Define the properties of the high-low lines and candlestick borders by using a Stroke class
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<!-- charts/CandlestickStyles.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:mx="library://ns.adobe.com/flex/mx" xmlns:s="library://ns.adobe.com/flex/spark"
height="600">
<fx:Script>
import mx.collections.ArrayCollection;
[Bindable]
private var goog:ArrayCollection = new ArrayCollection( [
{date:"1/1/2001",open:42.57,high:43.08,low:42.08,close:42.75},
{date:"1/1/2002",open:42.89,high:43.5,low:42.61,close:43.19},
{date:"1/1/2003",open:43.19,high:43.31,low:42.77,close:43.22}
]);
</fx:Script>
<s:layout>
<s:VerticalLayout />
</s:layout>
<s:Panel title="Candlestick Chart">
<s:layout>
<s:VerticalLayout />
</s:layout>
<mx:CandlestickChart id="mychart"
dataProvider="{goog}" showDataTips="true"
height="400" width="400">
<mx:verticalAxis>
<mx:LinearAxis title="linear axis" minimum="40"
maximum="50" />
</mx:verticalAxis>
<mx:horizontalAxis>
<mx:DateTimeAxis dataUnits="days" />
</mx:horizontalAxis>
<mx:series>
<mx:CandlestickSeries openField="open"
highField="high" lowField="low" closeField="close" displayName="TICKER"
xField="date">
<mx:fill>
<mx:SolidColor color="green" />
</mx:fill>
<mx:declineFill>
<mx:SolidColor color="red" />
</mx:declineFill>
<mx:stroke>
<mx:SolidColorStroke weight="1" color="black" />
</mx:stroke>
</mx:CandlestickSeries>
</mx:series>
</mx:CandlestickChart>
<mx:Legend dataProvider="{mychart}" />
</s:Panel>
</s:Application>
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