Dragging and Dropping Tree Nodes

In IDL versions 6.3 and later, you can create applications that allow users to drag tree nodes within a single tree widget, between tree widgets, or from a tree widget to a draw widget. Depending on the circumstances, the dragged tree node is either copied to the new location (leaving the source node intact) or moved to the new location (removing the source node). IDL provides a variety of controls that allow you to define the exact behavior of the application when a user drags and drops tree nodes.

This section discusses the following topics: