Delegate draw_cubic_to_func_t
public delegate void draw_cubic_to_func_t(nint dfuncs, nint drawData, nint st, float control1X, float control1Y, float control2X, float control2Y, float toX, float toY, nint userData)
public delegate void draw_cubic_to_func_t(nint dfuncs, nint drawData, nint st, float control1X, float control1Y, float control2X, float control2Y, float toX, float toY, nint userData)