Used to indicate the direction in which a GtkArrow should point.
Value | Symbolic name | Description |
| 0 | Gtk::ARROW_UP | Represents an upward pointing arrow. |
| 1 | Gtk::ARROW_DOWN | Represents a downward pointing arrow |
| 2 | Gtk::ARROW_LEFT | Represents a left pointing arrow. |
| 3 | Gtk::ARROW_RIGHT | Represents a right pointing arrow. |