Type Alias CenterBoxProps<StartWidget, CenterWidget, EndWidget, Attr, Self>

CenterBoxProps: BaseProps<
    Self,
    Gtk.Box.ConstructorProps & {
        center_widget?: CenterWidget;
        children?: [StartWidget?, CenterWidget?, EndWidget?];
        end_widget?: EndWidget;
        start_widget?: StartWidget;
        vertical?: boolean;
    },
    Attr,
>

Props for the CenterBox layout widget with start, center, and end slots.