Flex 4 的十大变化(flex:4)

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<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/halo"><s:Button label="My Flex 4 Button" /><mx:Button label="My Flex 3 Button" /><!-- Given the states A,B,C --> <m:states> <m:State name="A"/> <m:State name="B"/> <m:State name="C"/> </m:states>

<!-- This button will appear in only states A and B --> <Button label="Click Me" includeIn="A, B"/>

<!-- This button will appear in states A and B --> <Button label="Button C" excludeFrom="C"/><?xml version="1.0" encoding="utf-8"?> <s:SparkSkin xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" alpha.disabled="0.5">

<fx:Metadata> <![CDATA[ /** * @copy spark.skins.default.ApplicationSkin#hostComponent */ [HostComponent("spark.components.Panel")] ]]> </fx:Metadata>

<fx:Script> /* Define the skin elements that should not be colorized. For panel, border and title backround are skinned, but the content area and title text are not. */ static private const exclusions:Array = ["background", "titleField", "contentGroup"];

/** * @copy spark.skins.SparkSkin#colorizeExclusions */ override public function get colorizeExclusions():Array {return exclusions;}

/* Define the content fill items that should be colored by the "contentBackgroundColor" style. */ static private const contentFill:Array = ["bgFill"];

/** * @inheritDoc */ override public function get contentItems():Array {return contentFill}; </fx:Script>

<s:states> <s:State name="normal" /> <s:State name="disabled" /> </s:states>

. . . . .

<s:Rect left="1" right="1" top="31" height="1"> <s:fill> <s:SolidColor /> </s:fill> </s:Rect>

<!-- layer 5: text --> <!-- Defines the appearance of the PanelSkin class's title bar. --> <s:SimpleText id="titleField" lineBreak="explicit" left="10" right="4" top="2" height="30" verticalAlign="middle" fontWeight="bold"> </s:SimpleText>

<s:Group id="contentGroup" left="1" right="1" top="32" bottom="1"> </s:Group>

</s:SparkSkin><s:Group width="400" height="400"> <s:layout> <s:HorizontalLayout paddingLeft="5" paddingTop="5" /> </s:layout>

<s:Button label="Button 1" /> <s:Button label="Button 2" /> </s:Group>