Create a flash calculator

Result of my flash calculator.

Design idea in ActionScript 3.0:
1) Create a background image Movie Clip bg (no buttons and operators) and linkage to class bg:

//create background instance

var calcbg:bg=new bg();

//Define background x coordinate

//calcbg.x=0;

//Define background y coordinate

calcbg.y=0;

//Define background transparency

calcbg.alpha=0.9;

// Show background on stage

addChild (calcbg);

2) Create a display output box Movie Clip resultbg and linkage to class resultbg:

//create output box  instance

var rbg:resultbg=new resultbg();

//Define output box x coordinate (cm):

//rbg.x=20;

//Define output box y coordinate

rbg.y=40;

//Define the width of output box

rbg.width = 200;

//Define the height of the output box

rbg.height = 20;

// Show output box on stage

addChild (rbg);

3)  Add Button and Label from component to library.

//Import Button and Label class from library

import fl.controls.Button;

import fl.controls.Label;

// Create "+" Button

var ADD:Button = new Button();

//Create "-" Button

var MINUS:Button = new Button();

//Create "X"  Button

var MULTIPLY:Button = new Button();

//Create "/" Button

var DIVIDE:Button = new Button();

//Create "=" Button

var EQUAL:Button = new Button();

//Create "clear" Button

var CLS:Button = new Button();

//Add lable "+" on ADD button

 ADD.label = "+";

// When mouse click Add button, operatorClick function is called

ADD.addEventListener (MouseEvent.CLICK, operatorClick);

//Show ADD button on stage

addChild (ADD);

 //Define

 ADD.x = 145;

  ADD.y = 70;

  ADD.width = 30;

  ADD.height =30;

 //The same process is applied to other buttons

var operator:String = "";

//Check if the input is a new number

var numnew:Boolean = true;

//Create "=" Button

EQUAL.label = "=";

//Call equalClick when "+" button is clicked

EQUAL.addEventListener (MouseEvent.CLICK, equalClick);

addChild (EQUAL);

//Action when clicking operator button

function operatorClick (e:MouseEvent) {

    EQUAL.dispatchEvent (new MouseEvent(MouseEvent.CLICK));

// Once dispatched, the target property of the event object is set to the object on which //dispatchEvent() was called Used for e.target

    operator = Button(e.target).label;

    numnew = true;

}

4. Operator and results

//Output result

var resultField:TextField = new TextField();

//When click "=" button

function equalClick (e:MouseEvent) {
    if ("" == operator) {
        num1 = Number(resultField.text);
    } else if ("+" == operator) {
        num2 = Number(resultField.text);
        num1 += num2;
    } else if ("-" == operator) {
        num2 = Number(resultField.text);
        num1 -= num2;
    } else if ("×" == operator) {
        num2 = Number(resultField.text);
        num1 *= num2;
    } else if ("÷" == operator) {
        num2 = Number(resultField.text);
        num1 /= num2;
    }
    resultField.text = String(num1);
    numnew = true;
    operator = "";
}
 5. Create nine buttons for 1 to 9 digits

for (var i = 0; i<=9; i++) {
    numbutt[i] = new Button();
    numbutt[i].label = i;
    numbutt[i].addEventListener (MouseEvent.CLICK,numClick);
    addChild (numbutt[i]);
}

// distribut them in different positions

    for (var i:int = 0; i<=9; i++) {
        numbutt[i].width = 30;
        numbutt[i].height = 30;
        if (i>0) {
            numbutt[i].x=5+40*((i-1)%3)+20;
            numbutt[i].y=30+40*int((i-1)/3)+40;
        } else {
            numbutt[i].x=5+calcx;
            numbutt[i].y=150+calcy;
        }

//Add them on stage

for (var i = 0; i<=9; i++) {
    numbutt[i] = new Button();
    numbutt[i].label = i;
    numbutt[i].addEventListener (MouseEvent.CLICK,numClick);
    addChild (numbutt[i]);
}

//When the number button is click

function numClick (e:MouseEvent) {
    if (numnew) {
        resultField.text ="";
    }
    if (resultField.length<29) {
        resultField.appendText (Button(e.target).label);

    } else {
        resultField.appendText ("");
    }
    numnew = false;

}