Using different creation policies

           
<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" creationComplete="initButton();">
    <mx:Script>
        
            public function initButton():void {
                newButton.label="creationPolicyAll Button";
            }
          
    </mx:Script>
    <mx:states>
        <mx:State name="creationPolicyAll">
            <mx:AddChild relativeTo="{myPanel}" creationPolicy="all">
                <mx:Button id="newButton" />
            </mx:AddChild>
        </mx:State>
        <mx:State name="creationPolicyNone">
            <mx:AddChild id="nocreationPolicy" relativeTo="{myPanel}" creationPolicy="none">
                <mx:Button label="creationPolicyNone button" />
            </mx:AddChild>
        </mx:State>
    </mx:states>
    <mx:Panel id="myPanel" title="Static and dynamic states" width="300" height="150">
        <mx:Button label="Change to creationPolicyAll state" click="currentState = currentState == 'creationPolicyAll' ? '' : 'creationPolicyAll';" />
        <mx:Button label="Explicitly create a button control" click="nocreationPolicy.createInstance();" />
        <mx:Button label="Change to nocreationPolicy state" click="currentState = currentState == 'creationPolicyNone' ? '' : 'creationPolicyNone';" />
    </mx:Panel>
</mx:Application>

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Using different creation policies : State « Effects « Flex

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