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    <p>In general, you want the class that dispatches the event to either extend <code>EventDispatcher</code> or implement <code>IEventDispatcher</code>. (All <code>DisplayObject</code>s do, so if your classes are <code>DisplayObject</code>s, you don't need to do anything extra.)</p> <p>In the dispatching class:</p> <pre><code>class DispatchingClass extends Event Dispatcher { function doSomething() { // do stuff dispatchEvent(new Event("FOO")); } } </code></pre> <p>In the listening class:</p> <pre><code>class ListeningClass { function startListening(dispatcher:DispatchingClass) { dispatcher.addEventListener("FOO", handleFoo); } function handleFoo(evt:Event) { // do stuff } } </code></pre> <p>EventDispatchers work fine with custom events.</p> <hr> <p>If for some reason your listening class doesn't have and can't get an instance of your dispatching class, you can make a global event broadcaster. Basically, make a universally-accessible class that extends <code>EventDispatcher</code> (or implements <code>IEventDispatcher</code>) and listens for and dispatches events to anything that tells it to.</p> <p>Here is a bare-bones implementation of an event broadcaster:</p> <pre><code>import flash.events.EventDispatcher; public class EventBroadcaster extends EventDispatcher { private static var _instance:EventBroadcaster = new EventBroadcaster(); public function EventBroadcaster() { if (_instance != null) { trace ("Error: an instance of EventBroadcaster() already exists."); } } public static function getInstance():EventBroadcaster { return EventBroadcaster._instance; } } </code></pre> <p>You use it pretty much the same way:</p> <pre><code>class DispatchingClass { function doSomething() { // do something EventBroadcaster.getInstance().dispatchEvent(new Event("FOO")); } } class ListeningClass { function startListening() { EventBroadcaster.getInstance().addEventListener("FOO", handleFoo); } function handleFoo(evt:Event) { // do stuff } } </code></pre> <p><code>dispatchEvent()</code> and <code>addEventListener()</code> are just the functions from the built-in <code>EventDispatcher</code>.</p> <p>There's some discussion at <a href="http://www.actionscript.org/forums/showthread.php3?t=112186" rel="nofollow noreferrer">Event Broadcaster - Simple events solution...</a> on ways to make an event broadcaster and how to add useful features. The article <a href="http://www.actionscript.org/resources/articles/610/1/Centralized-Event-Management-in-Actionscript-20/Page1.html" rel="nofollow noreferrer">Centralized Event Management in Actionscript 2.0</a> has a good introduction to the concept.</p>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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