gtk:drag-source-content (object)

object -- a gtk:drag-source object
content -- a gdk:content-provider object for the drag source, or nil

The accessor for the content slot gets or sets the data that is offered by drag operations from this drag source, in the form of a gdk:content-provider object. When the data is requested in the cause of a DND operation, it will be obtained from the content provider.

This function can be called before a drag is started, or in a handler for the "prepare" signal. You may consider setting the content provider back to nil in a "drag-end" signal handler.