简单模拟MouseEvent.ROLL_OUT MouseEvent.ROLL_OVER MouseEvent.MOUSE_MOVE

//rollover指示ROLL_OVER事件，ROLL_OUT事件，rect用于检测的Rectangle，overPoint用于检测MOUSE_MOVE事件var rollover : Boolean = false;var rect : Rectangle = new Rectangle(0,0,200,300);var overPoint : Point; addEventListener(Event.ENTER_FRAME, enterFrameHandler);private function enterFrameHandler(event : Event) : void { var mousePoint : Point = new Point(stage.mouseX, stage.mouseY); if(rect.containsPoint(mousePoint)) { //鼠标进入rect范围 if(!rollover){ //鼠标首次进入rect rollover = true; overPoint = mousePoint; trace("ROLL_OVER"); }else{ //鼠标在rect内移动 if(overPoint && Point.distance(overPoint, mousePoint) != 0){ overPoint = mousePoint; trace("MOUSE_MOVE"); } } }else{ //鼠标移出rect范围 if(rollover){ //鼠标首次移出rect rollover = false; trace("ROLL_OUT"); } } }

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