tk 0.1.10

def_widget_opts! {
    TkToplevelOpt: (
        // standard
        TkBorderWidth,
        TkBd,
        TkCursor,
        TkHighlightBackground,
        TkHighlightColor,
        TkHighlightThickness,
        TkPadX,
        TkPadY,
        TkRelief,
        TkTakeFocus,

        // widget-specific
        TkBackground,
        TkClass,
        TkColorMap,
        TkContainer,
        TkHeight,
        TkMenu,
        TkScreen,
        TkUse,
        TkVisual,
        TkWidth,
    ),
}