IntPtr CopyToGlobalMemory(string text)
{
  var bytes = System.Text.Encoding.Default.GetBytes(text);
  var mem = Marshal.AllocHGlobal(bytes.Length + 1);
  Marshal.Copy(bytes, 0, mem, bytes.Length);
  bytes[0] = 0;
  Marshal.Copy(bytes, 0, (IntPtr)((long)mem + bytes.Length), 1);
  return mem;
}