title: CreateFileMapping fails when 64-bit application reaches 2GB
body: <p>I have a 64-bit application WPF/C# which allocates memory using CreateFileMapping()
  the function returns error 1455 once I hit 2GB limit.</p>
  
  <p>My machine has 32GB RAM and page file is disabled.
  Can it be the CreateFileMapping(win32 API) works only on 32 bit?</p>
  
  <pre><code>_byteCount = (uint)((_stride) * height * ((short)bpp).NumberOfBytes());
  
   ColorFileMapping = CreateFileMapping(new IntPtr(-1), IntPtr.Zero, 0x04, 0, _byteCount, null);
  </code></pre>