enableEditEvents in a grid cell

 grdAccessories.enableEditEvents(false, false, false);

The above code, I can control the whole grid is edit mode.

But I want to ask I want a one grid cell can be edit mode ?

In this case you need to use onEditCell event.
For example:

grid.attachEvent("onEditCell", function(stage,rId,cInd,nValue,oValue){ if(rId==row_id && cInd==coolumn_ind){ return true } else return false });