Introduction - If you have any usage issues, please Google them yourself
in VC use OpenGL seven paintings curve : Bezier curve; 3-(2) uniform B-spline curves; 3-(2) quasi-uniform B-spline curves; 3-(2) B-spline curves; 4 bands (3) Uniform B-spline curves; 4 bands (3) quasi-uniform B-spline curves; 4 bands (3) B-spline curves