make combobox in grid not editable?

I used the example in the forum to put a combobox in a gid column using the template (not control) technique, and it worked. But I can't make it not editable, via setCellEditable( false ) or setCellEditable( false, 1).

It looks like the template isn't hooked in to this property. I also wonder if underlying data gets changed with this method.

Also, I really need a dropdown that's not changeable by typing like the combobox is. Anyone know how to do this?

Can any template be placed inside a cell, and html as well?

Thanks for any help.