VC++绘制几何图形，并实现填充，这些几何图形主要有直线、椭圆、矩形，同时还可以设置线宽和填充色，画完图形点击油漆桶工具可填充所画图形中的闭合部分-VC++ to draw geometric shapes, and to achieve filling, these geometric shapes are a straight line, oval, rectangular, and also can set the line width and fill color, click the

利用最小二乘法拟合直线和曲线，绘制出对比图形；简单绘制多种三维图形的代码-least-square fiting and draw graph