You can disable the whole column by setting its
Is that what you want, of do you want to make the adjacent
"cell" non=editable? That's much harder, and will require a
renderer for that column as well.
I suspect you will find that the event won't help you, and
that you need to use the dataProvider API to update the
dataProvider item. This will invoke redraw of the DG, where your
Col3 renderer will use the value in Col2 to determine its editable
This is beyond the capability of an "editable" DG, and will
need to be implemented as pure item renderers.