> I mean I need "list-like" controls (grid, list box,
> combo box) that performs filtering itself
> while underlying dataset is not filtered.

> Which method/event I need to override in
> order to get such functionality?

There is nothing built into IBO to support this, indeed a great many
features specifically rely on properties/definitions based on the
dataset itself.

While I have never investigated, I suspect that it would be very
difficult to achieve using IB_Grid (and therefore lookupcombo) due to
the very tight interactions with the dataset.

Have you looked at using the dataset Filter properties? Presumably
you want control based filtering in order to have both filtered and
unfiltered views visible at the same time. I think you will need two
separate datasets in order to achieve this under IBO (but you could
tie the two datasets together with events if that was required).

--
Geoff Worboys
Telesis Computing