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

Hi! Hello,

I use a boost asio library in my program. When I compile with Visual C++ obtain this error:

[...]\boost_1_45_0\boost\asio\detail\socket_types.hpp(22): fatal error C1189: #error : WinSock.h has already been included

How can I fix this error?

Try to include asio before including any other Windows-Headers, or use WinSock2.h instead of WinSock. Best Regards, michi7x7