FAQ #2452, published on 2002-10-15
In an auto-fed combo box, how do I tell the difference between an entered and a selected value?
Two tests exist to see if the value has been entered and not selected from the drop down list.

1. If the value has been entered then ListSelect( <name_combo> ) return -1.
2. The property ...Value returns an empty value whereas the entered value is available in ..DisplayedValue.