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AS3 Detect if mouse is over the stage

/ Published in: ActionScript 3
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This is a pretty robust mouse detection technique. Use the mouseIsOver variable when deciding whether to do something (ie animation)

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  1. var mouseIsOver:Boolean = false;
  2. stage.addEventListener(MouseEvent.MOUSE_MOVE, mouseMoved);
  3.  
  4. function mouseMoved(evt:Event):void
  5. {
  6.   mouseIsOver = true;
  7.   stage.removeEventListener(MouseEvent.MOUSE_MOVE, mouseMoved);
  8.   stage.addEventListener(Event.MOUSE_LEAVE, mouseLeft);
  9. }
  10.  
  11. function mouseLeft(evt:Event):void
  12. {
  13.   mouseIsOver = false;
  14.   stage.removeEventListener(Event.MOUSE_LEAVE, mouseLeft);
  15.   stage.addEventListener(MouseEvent.MOUSE_MOVE, mouseMoved);
  16. }

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