title: getting rid of _WIN32_WINNT not defined.
body: <p>I'm trying to get rid of the _WIN32_WINNT not defined:</p>
  
  <p><em>_WIN32_WINNT not defined. Defaulting to _WIN32_WINNT_MAXVER (see WinSDKVer.h)</em></p>
  
  <p>I'm running VS 2010 on Win 7 and am trying to recompile a MFC project orginally complied in Win CE.</p>
  
  <p>I've had a look at WinSDKVer.h and can see what its going on about but I can't figure out where WIN32_WINNT is being defined/set in the first place.</p>
  
  <p>The $(OS) is set to Windows_NT if i look under the macro section of pre-prosessor definitions but i can't change it. Not sure if thats anything to do with it?</p>
  
  <p>Any thoughts?</p>
  
  <p>Many Thanks</p>