图片显示程序。主要用来与文件管理程序组合，可以组合成一个图片浏览器。在main函数里面修改路径即可更换要显示的图片。支持上一张、下一张、旋转、删除等操作。-Picture display program. Mainly used in combination with document management procedures, can be combined into an image browser. Modify the path which can be replaced in the