Automatically resizing a Label instance in Flash using ActionScript 3.0

// ActionScript 3.0
/* Requires:
 * A Label control in your Flash library.
 */
import fl.controls.Label;
 
var myLabel:Label = new Label();
myLabel.text = "The quick brown fox jumped over the lazy dog";
myLabel.autoSize = TextFieldAutoSize.LEFT;
myLabel.move(10, 10);
addChild(myLabel);

// ActionScript 3.0
/* Requires:
 * A Label control in your Flash library.
 */
// Import the required component classes.
import fl.controls.Label;
import fl.events.ComponentEvent;
 
/* Create a new Label component instance, set the text and autoSize 
   properties, and add the label to the display list. */
var myLabel:Label = new Label();
myLabel.text = "The quick brown fox jumped over the lazy dog";
myLabel.autoSize = TextFieldAutoSize.LEFT;
myLabel.move(10, 10);
myLabel.addEventListener(ComponentEvent.RESIZE, resizeHandler);
addChild(myLabel);
 
/* Create a new Label component instance, set the autoSize property, and 
   add the label to the display list. This label is used to display the 
   width and height of the myLabel instance. */
var debugLabel:Label = new Label();
debugLabel.text = "";
debugLabel.autoSize = TextFieldAutoSize.LEFT;
debugLabel.move(10, 30);
addChild(debugLabel);
 
/* Handler function for the myLabel instance. This function gets called 
   when the myLabel instance is resized, and sets the text in the 
   debugLabel instance with the width and height of the myLabel 
   instance. */
function resizeHandler(evt:ComponentEvent):void {
    var lbl:Label = evt.currentTarget as Label;
    debugLabel.text = "[" + evt.type + "] width:" + myLabel.width + ", height:" + myLabel.height;
}