Re: [Boost-users] "WinSock.h has already been included" : problem with asio and VC++2010

If you use "Windows.h" library, set "#define WIN32_LEAN_AND_MEAN" in "stdafx.h" or a suitable place to avoid the duplication. from Hee-young -- View this message in context: http://boost.2283326.n4.nabble.com/WinSock-h-has-already-been-included-probl... Sent from the Boost - Users mailing list archive at Nabble.com.