This code will allow you to right-click an item in a treeview, and popup a menu at the bottom-left of the item. 这个代码允许你在树状视图中右击一个项目，并在项目的左下方弹出一个菜单。
This is my test project, using the setup program and the Limits of functions and tray menu, the program is very simple, very little code. 这是我的一个测试工程，利用了设置程序界限功能和托盘及右键菜单，程序很简洁，代码很少。
