CH Splitter can be used to split a Form, UserControl or MDIForm into two regions, whose size can be adjusted by the user with the help of the mouse. The first region is formed by the control itself, which acts as a container for one or more controls (e.g. TreeView). The second region is filled out by any desired control (e.g. ListView). The special feature is that the Split control itself can be subdivided into different sections (similar to Outlook Express). You can then assign any control to each of these sections. This flexibility allows you to create any possible subdivision of your user interface.