The CheckBoxTreeFX component is an extension of the Adobe Flex 2 mx.controls.Tree class. The main purpose of this component is to abstract a CheckBox item renderer and fully implement a Check Box Tree.

Just stating that a Tree has an item renderer that is a check box does not fully meet the needs of what an actual check box tree does and is used for. Other than having a check box in the item renderer, the tree implements a reverse validation algorithm and includes many extra style properties.