#enum GtkOrientation
#Represents the orientation of widgets.
#@https://developer.gnome.org/gtk3/3.2/gtk3-Standard-Enumerations.html#GtkOrientation
extern class GtkOrientation `{GtkOrientation`}
	#The widget is in horizontal orientation.
	new horizontal `{ return GTK_ORIENTATION_HORIZONTAL; `}

	#The widget is in vertical orientation.
	new vertical `{ return GTK_ORIENTATION_VERTICAL; `}
end