Class Poco::BasicEvent
Author: Applied Informatics Software Engineering GmbH and Contributors
Date: 2009-11-24

# Poco

# template < class TArgs >

# class BasicEvent

Library: Foundation
Package: Events
Header: Poco/BasicEvent.h

## Description

A BasicEvent uses internally a DefaultStrategy which invokes delegates in an arbitrary manner. Note that one object can only register one method to a BasicEvent. Subsequent registrations will overwrite the existing delegate. For example:

    BasicEvent<int> event;
    MyClass myObject;
    event += delegate(&myObject, &MyClass::myMethod1);
    event += delegate(&myObject, &MyClass::myMethod2);

The second registration will overwrite the first one. The reason is simply that function pointers can only be compared by equality but not by lower than.

## Inheritance

Direct Base Classes: AbstractEvent < TArgs, DefaultStrategy < TArgs, AbstractDelegate < TArgs >, p_less < AbstractDelegate < TArgs > > >, AbstractDelegate < TArgs > >

All Base Classes: AbstractEvent < TArgs, DefaultStrategy < TArgs, AbstractDelegate < TArgs >, p_less < AbstractDelegate < TArgs > > >, AbstractDelegate < TArgs > >

## Constructors

### BasicEvent

BasicEvent();

## Destructor

### ~BasicEvent

~BasicEvent();