This object provides a simple user control to allow single and multiple selection of values. I used this control in PBDelta v5 to provide the filters and folder selection within the File Explorer.

Band对象有三类：Desk，Info和Comm以及Tools Bands。其中Desk Bands 用于任务栏；Info和Comm--又称浏览栏（Explorer Bar）--用于IE和资源管理器。-Band object has three categories: Desk, Info and Comm and Tools Bands. Desk Bands for which the task bar Info and Comm- also known as the navigation

TreeView控件用来显示信息的分级视图，如同Windows里的资源管理器的目录。TreeView控件中的各项信息都有一个与之相关的Node对象。TreeView显示Node对象的分层目录结构，每个Node对象均由一个Label对象和其相关的位图组成。在建立TreeView控件后，我们可以展开和折叠、显示或隐藏其中的节点。TreeView控件一般用来显示文件和目录结构、文档中的类层次、索引中的层次和其他具有分层目录结构的信息。 -TreeView control is used to di