用QT编写一个简单的图片浏览程序，运行该程序可以查看文件系统中的任何目录下的图片，包括jpeg,gif,bmp,png等格式。程序中能实现几个简单的功能：首先可以显示当前目录下的图片（如果有的话） 然后设置几个按钮，包括上一张，下一张，循环播放，分别点击这些按钮实现显示上一张图片，下一张图片，循环播放该目录下所有图片的功能；另外，在程序中设置了一个定时器，用来控制循环播放图片的时间间隔，该时间间隔会在Super-ARM的数码管上显示出来。-With QT. Write a simple picture browsing program to run the program can look at the pictures of any directory in the file system, including jpeg, GIF, BMP, PNG format. Program performs the function of a few simple: first, can display the current directory of images (if any)　And then set a few buttons, including on one piece, the next, looping, click on the button to achieve a picture on the display, respectively the next picture, looping of all of the images in the directory functions　In addition, in the program, set a timer is used to control loop for picture time interval, the interval will be displayed on the Super- ARM of digital tube.