Have you ever needed to know a character’s Unicode character code and had to spend minutes (or hours) looking it up? Well, here’s a little trick I learnt recently. ActionScript 3.0 (and ActionScript 2.0) have a handy little charCodeAt() method in the String class which takes a numeric parameter which specifies the desired character index in a string, and returns the numeric Unicode character code for that index. A poor explanation, I know, so lets take a look at some code
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Similar to the previous post where we covered a couple of techniques for embedding an icon into a Button control, this post explores embedding an icon into an Alert control. An icon in an Alert control appears to the left of the alert’s message text, but the second example will show how you can easily tweak the code to also add icons to the nested buttons controls within the alert dialog itself. See the full code after the jump.
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There are two general methods for embedding an icon into a Button control. The first method involves creating a variable in the Flex application, and using the [Bindable] and [Embed] meta data. You specify the path to the icon in the source parameter of the Embed meta data and then to use the icon in a Button, you use data binding, which in this case would look like icon="{Icon}". The second method, embeds the icon inline in the Button tag itself, by using @Embed() and specifying the path to the image file as a parameter. See the full code after the jump.
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