设置DateChooser控件的头部文字对齐方式.

DateChooser控件的textAlign 和 headerStyleName 样式。
示例:

代码：

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/06/05/aligning-headers-in-a-datechooser-control-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <mx:Script>
        <![CDATA[
            import mx.events.ListEvent;

            private function comboBox_change(evt:ListEvent):void {
                var cssObj:CSSStyleDeclaration = StyleManager.getStyleDeclaration(".dateChooserHeaderStyles");
                cssObj.setStyle("textAlign", comboBox.selectedItem);
            }
        ]]>
    </mx:Script>

    <mx:Style>
        .dateChooserHeaderStyles {
            fontWeight: bold;
            textAlign: left;
        }
    </mx:Style>

    <mx:ApplicationControlBar dock="true">
        <mx:Form styleName="plain">
            <mx:FormItem label="textAlign:">
                <mx:ComboBox id="comboBox"
                        dataProvider="[left,center,right]"
                        change="comboBox_change(event);" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>

    <mx:DateChooser id="dateChooser"
            headerStyleName="dateChooserHeaderStyles" />

</mx:Application>