Set Button event handler with SetEventHandler

        

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
    <mx:states>
        <mx:State name="enabled">
            <mx:SetProperty target="{textinput}" name="enabled" value="{true}" />
            <mx:SetEventHandler target="{button}" name="click" handler="currentState=''" />
            <mx:SetProperty target="{button}" name="label" value="Disable" />
        </mx:State>
    </mx:states>
    <mx:HBox id="hbox">
        <mx:Button id="button" label="Enable" click="currentState='enabled'" />
        <mx:TextInput id="textinput" enabled="false" text="example text" />
    </mx:HBox>
</mx:Application>

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Set Button event handler with SetEventHandler : Button Event « Components « Flex

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