Object Hierarchy

    GObject
        GInitiallyUnowned
            GtkObject
                GtkWidget
                    GtkContainer
                        GtkBin
                            GtkComboBox
                                ColorComboBox
                                ElementComboBox
                                ShadeComboBox
                                StippleComboBox
                            GtkWindow
                                GtkDialog
                                    DumpDialog
                                    OrientationChooser
                                VisuUiMain
                            GtkAlignment
                                ToolPanel
                        GtkBox
                            GtkVBox
                                LineObject
                                VisuRenderingWindow
                            GtkHBox
                                ValueIO
                    GtkDrawingArea
                        CurveFrame
                    GtkEntry
                        NumericalEntry
                    OpenGLWidget
        Plane
        VisuInteractive
        VisuObject
        VisuData
        VisuDataNode
        VisuElement
        VisuGlExtScale
        VisuMarks
        VisuRendering
            VisuRenderingAtomic
            VisuRenderingSpin