As advised, I am posting this as a new thread.

I have a TIB_Query / TIB_Datasource linked to a TIB_Grid.

Some of the columns in the TIB_Grid need to be constrained to data held
in other tables.

Using a TDBGrid control I can assign selected columns as lookup columns
linked to fields in other tables. Can you advise how to duplicate this
in a TIB_Grid please.

The C++ lookup example doesn't do what I need.

Sorry to be a pain.

Many thanks

George