Jul 06, 2007 - Position popup when app is resized
PopUp maintains position at right of screen as the application is resized

The title says it all.  Note the check for the existence of the pop-up in the resize handler.

Tracy

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
    layout="vertical"
    creationComplete="initApp()"
    resize="onResize(event)">
<mx:Script><![CDATA[
 import mx.managers.PopUpManager;
 import mx.containers.Panel;

  private var _popup:Panel;

  /** Runs on creationComplete */
  private function initApp():void
 {
  _popup = Panel(PopUpManager.createPopUp(this,
                                Panel,
                                true));  //instantiate and show the popup
  _popup.width = 250;                                    //set some properties
  _popup.height = 80;
  _popup.title = "Resize App to test";
  _popup.x = this.width - 260;
 
 }//initApp
 
 /** Runs on application resize event */
 private function onResize(oEvent:Event):void
 {
   if (_popup) {                                        //test for existence of popup
     _popup.x =  this.width - 260;                      //re-position the popup
   }
 }//onResize
]]></mx:Script> 
</mx:Application>