+GType gtk_cell_area_box_get_type (void) G_GNUC_CONST;
+
+GtkCellArea *gtk_cell_area_box_new (void);
+void gtk_cell_area_box_pack_start (GtkCellAreaBox *box,
+ GtkCellRenderer *renderer,
+ gboolean expand,
+ gboolean align,
+ gboolean fixed);
+void gtk_cell_area_box_pack_end (GtkCellAreaBox *box,
+ GtkCellRenderer *renderer,
+ gboolean expand,
+ gboolean align,
+ gboolean fixed);
+gint gtk_cell_area_box_get_spacing (GtkCellAreaBox *box);
+void gtk_cell_area_box_set_spacing (GtkCellAreaBox *box,
+ gint spacing);
+
+/* Private interaction with GtkCellAreaBoxContext */
+gboolean _gtk_cell_area_box_group_visible (GtkCellAreaBox *box,
+ gint group_idx);