Win32.NativeWin32MemoryDc.Dispose C# (CSharp) Method

        public void Dispose()
        {
            if (isDisposed)
            {
                return;
            }

            if (hRgn != IntPtr.Zero)
            {
                MyWin32.DeleteObject(hRgn);
                hRgn = IntPtr.Zero;
            }


            MyWin32.ReleaseMemoryHdc(memHdc, dib);
            dib = IntPtr.Zero;
            memHdc = IntPtr.Zero;
            isDisposed = true;
        }
        public void PatBlt(PatBltColor color)