Try this :

create the (say) ib_LookupCombo and then in your code you (already) have a
suitable event handler to handle whatever event you wish - say the CloseUp.
Simply do this :

MyIbLookupCombo->OnCloseUp =
MyPrivateHandlerWhichAlreadyHasBeenCoded;

Delphi will be something similar, the above is C++ Builder.

HTH.

Norman.

----------------------------------------------------------------------------
----
Norman Dunbar EMail: NDunbar@...
Database/Unix administrator Phone: 0113 289 6265
Lynx Financial Systems Ltd. Fax: 0113 201 7265
URL: http://www.LynxFinancialSystems.com
----------------------------------------------------------------------------
----