Defining drag-and-drop event handlers
For the framework to handle the "drag-from" and "drop-on" events, if your drag-and-drop operation is not a standard event (such as StdFormNew), you must specify the event handlers to use during the operation.
For the framework to handle the "drag-from" and "drop-on" events, if your drag-and-drop operation is not a standard event (such as StdFormNew), you must specify the event handlers to use during the operation.