GObject
        GnomeScanBackend
        GTypeModule
            GnomeScanModule
        GnomeScanModuleManager
        GnomeScanNode
            GnomeScanScanner
            GnomeScanSink
        GnomeScanJob
        GInitiallyUnowned
            GtkObject
                GtkWidget
                    GtkContainer
                        GtkBin
                            GtkWindow
                                GnomeScanDialog