tk 0.1.10

def_widget_opts! {
    TtkComboboxOpt: (
        // standard
        TkClass,
        TkCursor,
        TkStyle,
        TkTakeFocus,
        TkXScrollCommand,

        // widget-specific
        TkExportSelection,
        TkInvalidCommand,
        TkJustify,
        TkHeight,
        TkPostCommand,
        TkShow,
        TkState,
        TkTextVariable,
        TkValidate,
        TkValidateCommand,
        TkValues,
        TkWidth,
    ),
}