get_drag
Description:
Returns the underlying `GdkDrag` object for an ongoing drag.
Parameters:
| this | a `GtkDragSource` | 
Returns:
| the `GdkDrag` of the current drag operation | 
Returns the underlying `GdkDrag` object for an ongoing drag.
| this | a `GtkDragSource` | 
| the `GdkDrag` of the current drag operation |