Cairo.NativeMethods.cairo_device_reference C# (CSharp) Метод

        internal static extern IntPtr cairo_device_reference(IntPtr device);

        internal Device(IntPtr handle)
        {
            if (handle == IntPtr.Zero)
            {
                throw new ArgumentException("handle should not be NULL", "handle");
            }

            this.handle = NativeMethods.cairo_device_reference(handle);
        }