Release 10.1A: OpenEdge Development:
ADM Reference

queryPosition

Procedure that captures state events for the associated query in the object’s data source.

Location: datavis.p

Parameters:

INPUT pcState AS CHARACTER

Possible values are: FirstRecord (first record); NotFirstOrLast (not the first or last record); LastRecord (last record); NoRecordAvailable (no record); OnlyRecord (only one record).

Notes:

When any state begins with NoRecordAvail, it means to disable; all others (FirstRecord, NotFirstOrLast, LastRecord, OnlyRecord) mean to enable if in Save mode (SaveSource property is set to yes).
Sets the RecordState property to NoRecordAvailable when the state is equivalent to that; but for any other state, sets the value to RecordAvilable.