在窗口中显示出26个英文字母，从左向右字母依次位置提高10个象素单位，并且颜色变为红色，然后回到正常位置；当到达最右端后改变方向从右向左依次变成红色并位置提高10个象素单位-26 letters, in the window display from left to right letter position in order to improve the 10 pixel units, and the color turns red, then back to the normal posit