https://bugzilla.gnome.org/show_bug.cgi?id=649979
* gtk_tree_view_enable_model_drag_source:
* @tree_view: a #GtkTreeView
* @start_button_mask: Mask of allowed buttons to start drag
- * @targets: (array): the table of targets that the drag will support
+ * @targets: (array length=n_targets): the table of targets that the drag will support
* @n_targets: the number of items in @targets
* @actions: the bitmask of possible actions for a drag from this
* widget