How to use messages component

Yii 1.1 General Discussion
1

I tried to write this code but nothing happens. I expected an error of Yii. I expected a mistake because I did not create that class.


    'components' => array(

        'messages' => array(

            'onBeginRequest' => array (

                'MyClassOnBeginRequest' => 'methodOnBeginRequest'

            )

        ),
2

onBeginRequest is rised from CApplication - http://www.yiiframework.com/doc/api/1.1/CApplication#onBeginRequest-detail

CMessageSource (‘messages’) is a child of CApplicationComponent so it does not rise this event

3

I see. CMessageSource rise only onMissingTranslation event. =( I am only at page 13 of Application Development Cookbook =). I am just trying.