Run through UI Elements

Question

Hi
I want to define change Eventlistener for all elements in a
mxml component dynamically ( myUI.mxml).
I tried this inside a class that extends canvas:
_ui = new myUI()
this.addChild(_ui);
for(var i in _ui){
_ui
.addEventListener(Event.CHANGE, valueChanged);
but the "for in" loop doesn`t do anything.
is there a way to run through all children/properties of a
mxml component?
thanks for help!
muzi

Answer 1

_ui is a new UI component you created and added. You
shouldn't be looping through it.
You can use:
this.getChildren() ;
It returns an array of UI components that are children of
your component. You can then loop through that array, cast each
element as a 'DisplayObject' and add event listeners to it.
Also helpful is:
getChildAt(index:int);
Returns a DisplayObject object at position 'index'.