Pass class as constructor's argument - actionscript-3

Question

I'm trying to pass my object class as constructor argument. I have something like this:
package myclass {
import flash.display.MovieClip;
import flash.display.BitmapData;
import flash.display.Bitmap;
public class Example extends MovieClip {
public var _stageImg:Bitmap;
public var _stageData:BitmapData;
public var _stageClass:Class;
private var _stage:Object;
public function Example(stageClass:Class) {
_stageClass = stageClass;
}
public function createStage():Object {
_stageData = new _stageClass(0,0);
_stageImg = new Bitmap(_stageData);
_stage = addChild(_stageImg);
return _stage;
}
}
}
Now, when I try to create my Example:
import myclass.Example;
var example:Example = new Example(myObjClass);
I get message, that I'm not passing any variable (Error #1063). Why is that? What is wrong with it?

Answer 1

You are passing an instance of your class instead of the definition of the class itself.
In ActionScript it's a bit clunky, but you can get the class definition of an instance like this:
//first get the fully qualified classname, i.e. including the package
var className:String = getQualifiedClassName(myObjInstance);
//then get the class definition for that name
var Klass:Class = getDefinitionByName(className) as Class;
//and finally pass it to your constructor
var example:Example = new Example(Klass);
(note: I named the variable 'Klass' because 'Class' is a reserved keyword)