Welcome to the forums, Ruben. I am not a programmer and have no idea what you are talking about. However, there is one user I know of who may be able to help you and that is Joe Stackhouse, or Josephur. He has some knowledge of .NET programming and may be able to help you, though I am not sure he will receive your message. Others may reply in kind.
I'm not that familiar with the Windows API Code Pack, but I'm downloading it now, it seems very useful. Why half of this stuff isnt in .NET Framework 4.0 is beyond me...