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POExtending Flex FileReference class to contain another property
 

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  1. POExtending Flex FileReference class to contain another property
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    <p>I want to extend the FileReference class of Flex to contain a custom property. I want to do this because AS3 doesn't let me pass arguments to functions through event listeners, which makes me feel sad, so I need this property to exist on the event target, so I can access it.</p> <p>I also want to be able to cast extant FileReference objects to this class without any fuss. I have:</p> <pre><code>var fr:SmxFR = e.target as SmxFR </code></pre> <p>and I want that to work; right now it just returns null.</p> <p>A blank, newly instantiated <code>SmxFR</code> object has the extended property in place, but all of its inherited properties and objects return <code>Error: Error #2037: Functions called in incorrect sequence, or earlier call was unsuccessful.</code></p> <p>This is the class I am using, <code>SmxFR.as</code>:</p> <pre><code>package { import flash.net.FileReference; public class SmxFR extends FileReference { public var housenum:String = ""; public function SmxFR() { super(); } } } </code></pre> <p>Kept it as straightforward as I could, really. Can someone please help me figure this out? Thanks.</p> <hr> <p>Edit:</p> <p>Per request, this is the instantiation which results in the aforementioned error in all inherited objects:</p> <pre><code>var fr:SmxFR = new SmxFR(); </code></pre> <p>I get living handle property from that, and all other (that is, inherited) properties throw <code>Error #2037</code>.</p> <hr> <p>So, maybe what I want to do is going to require overriding <code>FileReferenceList</code>? If the original objects must be instantiated to <code>SxmFR</code>, that's what I'll have to do, since I'm using FRL to allow the user to select multiple files at once. Are you guys sure there is no way to fast from a <code>FileReference</code> to my class?</p>
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    1. USjeffcook2150
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    1. COwas e.target instantiated as a SmxFR Class?
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      1. USjochil
    2. CONo, it was instantiated as `FileReference`. I want to be able to cast from FileReference to SmxFR easily.
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      1. USjeffcook2150
    3. COYou have to instantiate it as SmxFR. All SmxFR objects are FileReferene objects too, but not the other way.
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      1. POExtending Flex FileReference class to contain another property
      1. USAmarghosh
 

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