编程实现一个静态切分为左右两个窗口的 MDI 应用程序，并在左视图中统计右视图中 绘制圆的个数,实现文件的保存和读取；左右视图属于不同的视图类-Programming a static cut into about two MDI application window and draw a circle in the right view statistics of the number in the left view, save and read files to achieve vi