Object Hierarchy

    GObject
        GInitiallyUnowned
            GtkObject
                GtkWidget
                    GtkContainer
                        GtkBin
                            GtkWindow
                                GtkDialog
                                    GnomeAbout
                                    GnomeScores
                                GnomeApp
                                GnomeDialog
                                    GnomeMessageBox
                                    GnomePropertyBox
                            GtkButton
                                GnomeColorPicker
                                GnomeFontPicker
                                GnomeHRef
                            GnomeDruidPage
                                GnomeDruidPageEdge
                                GnomeDruidPageStandard
                        GtkBox
                            GtkHBox
                                GnomeAppBar
                                GnomeDateEdit
                                GtkCombo
                                    GnomeEntry
                            GtkVBox
                                GnomeFileEntry
                                    GnomePixmapEntry
                                GnomeIconEntry
                                GnomeIconSelection
                        GnomeDruid
                        GtkLayout
                            GnomeCanvas
                                GnomeIconList
                    GtkMisc
                        GtkImage
                            GnomePixmap
                GnomeClient
                GnomeCanvasItem
                    GnomeIconTextItem
                GnomeMDIChild
                    GnomeMDIGenericChild
                GnomeMDI