How do you call a parent class'es method?

[5TonsOfFlax]

I'm pretty sure that by "parent" he meant displayList parent, rather than superclass.

The quick and dirty answer is that you can cast the parent to MovieClip to access dynamic properties:

var parentmc:MovieClip = parent as MovieClip;
trace("the value of WantThis in my parent class is "+parentmc.getWantThis());

The more involved answer is that you should not be reaching up the displayList to access things because that tightly couples the two classes (they no longer work independently).

You could define an interface which declares getWantThis and have your main class implement it. Then you can have a method in MyClass which takes an instance of that interface and uses it.

interface:

package {
  public interface WantThisProvider{

     function getWantThis():int;

  }
}

main:

package {

  public class Main extends MovieClip implements WantThisProvider{
    var WantThis:int = 7
    var myObject:MovieClip

    public function Main(){
      myObject = new MyClass();
      myObject.setWTProvider(this);
      addChild(myObject)
    }

    public function getWantThis():int{
      return WantThis;
    }
  }
}

MyClass:

package {
  public class MyClass extends MovieClip{
     private var wtprovider:WantThisProvider;
     
     public function MyClass(){

     }

     public function setWTProvider(wt:WantThisProvider):void{
       wtprovider = wt;
     }

     public function testWT():void{
       trace("the value of WantThis in my wtprovider is "+wtprovider.getWantThis());
     }

  }
}