In a diagram with nodes and links, User wants to do more link by drag from one node to another node. However, the other node is not in the diagram, then the user release the mouse. At this time, I will start a new popup screen to allow user to add a node to the diagram. The problem is I do not know the last mouse position when the user release the mouse. Please tell me how to get it.
I did create LinkingNewTool which is
IN the Stop method, I started the popup screen.