VS2012 C++ warning C4005: '__useHeader': macro redefinition

Question

While migrating an old C++ project from Visual Studio 6 up to Visual Studio 2012, we came across an odd set of warnings from inside the standard Microsoft platform headers:<

Answer 1

Adding #define _USING_V110_SDK71_ in Stdafx.cpp or Stdafx.h would not work if your cpp files do not have precompiled headers.

To solve this problem, the following works.

Right-click project in Solution Explorer* → Properties → C/C++ → Preprocessor → Preprocessor definition → edit → Add _USING_V110_SDK71_