Trouble in loading external swf file and embedded font dynamically

Question

I have developed a flex application doing something like this: it loads A.swf from somewhere and show it on the stage
sometimes A uses fonts not installed on users' machine, so at this time my app will load B.swf with needed fonts embedded in it from another place
I have working it out that fonts in B.swf can be detected and shown in my app stage, but when I use SWFLoader to show A.swf, it still fails in showing the fonts properly...
Some of my codes pasted here:
// load fonts
private function onFontBytesLoadComplete(e:Event):void {
var data:ByteArray = e.target.data as ByteArray;
swfLoader.addEventListener(Event.COMPLETE, onSWFLoadComplete);
swfLoader.source = data;
private function onSWFLoadComplete(e:Event):void {
loadSM = SystemManager(swfLoader.content);
loadSM.addEventListener(FlexEvent.APPLICATION_COMPLETE, onFontLoadComplete);
private function onFontLoadComplete(e:FlexEvent):void {
var clazz:Class = loadSM.loaderInfo.applicationDomain.getDefinition(fontName) as Class;
var fun:Function = clazz.getFont as Function;
var fontClazz:Class = fun();
var font:Font = new fontClazz() as Font;
trace(getQualifiedClassName(new fontClazz()));
Font.registerFont(fontClazz);
if(loadFinishedHandler != null) {
loadFinishedHandler(fontName);
Anyone has idea about this? 3x~

Answer 1

Hm, yes, I remember there being some challenges in this regards, with Modules loading fonts at runtime.
If you take a look at the section "Using run-time style sheets with modules," they describe the basic approach where everything has to be loaded and registered in the primary application domain.
I think it should work fine the way you have it, provided you are registering both the font and the loaded SWF in the primary application domain. If not, you may need to push the font registration down into the application domain being used by the loaded SWF.
Something like this perhaps:
childApplicatonDomain.getDefinition('flash.text.Font').registerFont(fontClass);
Where childApplicatonDomain is the application domain of the loaded SWF.