I need to help about " Action Script 3 , public Function with Button " - actionscript-3

Question

Public function PencereyiGizle ( btn:Button )
{
....
....
}
I have a problem with the btn:Button
1046: Type was not found or was not a
compile-time constant:Button..
package
{
import flash.display.MovieClip;
import flash.display.NativeWindow;
import flash.display.NativeWindowInitOptions;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.display.SimpleButton;
public class PencereyiGizle extends MovieClip
{
public var natWindow:NativeWindow=new NativeWindow(
new NativeWindowInitOptions());
public var pencereyiAc_Btn:Button;
public function PencereyiGizle(fro:Button)
{
pencereAc_Btn = fro;
//Pencere ekleniyor
natWindow.width = 500;
natWindow.height = 400;
natWindow.activate();
natWindow.addEventListener(Event.CLOSING,pencereyiSakla);
pencereyiAc_Btn.label = "Pencereyi Ac";
pencereyiAc_Btn.addEventListener(MouseEvent.MOUSE_DOWN,pencereyiAktifEt);
}
//pencerenin kapanmasını engelleyip pencereyi gizliyoruz.;
private function pencereyiSakla(e:Event):void
{
e.preventDefault();
natWindow.visible = false;
}
//gizlenen pencereyi tekrar aktif hale getiriyoruz
private function pencereyiAktifEt(e:MouseEvent):void
{
natWindow.activate();
}
}
}
N AIR;
import PencereyiGizle;
var firat:PencereyiGizle= new PencereyiGizle();
addChild(firat);
and then, i get that problem "1046: Type was not found or was not a compile-time constant:Button. "
I have a problem with the btn:Button

Answer 1

You should use the import statement to import "Button"
Depending on your requirements it could either be
Spark Button
import spark.components.Button;
MX Button
import mx.controls.Button
UPDATE: Looks like this page has an answer to your question. Specifically check THIS answer

Answer 2

you problem is your class PencereyiGizle is looking for a button to be passed as a reference in the constructor which you are not doing
var firat:PencereyiGizle= new PencereyiGizle();
addChild(firat);
you need to pass either an instance name of a button
var firat:PencereyiGizle= new PencereyiGizle( someButton );
addChild(firat);
or create a new button and pass it along
var someButton:Button = new button
var firat:PencereyiGizle= new PencereyiGizle( someButton );
addChild(firat);