Release 10.1A: OpenEdge Development:
ADM Reference

rowObjectState

Procedure that is published from COMMIT-TARGET to tell the panel when to enable/disable itself. The panel enables itself when there are uncommitted changes, and disables itself at other times.

Location: toolbar.p

Parameters:

INPUT pcState AS CHARACTER

Valid values: NoUpdates, RowUpdated.

Notes: This could be a property, but at present the solution is to just check the state of the Commit button.