Reference to the Design instance for this item |
Member of Tree Item (PRIM_TREE.TreeItem)
Data Type - PRIM_CTRL - Base class for all visual controls
Reference to the design instance associated with the list item.
A design is a reusable part that implements the Prim_Tree.iTreeDesign interface so that the Tree can interact with it.
An instance is created for every item add to the list.