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copied!<p>Well there is no standard solution for this. You could create a custom class which overrides the setters of width/height/x/y/scaleX/scaleY/scrollRect .. and maybe some other properties. The children should extend such a class.</p> <p>I used a boolean to prevent its dispatched multiple times, after a frame the flag will be resetted.</p> <pre><code>override public function set width(value:Number):void { if (value !== super.width && !isNaN(Number(value)) this.dispatchResize(); super.width = value; } override public function set height(value:Number):void { if (value !== super.height && !isNaN(Number(value)) this.dispatchResize(); super.height = value; } override public function set scaleX(value:Number):void { if (value !== super.scaleX && !isNaN(Number(value)) this.dispatchResize(); super.scaleX = value; } override public function set scaleY(value:Number):void { if (value !== super.scaleY && !isNaN(Number(value)) this.dispatchResize(); super.scaleY = value; } private var _hasDispatchedResize:Boolean; protected function dispatchResize():void { // do something if (!this._hasDispatchedResize) { this.dispatchEvent(new Event(Event.RESIZE)); this._hasDispatchedResize = true; this.addEventListener(Event.ENTER_FRAME, handleEnterFrameOnce); } } private function handleEnterFrameOnce(event:Event):void { this.removeEventListener(Event.ENTER_FRAME, handleEnterFrameOnce); this._hasDispatchedResize = false; } </code></pre> <p>Now, in the container class you can listen to a <code>Event.RESIZE</code> of the children. Your not really sure if the value actually changed (in case of a frame change on a MovieClip), but in most cases this will work. I've added an extra check inside this setters before dispatching the resize. It depends on the case if this will suit your case.</p>

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