QTreeView is a class in Qt framework. It provides a default model/view implementation of a tree view.
A QTreeView
implements a tree representation of items from a model. This class is used to provide standard hierarchical lists that were previously provided by the QListView
class, but using the more flexible approach provided by Qt's model/view architecture.
The official Qt documentation can be found here for Qt 4.8 and here for Qt 5.