An enum for determining where a dropped row goes.
Value | Symbolic name | Description |
| 0 | Gtk::TREE_VIEW_DROP_BEFORE | Drop before this row. |
| 1 | Gtk::TREE_VIEW_DROP_AFTER | Drop after this row. |
| 2 | Gtk::TREE_VIEW_DROP_INTO_OR_BEFORE | Drop as a child of this row (with fallback to before if into is not possible) |
| 3 | Gtk::TREE_VIEW_DROP_INTO_OR_AFTER | Drop as a child of this row (with fallback to after if into is not possible) |