CDrawKaleidoscope类中封装了绘制屏幕万花筒的功能，通过rand函数随机取出小圆半径的大小，使用COS和sin求出小园上的点，然后使用CDC类的Line To方法将各个点进行连接。-CDrawKaleidoscope class encapsulates kaleidoscope draw the screen functions are picked randomly by the rand function size small circle radius calculated

gui基本操作，包含菜单，现场菜单和各类控件统合，实现sin函数的图像操作。-gui basic operations, including menus, scene menu and various control and integration, to achieve the image manipulation functions sin