Yii app controller events

classes.php

<?php

class Controller extends CController
{
	public function beforeAction($action)
	{
		// register handler for the event
		$this->attachEventHandler('onUserRegister', array(Yii::app()->myComponent, 'sendEMail'));
		
		return parent::beforeAction($action);
	}
	
	// define event
	public function onUserRegister($event)
	{
		$this->raiseEvent('onUserRegister',$event);
	}

}

class UserController extends Controller
{
	public function actionRegister()
	{
		// register user here
		// raise event afterwards
		$this->onUserRegister(new CEvent());
	}

}