> is it possible to insert a temporary field to TIB_Grid, I
> mean a field that physicaly don't exist i any table?

Two possibilities I can think of...

1. Add a Calculated field to the dataset (see CalculatedFields in the
online help).

2. Add a border column to grid. For example, I do this to mark which
rows are selected, rather than relying on the row select color. I
setup so that clicking on the border cell toggles the selected state.

Of course it depends on whether you want to be able to edit the
contents of that field. I seem to remember someone talking about
editable calculated fields recently, but I dont know if anything was
done about that.

HTH

Geoff Worboys
Telesis Computing