Asks the #GtkTreeDragSource whether a particular row can be used as the source of a DND operation. If the source doesn’t implement this interface, the row is assumed draggable.
row on which user is initiating a drag
Return: %TRUE if the row can be dragged
See Implementation
Asks the #GtkTreeDragSource whether a particular row can be used as the source of a DND operation. If the source doesn’t implement this interface, the row is assumed draggable.