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Use focus manager to set focus to a control

<?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">     <mx:Script>                     private function reset(event:Event):void {           focusManager.setFocus(d);         }               </mx:Script>     <mx:VBox height="100%">       <mx:Grid>         <mx:GridRow>           <mx:GridItem>             <mx:TextInput id="a" tabIndex="1" />           </mx:GridItem>           <mx:GridItem>             <mx:TextInput id="c" tabIndex="3" />           </mx:GridItem>         </mx:GridRow>         <mx:GridRow>           <mx:GridItem>             <mx:TextInput id="b" tabIndex="2" />           </mx:GridItem>           <mx:GridItem>             <mx:TextInput id="d" tabIndex="4" />           </mx:GridItem>         </mx:GridRow>       </mx:Grid>       <mx:Button label="Reset" click="reset(event)"/>     </mx:VBox> </mx:Application>