make a single cell uneditable

This question has been answered for 1.x

With the 2.x version, is there an easy way to dynamically make a single cell uneditable (suppose the rest of the grid is editable).

Try this

obj.onCellEditStarting = function(text, column, row) {

// if you want to make cell (0,0) uneditable
if ((column==0) && (row==0)) {
return 1;
}
}