how can let the datagrid's editor is readonly

[kissmoon]

how can let the datagrid's editor is readonly?
code:

$("#dg").datagrid({
        toolbar: '#tb',
        singleSelect: true,
        onClickRow: onClickRow,
        columns: [[
             {
                title: 'version',
                field: 'version',
                readonly:"readonly",
                width: 80,
                editor: {
                    type: 'textbox'
                }
             }
         ]]
})

but when run, the version editor can edit,not read only?

[stworthy]

Please set the 'readonly' property to true.

Code:

editor:{
    type:'textbox',
    options:{
        readonly:true
    }
}

[kissmoon]

got it.
thanks.