tk 0.1.10

def_widget_opts! {
    TkScrollbarOpt: (
        // standard
        TkActiveBackground,
        TkBackground,
        TkBg,
        TkBorderWidth,
        TkBd,
        TkCursor,
        TkHighlightBackground,
        TkHighlightColor,
        TkHighlightThickness,
        TkJump,
        TkOrient,
        TkRelief,
        TkRepeatDelay,
        TkRepeatInterval,
        TkTakeFocus,
        TkTroughColor,

        // widget-specific
        TkActiveRelief,
        TkCommand,
        TkElementBorderWidth,
        TkWidth,
    ),
}