点击树形控件，使其跳转至相应的界面，可以充当菜单功能(Click on the tree control to jump to the corresponding interface. It can act as a menu function.)

一个实用的VB TreeView控件，可以支持多行内容的显示，并且可以展开折叠（收起）的树状菜单控件源码(A practical VB TreeView control, which can support the display of multiple lines of content, and can expand and collapse (collapse) the tree-like menu control source code)