interaction with keyboard/textfields help please

Normally for a string to object is converted as follows.

var obj:object=getChildByName("string");

And we can give properties to it like obj.x=100;But in the case of a series of stings

[objet Stage].[object MainTimeline].[object TextField]

it wil not works.Actually i need to give properties to a target path which is a string what i do?? Here is the开发者_如何学编程 code to get path to a movieclip:

 addEventListener(MouseEvent.CLICK, targetMC);
function targetMC(MouseEvent:Event):void
{
 var curinstance = MouseEvent.target.valueOf();
 var targ:Object = curinstance.parent;
 var path = curinstance;
 do
 {
  if (targ == "[object Stage]")
  {
   path = targ + "." + path;
  }
  else
  {

   path = targ + "." + path;
  }

  targ = targ.parent;
 } while (targ);


 trace(path);

}

i would like to give properties to path.

A number of things are awkward about your code:

1. Don't compare the string value of objects to find out about class type. Use the is keyword:

   if (obj.parent is Stage) doSomething();
   

2. Don't use class names as parameter names: MouseEvent is a type!

   function targetMC ( ev:MouseEvent ) // ...more code
   

3. It is useful to name handler methods according to the event upon which they are invoked, for example:

   function onMouseClick (ev:MouseEvent) 
   

   or

   function mouseClickHandler (ev:MouseEvent) 
   

4. If you can avoid it, don't cast to Object to access members, but try to use subclass types - it allows the compiler to more effectively check your code for errors. Since all objects in the display list are instances of DisplayObject, you could use this:

   var obj:DisplayObject = ev.target as DisplayObject;
   

5. If you want to output a path to your object, use instance names instead of types - you might have more than one TextField!

   private function getObjectPath (obj:DisplayObject) : String {
       var path:String = obj.name;
       if (obj.parent != null && !(obj.parent is Stage)) {
           path = getObjectPath (obj.parent) + "." + path;
       }
       return path;
   }
   

Now for your answer: Use the KeyboardEvent.

textField.addEventListener (KeyboardEvent.KEY_UP, onKeyUp);

and

private function onKeyUp (ev:KeyboardEvent) : void {
    var tf:TextField = ev.target as TextField;
    var text:String = tf.text;
    tf.text = text + String.fromCharCode(charCode);
} 

Note that this will only work as long as the TextField has focus, that is the user has to click it first.

If you need to pass a key charCode to a TextField, the latter should listen to a KeyboardEvent and retrieve the info from the event's charCode property
http://www.adobe.com/livedocs/flash/9.0/ActionScriptLangRefV3/

Your perspective of AS3 is "different"... For instance getChildByName doesn't convert a String to an Object, it basically does what the method name states , it retrieves a parent's child using its name as a reference.

It looks like you're adapting whatever language you're coming from to AS3. I doubt this will work...