How can i make a cell both of type checkbox and read only??
You can’t mix types.
Of course it possible to create new excell type , which will combine logic from both excells, but there is more simple colution
Next code will make column with index == INDEX readonly, for any cell type
mygrid.attachEvent(“onEditCell”,function(s,id,ind){
if (ind==INDEX) return false;
return true;
})