Flex3：自定义项呈示器不侦听父级调度的事件

I have a List with a custom ItemRenderer. The ItemRenderer contains a Checkbox and a Label. The component with the List has a 'select all' checkbox. When the 'select all' checkbox is checked, it dispatches an event that each item should listen to in order to select its own checkbox. The eventlistener is added on creationComplete of each item, and the event is dispatched correctly when the 'select all' checkbox is selected, but the listener in the custom ItemRenderer does not listen.I have a List with a custom ItemRenderer. The I