Tree widgets display information in a hierarchical structure or tree. Branches and sub-branches of the tree can be expanded and collapsed (either programmatically or by the user) to display or hide the information they contain. See WIDGET_TREE for a complete description of the function used to create tree widgets.

This section discusses the following topics:

• Types of Tree Widgets
• Example: A Simple Tree
• Setting the Tree Selection State
• Making a Tree Entry Visible
• Replacing the Default Bitmaps
• Dragging and Dropping Tree Nodes
• Positioning Tree Nodes
• Using Tree Widget Checkboxes