Reference for unit 'fpg_tree'

This unit defines a tree view control

`uses`
`System,`
`Classes,`
`SysUtils,`
`fpg_base,`		The base unit and starting point of fpGUI
`fpg_main,`		The main unit that ties everything together from CoreLib
`fpg_widget,`		The base class for all other GUI widgets
`fpg_imagelist,`
`fpg_scrollbar,`
`fpg_menu;`

Overview

This unit defines a tree view control. A tree view displays items in an indented outline. The control provides buttons that allow nodes to be expanded and collapsed. You can include icons with items' text labels and display different icons to indicate whether a node is expanded or collapsed.