基于MFC开发的一个简单地登陆界面和一个复制粘贴的小模块一起的窗口，界面虽然有点乱，但是比较适合初学者了解和学习。-Window based MFC developers landed a simple interface and small modules together with a copy and paste, the interface has a bit of a mess, but more suitable for beginners to understand and lea