class
 MouseEvent
            CLICK:String        
                            DBL_CLICK:String        
                            MOUSE_DOWN:String        
                            MOUSE_MOVE:String        
                            MOUSE_OUT:String        
                            MOUSE_OVER:String        
                            MOUSE_UP:String        
                            MOUSE_WHEEL:String        
                            RIGHT_CLICK:String        
                            RIGHT_MOUSE_DOWN:String        
                            RIGHT_MOUSE_UP:String        
                            buttonDown:Bool        
                            ctrlKey:Bool        
                            delta:Float        
                            localX:Null<Float>        
                            localY:Null<Float>        
                            screenX:Float        
                            screenY:Float        
                            shiftKey:Bool        
                            touchEvent:Bool        
                    