Object Hierarchy

    GObject
        GtkObject
            GnomeCanvasItem
                GnomeCanvasShape
                    GnomeCanvasBpath
                    GnomeCanvasRE
                        GnomeCanvasEllipse
                        GnomeCanvasRect
                    GnomeCanvasPolygon
                GnomeCanvasGroup
                    GnomeCanvasClipgroup
                GnomeCanvasLine
                GnomeCanvasPixbuf
                GnomeCanvasRichText
                GnomeCanvasText
                GnomeCanvasWidget
            GtkWidget
                GtkContainer
                    GtkLayout
                        GnomeCanvas
            GtkAdjustment
        GdkDrawable
        GtkStyle
        GdkDragContext
        GdkScreen
        GdkPixbuf
    GInterface
        GTypePlugin
        AtkImplementorIface