TTreeView = class(TCustomTreeView)
class PASCALIMPLEMENTATION TTreeView : public TCustomTreeView
TTreeView represents a window that displays a hierarchical list of items, such as the files and directories on a disk, for instance.
Use TTreeView to add an expanding and contracting outline to a FireMonkey form. Each node in a tree view control consists of a label and optionally a check box attached to each node. Each node can have a list of subnodes associated with it. By clicking a node that has subnodes you can expand or collapse the associated list of subnodes.