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layout: docpage title: MXML description: The declarative XML-based user interface markup language permalink: /features/mxml
MXML
The declarative XML-based user interface markup language
MXML is an XML language that you use, when building an application in Royale, to lay out user-interface components.
<?xml version="1.0" encoding="utf-8"?>
<j:Group xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:j="library://ns.apache.org/royale/jewel"
xmlns:html="library://ns.apache.org/royale/html">
<fx:Script>
<![CDATA[
private function clickHandler(event:MouseEvent):void {
button.emphasis = (button.emphasis == Button.PRIMARY) ? "" : Button.PRIMARY;
}
]]>
</fx:Script>
<j:Card width="600">
<html:H3 text="items expand test"/>
<j:HGroup itemsExpand="true" gap="3">
<j:Button text="Hello" click="clickHandler(event)"/>
<j:Button text="Apache"/>
<j:Button text="Royale!!!!"/>
</j:HGroup>
</j:Card>
</j:Group>