Inheritance question

programming flash
1

Hi! A simple (I think) question. Well, 2 classes in src/ihn:



//A.as

package src.inh{

	public class A{
		
		import flash.display.DisplayObjectContainer;
		import flash.display.Sprite;
				
			
		public var box:DisplayObjectContainer;
				
		public function A(box:DisplayObjectContainer){
			this.box = box;
		}
				
		public function traceA(){
			trace('A method');
		}
				
	}//fine classe
}//fine package




//B.as

package src.inh{

		public class B extends A{

				
				public function B(){
	
				}
				
				
		}//fine classe
}//fine package

And in the flash timeline:


var a = new A(this);

var b = new B(this);

b.traceA();

This code gives me this error:

[COLOR=“Red”]1203: No default constructor found in base class src.inh:A.

(see next post: )