能够很容易控制的一个Tree类。通过该类可以创建自己需要的风格化的树，有利于在特定环境下使用。-can be easily controlled by a Tree class. Through such needs can create your own style of the tree, to the specific environment.

能够很容易控制的一个Tree类。通过该类可以创建自己需要的风格化的树，有利于在特定环境下使用。-can be easily controlled by a Tree class. Through such needs can create your own style of the tree, to the specific environment.