Invoked periodically as the image is held within the destination area, allowing modification of the dragging operation or mouse-pointer position.
Original signature is '- (NSDragOperation)draggingUpdated:(id < NSDraggingInfo >)sender'
Available in Mac OS X v10.0 and later.
- sender (INSDraggingInfo)
- The object sending the message; use it to get details about the dragging operation.
- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)