Question

Is it possible to read the SWF version of a loaded SWF into a main one?

var mcl:Loader = new Loader();
mcl.contentLoaderInfo.addEventListener (Event.COMPLETE, prepareDisplay(mcl));
mcl.load (new URLRequest ('movie.swf'));

function prepareDisplay (mcl:Loader):Function {
    return function (e:Event):void {
        mcl.contentLoaderInfo.removeEventListener (Event.COMPLETE, prepareDisplay);
        media_container.addChild(mcl);
        // how can I get the loaded swf version from here?
    }
}

Answer 1

You should be able to check the swfVersion property of the Loaders contentLoaderInfo LoaderInfo object.

trace(mcl.contentLoaderInfo.swfVersion);

Constants can be used from:
http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/display/SWFVersion.html