How to show list of items when the user pressed tab key in an empty field

Hi all
i would like to know if there is a way to open a form with items list which will be shown to the user when he pressed the tab key within a field for instance "item code" field will present a search form with a table filled with item codes and their description.
i'm currently working in 2004 version. i know how to catch the event.
i'm creating a form with a matrix object binded to a datasource which is connected to the data base table which contains all the items.
what would like to know if there is a better way to this. maybe using buisness partner objects. and if so how
appriciate the help
Yoav

You Should use Formatted Search in this case.
You must create and associate a query for your field.
click on the field you want items to be listed and press Shift + F2
catch the keydown event of this field and check pval.charpressed = 9 (tab key press)
then execute
SBO_Application.SendKeys("+")

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