Flex Application Initialization event order
this is the order of events fired by a flex application (or any UIComponent) while loading:
preinitialize Fired before any initialization - no sub components are defined. You can reference variables of the component but not children. initialize Once all the subcomponents have been created this is fired - nothing has been rendered at this point. creationComplete Component has been created and is in the display list applicationComplete All components are initialised and displayed. 事实上，Flex中一个组件的initialize过程包括它的子组件的preinitialize和initialize两个过程。flex的一个组件创建过程包括它的子组件的创建过程。 Tips: 如果你要在子组件的initialize响应函数中使用Application的某个变量，你必须在application 的 Preinitialize响应函数中创建它或者直接在该变量定义时创建。 thanks： http://www.lynchconsulting.com.au/blog/index.cfm/2007/1/23/Flex-Application-Initialisation-event-order http://blog.csdn.net/songhuanren/archive/2007/05/24/1624546.aspx
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