On 14 January 2014 20:13, Vijay Kiran Kamuju <infyquest at gmail.com> wrote: > Hi All, > > I am confused now, as I can see few header files which have L"" strings in them. > > eg:winnt.h, uxtheme.h, softpub.h, etc > Those are all behind some variant of "#if defined(_MSC_VER)". I.e., they'll only get used on MSVC.