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Editorial Team
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Asked: 2026-06-09T19:05:19+00:00

I’m trying to use a FXG image as the icon for a button that

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I’m trying to use a FXG image as the icon for a button that also contains a caption. My FXG file is located at resources/SpeakerIcon.fxg and my attempted usage looks like this in my mxml file:

     <mx:Button id="audioButton" label="Audio"
                   ....
                   icon="{resources.SpeakerIcon}"/>

When I try to use this I get “TypeError: Error #1034: Type Coercion failed: cannot convert resources::SpeakerIcon@41fa0e1 to mx.core.IFlexDisplayObject.” My research indicates that FXG files should be s:Graphics which do implement IFlexDisplayObject http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/spark/primitives/Graphic.html.

What simple thing am I missing?

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1 Answer

  1. Editorial Team

    The <s:Graphics/> object is different than the <Graphics/> tag in an FXG document.

    <s:Graphics/> is the base class for Spark primitive shape components (like <s:Rect/>). These are not as lightweight as their FXG counterparts. As such they do not implement the IFlexDisplayObject interface (as @Flextras has just posted 🙂

    FXG assets can be treated as SpriteVisualElement in your Flex code, which technically means FXG assets implement the IVisualElement interface.

    If you can, use the Spark <s:Button/> class instead of mx. I don’t think <mx:Button/> works with FXG.

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