Controls the use of examples, depending on the tree control and [Tree Control & View] is mainly used to show a certain hierarchy of data items, such as Explorer, such as the disk directory for the user in which the various options.)