> However, I can't see what sort order and character sets have
> to do with the problem described, which is TIB_LookupCombo
> feeding an altered string to the Keysource.

I am not certain that this is the problem in the instance described
but I have had very similar problems with my own lookup control. When
the difference appears to only due to particular characters this is
now the first place that I look.

It has to do with the search processing within the lookup dataset. As
it attempts to compare the control text with the values returned by
the lookup query it decides whether it needs to go backwards or
forwards through the records according the text comparisons performed.
It can end up heading in the wrong direction due to character set
ordering differences between windows and interbase.


HTH

Geoff Worboys
Telesis Computing