regarding to conflict cap'n header file with windows header

[김동인]

hi. 

now. i am in difficulty situation that some of header files conflicting.

i haven't soloved this problem.

let me show my example code inorder to make you understand my situation T.T'

------------------ example code ------------------

#include <iostream>

#include <ws2tcpip.h>

#include <mswsock.h>

#include "test-my.capnp.h"

#include <capnp/message.h>

#include <capnp/serialize-packed.h>

int main()

{

    ::capnp::MallocMessageBuilder message;

    TestMy::Builder testBuilder = message.initRoot<TestMy>();

}

------------------------------------------------------

ws2tcpip.h and mswsock.h that i use in my main project conflict with some of capn header files.

if cap'n header files are used before ws2tcpip.h and mswsock.h, (below)

------------------ example code ------------------

#include "test-my.capnp.h"

#include <capnp/message.h>

#include <capnp/serialize-packed.h>

#include <iostream>

#include <ws2tcpip.h>

#include <mswsock.h>

int main()

{

    ::capnp::MallocMessageBuilder message;

    TestMy::Builder testBuilder = message.initRoot<TestMy>();

}

------------------------------------------------------

the problem will be solved.

but i feel that's very uncomfortable to use...

besides now i can not use that like that codes

because.... i am using precomplied header file in my project.

so....it has became very complicated situation.

could you give me good solution?

T.T

[Kenton Varda]

Hi,

Try adding this after including windows headers, but before capnp headers:

#include <kj/windows-sanity.h>

This header tries to work around some of the garbage that Windows headers leave in the global namespace.

-Kenton

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[김동인]

2020년 6월 15일 월요일 오전 12시 53분 34초 UTC+9, 김동인 님의 말:

it doesn't solve. (below)

#include <iostream>

#include <ws2tcpip.h>

#include <mswsock.h>

#include <kj/windows-sanity.h>

#include "test-my.capnp.h"

#include <capnp/message.h>

#include <capnp/serialize-packed.h>

int main()

{

    //::capnp::MallocMessageBuilder message;

    //TestMy::Builder testBuilder = message.initRoot<TestMy>();

}

is it right that i mean?

[Kenton Varda]

Please tell us the error you are seeing.

-Kenton

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[김동인]

There are a punch of Error Messages

so. i  have attached source codes in my test project.

my environment is VS2019.

and this is some of error messages. thank you 

[Kenton Varda]

The first error is the one that matters. Usually all the rest are side-effects of the first one.

Sorry but I can't debug this for you. You'll need to dig in a little more and figure out which name conflict is causing the error. Usually, it's because the Windows headers have #defined a macro that collides with an enum or constant declaration in capnp.

BTW, I noticed your code doesn't include windows.h, but only some other windows headers. You should probably include windows.h too. It might be that kj/windows-sanity.h only works after windows.h has been included...

-Kenton

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