用PictureBox和Graphics类实现了5张图片的走马灯动画效果。多张图片逐个弹出，一张图片由小逐渐放大的同时上一张图片逐渐缩小并消失。初学者学习的好例子-With PictureBox and Graphics class implements five pictures lantern animation effects. Multiple pictures one by one pop-up, a picture from small gradually enlarge at th