不错的一个电子器件绘制系统，适合初学MFC的程序员，由于时间关系，界面只做了个大概地设计，但不影响主要的功能实现，初学者可以自行设计以促进对MFC的了解.-Nice drawing system, an electronic device, suitable for beginners MFC programmer, due to time, the interface is probably only had months to design, but does not affect the