Is there a way to make individual cells in the grid read only? Is
there a way to make entire rows readonly? I have the need to prevent
the user from editing certain cells and/or certain rows in the grid
based on the underlying data. Tried using the Contacts example of
how color and fonts can be customized on an individual basis but
can't seem to make individual cells readonly.

Here is what I need> Assume row has a descrition field with data
of "reserved", I want to change the color of the entire row and also
not allow user to modify that row. Assume description field has data
of "system", I want to have certain columns (for that row) to be
unmodifiable.

Thanks.