C++ WinSock2.h 中的重新定义错误
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redefinition errors in WinSock2.h
提问by T.T.T.
Including winsock2.h, in a file of a project.
包括 winsock2.h，在一个项目的文件中。
Getting many errors in -WinSock2.h(109) : error C2011: 'fd_set' : 'struct' type redefinition
with a corresponding -WinSock.h(54) : see declaration of 'fd_set'
在 -WinSock2.h(109) : error C2011: 'fd_set' : 'struct' type redefinition
与相应的 - 中出现许多错误WinSock.h(54) : see declaration of 'fd_set'
I don't see winsock.h included in any of the headers.
我没有看到任何标题中包含 winsock.h。
Are there any setting in the project that may be causing this?
项目中是否有任何设置可能导致这种情况？
EDIT
However, I am using windows.h in another file:
http://cboard.cprogramming.com/windows-programming/41212-strange-msvc-winsock2-compile-error.html
编辑
但是，我在另一个文件中使用 windows.h：http:
//cboard.cprogramming.com/windows-programming/41212-strange-msvc-winsock2-compile-error.html
EDIT 2
In the header I have:
编辑 2
在标题中我有：
#include <winsock2.h>
#include <iphlpapi.h>
#include "\MyFiles\FileX.h" <-which #include <windows.h>
回答by Jim Brissom
My educated guess would be the order of included headers, i.e. include winsock2.hfirst (with first meaning before windows.h), or define WIN32_LEAN_AND_MEAN before including windows.h, which prevents windows.h from including winsock v1.
我有根据的猜测是包含标题的顺序，即winsock2.h首先包含（第一个含义之前windows.h），或者在包含之前定义 WIN32_LEAN_AND_MEAN windows.h，这会阻止 windows.h 包含 winsock v1。
#include <winsock2.h>
#include <windows.h>
-or-
-或者-
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <winsock2.h>
回答by kiriloff
After some headache: I made sure that an #include "Winsock2.h"is before any #include "windows.h"and "#include "Winsock.h"and this solved the case.
有些头痛后：我确信的#include "Winsock2.h"是之前的任何#include "windows.h"和"#include "Winsock.h"这解决了问题。
I checked the recursive includes, I spotted the header files which include (recursively) some #include "windows.h"and "#include "Winsock.h"and write a #include "Winsock2.h". in this files, i added #include "Winsock2.h"as the first include.
我检查递归包括，我看到的头文件，其中包括（递归地）一些#include "windows.h"和"#include "Winsock.h"和写#include "Winsock2.h"。在这个文件中，我添加#include "Winsock2.h"为第一个包含。
Just a matter of patience, look at includes one by one and establish this order, first #include "Winsock2.h"then #include "windows.h"
耐心一点，一一查看include并建立这个顺序，先 #include "Winsock2.h"然后#include "windows.h"
