## 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