-void vik_treeview_add_layer ( VikTreeview *vt, GtkTreeIter *parent_iter, GtkTreeIter *iter, const gchar *name, gpointer parent,
- gpointer item, gint data, gint icon_type ); /* icon type: type of layer or -1 -> no icon */
-void vik_treeview_insert_layer ( VikTreeview *vt, GtkTreeIter *parent_iter, GtkTreeIter *iter, const gchar *name, gpointer parent,
- gpointer item, gint data, gint icon_type, GtkTreeIter *sibling );
+void vik_treeview_add_layer ( VikTreeview *vt, GtkTreeIter *parent_iter, GtkTreeIter *iter, const gchar *name, gpointer parent, gboolean above,
+ gpointer item, gint data, VikLayerTypeEnum layer_type );
+void vik_treeview_insert_layer ( VikTreeview *vt, GtkTreeIter *parent_iter, GtkTreeIter *iter, const gchar *name, gpointer parent, gboolean above,
+ gpointer item, gint data, VikLayerTypeEnum layer_type, GtkTreeIter *sibling );