利用vc单文档绘制的贝塞尔曲线，是学习单文档gdi绘图的有效参考，同时对贝塞尔曲线的形成原理做了介绍-Vc use a single document drawn Bezier curves, a single document to learn effective gdi drawing reference, at the same time the formation of the principle of Bezier curves introduced