MFC对话框实现均匀和指数分布 并输出实际期望和方差-MFC dialog to achieve uniform and exponential distribution

现矩形在窗口内沿着水平线匀速移动 实现了一个矩形在窗口中匀速转动（单击鼠标右键停止转动） -Now be rectangular in uniform move along the horizontal line within the window of a rectangle in the window uniform rotation (right-click to stop rotation)