interface Gtk.Orientable : GObject.Object
GtkOrientable interface is implemented by all widgets that can be
oriented horizontally or vertically. Historically, such widgets have been
realized as subclasses of a common base class (e.g
GtkOrientable is more flexible in that
it allows the orientation to be changed at runtime, allowing the widgets
GtkOrientable was introduced in GTK+ 2.16.
In order to implement Orientable, your type must inherit from
The orientation of the orientable.
Available since: 2.16