_WIN32_WINNT definition changed in header, does this cause a binary incompatibility?

c++,windows,visual-studio-2010,visual-studio,binary-compatibility

Short answer: Probably not, but if it does you're in a pretty pickle. Long answer: _WIN32_WINNT controls the version of the WinAPI (and related libraries such as MFC) that your code is going to use. The intent is to ensure that compiler errors are generated if you use Windows features...