NSDraggingSource
A set of methods that are implemented by the source object in a dragging session.
Declaration
protocol NSDraggingSource : NSObjectProtocolOverview
In macOS 10.7 and later NSDraggingSource is now a formal protocol and has an updated interface. The OS X v10.6 behavior has been retained, but will be dropped in a future version of the operating system. The methods that are to be deprecated are marked as such.