Release 10.1A: OpenEdge Development:
ADM Reference

enterLookup

This procedure fires a trigger on entry of lookup field.

Location: lookup.p

Parameters: None

Notes: This trigger stores the current screen value of the displayed field in the Lookup. When the displayed and key fields are not the same, and the displayed field is changed in the leave trigger, code can be run to check whether the value entered actually exists as a unique record. If it does, the Lookup need not be used.