NSDraggingInfo protocol declares methods that supply information about a dragging session.
- macOS 10.10+
NSDraggingInfo protocol methods are designed to be invoked from within a class’s implementation of
NSDraggingDestination protocol methods. AppKit automatically passes an object that conforms to the
NSDraggingInfo protocol as the argument to each of the methods defined by
NSDraggingInfo messages should be sent to this object; you never need to create a class that implements the