Humm, correction on my previous post. Listening to an image component should be possible.
This: http://livedocs.adobe.com/flex/3/langref/mx/controls/Image.html#eventSummary confirms that mx.controls. Image components dispatch a creationComplete event. Livedocs http://livedocs.adobe.com/flex/3/langref/mx/core/UIComponent.html#event:creationComplete tell me that the the type of creationComplete is: mx.events.FlexEvent.CREATION_COMPLETE So you need to make sure the corresponding class are imported in your AS3 class. import mx.events.FlexEvent