How To Get Column Id From Cgridview

From CGridView: Render customized/complex datacolumns

http://www.yiiframework.com/wiki/278/cgridview-render-customized-complex-datacolumns/#add-comment

this article why has only $row params where is $col params??

** i need to get column id or column name pass to function too, use for calculate or lookup data.

The solutions was solve on ref link.

thanks all.