The RegisterKeyEvent function registers an application-supplied object to receive notification of operator keystroke events. The application must construct an object derived from the ECLKeyNotify abstract base class. When an operator keystroke occurs, the NotifyEvent() method of the application supplied object is called. The application can choose to have the keystroke filtered or passed on and processed in the usual way. See ECLKeyNotify Class for more details.

Implementation Restriction: Only one object may be registered to receive keystroke events at a time.