Uwe Raabe

Thanks. I actually assumed that, but wanted to make sure.

Thanks, I appreciate your effort to find a solution.

Do you see any way to encapsulate the whole functionality inside a class helper for or descendant of TNxCheckBoxColumn6?

In my use case I have two columns with this requirement and I tried to separate the code into a new unit which I just have to use to get the requested behavior. The problem I have is that I don't know how I can iterate the cell values when I don't have access to the grid instance from inside the column class.

Strange. I was pretty confident I did. Never mind. Now I have attached the file to my previous post and I can even see it there.

No problem. Attached is a demo project with two of those columns.

Don't get me wrong - it is working (almost) as expected. I just would prefer a bit simpler implementation.