+#ifndef WINVER
+ // the only exception to the above is MSVC 6 which has a time bomb in its
+ // headers: they warn against using them with WINVER >= 0x0500 as they
+ // contain only part of the declarations and they're not always correct, so
+ // don't define WINVER for it at all as this allows everything to work as
+ // expected both with standard VC6 headers (which define WINVER as 0x0400
+ // by default) and headers from a newer SDK (which may define it as 0x0500)
+ #if !defined(__VISUALC__) || (__VISUALC__ >= 1300)
+ #define WINVER 0x0600
+ #endif
+#endif
+