I am a little new to this control so forgive me if this is wrong.
Looking at the code, there is a getCellDim method.
getCellDim: function(obj) // get cell prop for editable event
{
var ht = parseInt($(obj).height());
var pht = parseInt($(obj).parent().height());
var wt = parseInt(obj.style.width);
var pwt = parseInt($(obj).parent().width());
var top = obj.offsetParent.offsetTop;
var left = obj.offsetParent.offsetLeft;
var pdl = parseInt($(obj).css('paddingLeft'));
var pdt = parseInt($(obj).css('paddingTop'));
return { ht: ht, wt: wt, top: top, left: left, pdl:
pdl, pdt: pdt, pht: pht, pwt: pwt };
Maybe you could grab a reference to a cell in a column, then call this
method to obtain all the details of that cell. This may not be perfect
as your after a column width which may include things like borders,
etc, etc but i guess this should give you a "close enough" value
possibly.