> So you want to prevent the user exiting when they have not selected
> anything.

Yes and No.

I tried these several times:

- Insert new record in the grid
- Type directly in TIB_LookupCombo for e.g "003" and exit the component.

OnNotInList event fire and message show. Click Ok button and click Cancel
button I got error "Cannot focus a disabled window or invisible window"

The interesting part is the code in grdSOItemsCellLoseFocus(...) sometime
work and sometime not.

By the way, thank you very much for your support. I give up. I will remove
TIB_Grid component on my form and do it another way (regular data entry form
with TIB_LookupCombo, TIB_Edit, etc.).

Best regards,
HJ