origin教程，书中包含了基本的画图所需要的方案，例子等-origin tutorials, the book contains the basic programs needed for drawing, examples, etc.

对初学者很有用的画图基本方法。学习的入门方法。-The basic method of drawing useful for beginners. Learning the way to get started.

用mfc制作简单的画图软件，实现绘制圆，三角形，矩形等基本图形，可以旋转，放大缩小等基本功能-Using MFC to write a drawing software, you can draw a circle, line, triangle and other basic graphics, you can achieve rotation, zoom and other basic functions