How to hide a button after clicking another button in Flash?

Question

I am using actionscript 3 to make a point and click game. On frame 1 there are two buttons, button 1 and 2. On frame 3 there are two buttons, button A and B.

I want it

Answer 1

If you try to remove something that is not in the display list yet Flash will thrown an error. I guess the best solution here is setting up a timeline variable to keep track of which button you have pressed. Something like this:

on frame 1

var b1:Boolean = false;
var b2:Boolean = false;

button1.addEventListener(MouseEvent.MOUSE_DOWN, checkButton);
button2.addEventListener(MouseEvent.MOUSE_DOWN, checkButton);

function checkButton(e:MouseEvent):void
{
   if(e.target.name == button1) b1 = true;
   else b2 = true;

   gotoAndPlay(3);
}

on frame 3

myButtomA.visible = false;
myButtomB.visible = false;   

if (b1) myButtomA.visible = true;
if (b2) myButtomB.visible = true;