Delegate draw_quadratic_to_func_t
public delegate void draw_quadratic_to_func_t(nint dfuncs, nint drawData, nint st, float controlX, float controlY, float toX, float toY, nint userData)
public delegate void draw_quadratic_to_func_t(nint dfuncs, nint drawData, nint st, float controlX, float controlY, float toX, float toY, nint userData)