图片放大镜程序，用VC+MFC实现，效果不错。-Photo magnifier procedures, MFC with VC, its effectiveness.

简易实用的屏幕放大镜。蓝色的区域内显示的是被放大区域内容，窗口的右上角那个小按钮可以关键放大镜程序.-Simple and practical screen magnifier. Blue region is displayed within the enlarged zone contents, the upper right of the small button key magnifier procedures.