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## TixHList - The Tix Hierarchical Listbox Widget

TixHList is the Tix Hierarchical Listbox Widget. You can use it to display any data that have a hierarchical structure. For example, the HList widget in figure 4-1 displays a Unix file system directory tree; the HList widget in figure 4-1 displays the corporate hierarchy of a hypothetical company. As shown in these two figures, the entries inside the TixHList widget are indented can be optionally connected by branch lines according to their positions in the hierarchy.

> (Figure 4-1) Examples of the TixHList Widget

- Creating a Hierarchical List
- Creating Entries in a HList Widget
- Controlling the Layout of the Entries
- Handling the Selection and User Event