title: Eclipse Kepler CDT - Symbol 'HWND' could not be resolved
body: <p>I went through a small tutorial on creating GUIs with C++.
  <a href="http://www.jose.it-berater.org/smfforum/index.php?PHPSESSID=1f234ca7a3e61aebeeaae8b8f73a7125&amp;topic=3389.msg14548#msg14548" rel="nofollow">http://www.jose.it-berater.org/smfforum/index.php?PHPSESSID=1f234ca7a3e61aebeeaae8b8f73a7125&amp;topic=3389.msg14548#msg14548</a></p>
  
  <p>When I tried it out with Eclipse Kepler CDT I only got lots of Errors shown in the Editor which all sounded same:
  Type 'CALLBACK' could not be resolved.
  Type 'HWND' could not be resolved.
  [...]</p>
  
  <p>What have I done wrong? I have just copied the Sourcecode mentioned in this Tutorial...</p>