VC JPG图片操作源码 包括图片的放大，缩小，拖动等， 很多不足之处还望见谅。,VC JPG picture, including picture of the source operation to enlarge, reduce drag and so on, a lot of inadequacies in hope that will be forgiven.

用VC打开jpg文件, jpg转bmp bmp转jpg格式-Jpg files using VC open, jpg to bmp bmp to jpg format