实现简单的交互式绘图！！现实绘制直线折线多边形，等-Simple interactive graphics! ! Reality straight line drawn polygon, etc.

用Visual C++开发CAD系统的一些基本功能，例如（画圆，画线，添加文本等等）-Develop CAD system by the tool of Visual C++ ,for example ,draw circle,add text

A schematic of invertor, and layout using MyCAD. All files include.

使用vc++实现的一个简单的画图程序，其中主要是由CMyCADView类中的函数完成了画线的功能，主要是：OnDraw、OnLButtonDown和OnMouseMove这三个函数-Using vc++ implementation of a simple drawing program, which is mainly a function of the class by the CMyCADView completed the painting line, and mainly: OnDra