GObject
        GInitiallyUnowned
            GtkObject
                GnomeCanvasItem
                    GnomeCanvasGroup
                        GnomeCanvasClipgroup
                    GnomeCanvasText
                    GnomeCanvasRichText
                    GnomeCanvasShape
                        GnomeCanvasBpath
                        GnomeCanvasRE
                            GnomeCanvasEllipse
                            GnomeCanvasRect
                        GnomeCanvasPolygon
                    GnomeCanvasLine
                    GnomeCanvasPixbuf
                    GnomeCanvasWidget
                GtkWidget
                    GtkContainer
                        GtkLayout
                            GnomeCanvas