An Události handler is a public Metody of a Třída that is called each time an Události is raised by an objekt having an observer of the same Třída.

The name of the event handler is the "event name" of the objekt, followed by an underscore, and the name of the event.

The event name of an object is usually the name you define in the development environment, but can be anything you want. This name is attributed at object creation by the NEW instruction.