Changes the target types that this widget offers for drag-and-drop. The widget must first be made into a drag source with gtk_drag_source_set(). Since 2.4
a GtkWidget that's a drag source
list of draggable targets, or NULL for none. [allow-none]
See Implementation
Changes the target types that this widget offers for drag-and-drop. The widget must first be made into a drag source with gtk_drag_source_set(). Since 2.4