<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx=" http://ns.adobe.com/mxml/2009 "
????xmlns:s="library://ns.adobe.com/flex/spark"
????xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" preloaderChromeColor="#C6EDC7"? backgroundColor="#D29999" >
?<fx:Declarations>
??<!-- 將非可視元素（例如服務、值對象）放在此處 -->
?</fx:Declarations>
?<mx:Text x="247" y="48" id="title" text="密碼輸入框"/>
?<s:TextInput x="320" y="47" id="passwd" displayAsPassword="true" borderVisible="true"/>
?<s:Button x="373" y="297" label="cancel" id="cancel" click="reset()"/>
?<s:Button x="242" y="297" label="ok" id="ok" click="nz()"/>
?<s:Button x="226" y="126" label="1" id="btn1" click="addnum('1')"/>
?<s:Button x="314" y="128" label="2" id="btn2" click="addnum('2')"/>
?<s:Button x="399" y="126" label="3" id="btn3" click="addnum('3')"/>
?<s:Button x="226" y="176" label="4" id="btn4" click="addnum('4')"/>
?<s:Button x="314" y="176" label="5" id="btn5" click="addnum('5')"/>
?<s:Button x="399" y="176" label="6" id="btn6" click="addnum('6')"/>
?<s:Button x="226" y="228" label="7" id="btn7" click="addnum('7')"/>
?<s:Button x="314" y="228" label="8" id="btn8" click="addnum('8')"/>
?<s:Button x="397" y="228" label="9" id="btn9" click="addnum('9')"/>
?<s:Button x="226" y="77" label="0" width="158" click="addnum('0')"/>
?<s:Button x="395" y="77" label="刪除" click="removenum()"/>
?<s:Label x="286" y="360" width="114" height="64" fontSize="31" fontFamily="細明體" chromeColor="#EBDCDF" color="#F11241" id="labelok"/>
?<fx:Script source="changebtn.as"></fx:Script>
</s:Application>

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changebtn.as

// ActionScript file
public function addnum(num:String){
?passwd.text+=num;?
}
public function reset(){
?passwd.text="";
}
public function nz(){
?labelok.text=passwd.text;
}
public function removenum(){
?var nums:String=passwd.text;
?if (nums.length>0) passwd.text=nums.substr(0,nums.length-1);
}

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flex-密碼輸入（計算器界面）