PropertyHandle :: RegisterHandle - Register property handle

In order to receive server events caused by other applications one may register a property handle to be notified in such cases. Notifications are sent only, when the resource affected by an update or delete operation is currently used by this property handle, i.e. when the currently selected instance changes or the collection the property refers to.

Notifications are not sent on attribute level, but on instance and collection level. The property handle is registered for being notified when an event happens on the allocated resources (index or instance).

Notification events have to be handled in appropriate event handlers implemented in the property or instance context.