Loader onComplete not firing

Question

This is my script, very simple. But the event listener is not
firing. I'm obviously missing something but I can't see what. Can
one of you flash mavens please help me here? Thanks in advance.
var ldr:Loader = new Loader();
ldr.addEventListener(Event.COMPLETE, load_complete);
var urlReq:URLRequest = new URLRequest("images/image0.jpg");
ldr.load(urlReq);
function load_complete(e:Event) {
trace("load complete");
}

Answer 1

You need to add the listener to contentLoaderInfo - not
loader:
ldr.contentLoaderInfo.addEventListener(Event.COMPLETE,
load_complete);