какая буква под курсором мыши? AS3 ответит!

ниже приведен код, который показавает как можно определить, какой символ находится под курсором мыши.

package {

import flash.display.TextField
import flash.text.TextFormat
import flash.display.Sprite
import flash.events.Event
import flash.events.EventType

public class TestTextPosition extends Sprite {

var textfield1:TextField = new TextField()
var textfield2:TextField = new TextField()
var textformat1:TextFormat = new TextFormat()
var textformat2:TextFormat = new TextFormat()
var textformat3:TextFormat = new TextFormat()

public function TestTextPosition () {
textformat1.font = "Arial"
textformat1.color = 0x0000ff
textformat1.size = 60

textformat2.font = "Arial"
textformat2.color = 0x0000ff
textformat2.size = 20

textformat3.font = "Arial"
textformat3.color = 0x000000
textformat3.size = 14

textfield1.width = 400
textfield1.height = 55
textfield1.multiline = true
textfield1.wordWrap = true
textfield1.type = "input"
textfield1.text = "Roll your mouse over this text to see something neat.\n"
textfield1.text += "Change the text to see that it is really dynamic."
addChild(textfield1)

textfield2.x = 10
textfield2.y = 50
textfield2.width = 100
textfield2.height = 100
textfield2.selectable = false
textfield2.border = true
textfield2.background = true
textfield2.backgroundColor = 0xffffaa
textfield2.defaultTextFormat = textformat1
addChild(textfield2)

this.addEventListener(EventType.ENTER_FRAME, enterFrameListener)
}

public function enterFrameListener(event:Event) {
textfield1.setTextFormat(textformat3)
var charIndex:int = textfield1.getCharIndexAtPoint(stage.mouseX,stage.mouseY)
textfield1.setTextFormat(textformat2,charIndex,charIndex+1)
textfield2.text = textfield1.text.charAt(charIndex)
}
}
}