#enum GtkExpanderStyle
#Used to specify the style of the expanders drawn by a GtkTreeView.
#@https://developer.gnome.org/gtk3/3.2/gtk3-Standard-Enumerations.html#GtkExpanderStyle
extern class GtkExpanderStyle `{GtkExpanderStyle`}
	#The style used for a collapsed subtree.
	new collapsed `{ return GTK_EXPANDER_COLLAPSED; `}

	#Intermediate style used during animation.
	new semi_collapsed `{ return GTK_EXPANDER_SEMI_COLLAPSED; `}

	#Intermediate style used during animation.
	new semi_expanded `{ return GTK_EXPANDER_SEMI_EXPANDED; `}

	#The style used for an expanded subtree.
	new expanded `{ return GTK_EXPANDER_EXPANDED; `}
end