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    <p>It certainly is. Add the images you want to include in your Flex app, then embed them in your code like this:</p> <pre><code>&lt;fx:Script&gt; &lt;![CDATA[ [Embed(source="assets/images/yes.jpg")] [Bindable] public var YesIcon:Class; ]]&gt; &lt;/fx:Script&gt; &lt;mx:Image source="{YesIcon}" /&gt; </code></pre> <p>If you really want to use this in a toolTip, here's a good article on how to do that: <a href="http://blog.flexmp.com/2008/09/10/flex-custom-tooltip-speech-bubble/" rel="nofollow">http://blog.flexmp.com/2008/09/10/flex-custom-tooltip-speech-bubble/</a></p> <p><strong>EDIT:</strong> Here's a quick and dirty example of how to preload your images into an ArrayCollection when your application starts. You'll want to add some code to make sure all of your images are loaded before enabling the application or performing some other action, but again this should get you started.</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;s:Group xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" creationComplete="creationCompleteHandler(event)"&gt; &lt;fx:Script&gt; &lt;![CDATA[ import mx.collections.ArrayCollection; import mx.events.FlexEvent; private var imageArray:ArrayCollection = new ArrayCollection(); private var imageArrayIndex:int = 0; private var imagesToLoad:ArrayCollection = new ArrayCollection(); protected function creationCompleteHandler(event:FlexEvent):void { // Load your XML into the "imagesToLoad" ArrayCollection. // This should contain your list of images we need to load. PreloadImages(); } protected function PreloadImages():void { var request:URLRequest = new URLRequest(imageArray[imageArrayIndex]); var imageLoader:Loader = new Loader(); var loaderContext:LoaderContext = new LoaderContext(); loaderContext.checkPolicyFile = true; imageLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, PreloadImage_CompleteHandler); imageLoader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, PreloadImage_ErrorHandler); imageLoader.load(request,loaderContext); } // Called when the Loader we declared in PreloadImages() is done loading the image. protected function PreloadImage_CompleteHandler(event:Event):void { imageArray[imageArrayIndex] = new Bitmap(Bitmap(event.currentTarget.content).bitmapData); // Check to see if there's still images that need to be loaded. if (imageArrayIndex &lt; imagesToLoad.length - 1) { imageArrayIndex = imageArrayIndex + 1; PreloadImages(); } } // Called when the Loader we declared in PreloadImages() encountered an error trying to load the image. protected function PreloadImage_ErrorHandler(event:Event):void { Alert.show(imageArray[imageArrayIndex].toString() + " could not be loaded.\n\nPlease make sure the file exists."); // Check to see if there's still images that need to be loaded. if (imageArrayIndex &lt; imageArray.length - 1) { imageArrayIndex = imageArrayIndex + 1; PreloadImages(); } } ]]&gt; &lt;/fx:Script&gt; &lt;/s:Group&gt; </code></pre> <p>Another good component you may want to check out is the Flex BulkLoader created by Arthur Debert. It may also work well for your needs. </p> <p><a href="https://github.com/arthur-debert/BulkLoader" rel="nofollow">https://github.com/arthur-debert/BulkLoader</a></p>
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    1. COHi! Thanx. Very usefull article. But I use about 50-70 pics. I have a source code is loaded from XML. Must I create a variable for each image?
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    2. COIf it's always the same 50-70 images then yes, I would create a variable for each image so they get embedded in your app. If the images could change each time the app is run, I would loop through the xml and load each image into an Array of Bitmap objects when the application starts up. The images wouldn't be embedded, but you could use Bitmap objects in the Array as the source for your images and it should get rid of the delay.
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    3. COThank you. True, I do not quite understand how to implement such load each image in the background.
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