Is there any way of adding an image to a bar in a chart in ExtJS via the highlight property?

I want to add an icon in the column/bar onMouseOver and was wondering if highlight already supported that. The docs say you can add whatever Sprite has available to the highlight object ( http://docs.sencha.com/ext-js/4-0/#/api/Ext.chart.series.Bar-cfg-highlight however even in the 开发者_StackOverflow中文版Sprite definition ( http://docs.sencha.com/ext-js/4-0/#/api/Ext.draw.Sprite ) there's no mention of how to do this beyond setting the type to image.

Any ideas would be greatly appreciated.

Thanks!

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From the docs there doesn't seem to be an easy way of doing this. The Sprite class supports addCls and removeCls methods though, you could try setting a className to the sprite element and see whether a background image for an element with that className works. Otherwise the sprite element for the bar chart would have to be redefined into something more complex that takes images as a component.

In future, you should post over on the Sencha forums as you will get a quicker response.