CTreeCtrl控件的一个经典的遍历程序,占用内存小,运算速度快.控件的经典使用.-CTreeCtrl control of a classic ergodic process, small memory, Operational speed. Control of the classic use.

主要是树视图控件和ctreectrl类的要点-Mainly TreeView controls and category ctreectrl points

主要功能就是给树控件添加图片和逐层展开的功能，还有就是删除，添加，修改树节点功能-Main function is to add controls to the tree and then deploy the image features, there is a delete, add, modify the tree node function