The FaceTree property retrieves FaceTree object, if the face's Type property is exFaceTree, else it returns nothing. The CreateTree creates a Tree control if it is called for the first time ( changes the face's Type property to exFaceTree), and retrieve the FaceTree object, for the next calls. The InitFaceTree / InitFaceContent event occurs once the face's Type property has been changed to exFaceTree, or calling the CreateTree method for the first time. You can use the InitFaceTree event to initialize all faces of Tree type. The Visible property specifies whether the face's content is visible or hidden. The Enabled property enables or disables the face.

A face that contains a Tree control may fire any of the following events ( CreateTree, Type on exFaceTree ): 

• InitFaceTree event ( InitFaceContent event )
• FaceTreeButtonClick event
• FaceTreeExpandItem event
• FaceTreeSelectionChanged event
• FaceTreeStateChanged event
• FaceTreeValueChanged event