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

[Claude]

Hi!

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?

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[michi7x7]

> 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

[Hee-young Kim]

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

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[Claude]

I solved the problem, thanks!

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