你可以...

private function mouseDown(e:MouseEvent):void
    {
        addEventListener(MouseEvent.MOUSE_MOVE, handleMouseMove);
    }

    private function handleMouseMove(e:MouseEvent):void
    {
        //Code to get display object if mouseX and Y is intercepting a cell
        //Tell said cell that it has been selected
    }

    private function mouseUp(e:MouseEvent):void
    {
        removeEventListener(MouseEvent.MOUSE_MOVE, handleMouseMove);
    }

Here's一些是从一个快速搜索如何检测鼠标是否在一个显示对象上。应用它，你就可以了。