使用MFC编程，通过给定的点绘制4阶贝塞尔曲线的示例。由于是4阶贝塞尔曲线，因此通过鼠标左键定义的点数必须为4、7、10、13-The use of MFC programming, through a given point of order 4 Bezier curves drawn sample. Because it is 4-order Bezier curves, so the left mouse button through the definition of points mu