包括 stdafx.h winsock2 重新定义错误
当我包含 Winsock2.h 时，我收到大约 60 个重新定义错误。我四处寻找了一下，找到了一些建议，包括包含 windows.h 在内的 Winsock2.h b4。我这样做并清除了错误。我的问题和问题恰恰涉及我应该如何去做这件事。我没有明确包含 windows.h，它是在 stdafx.h 或 stdafx.cpp 中为我完成的。
我立即添加了包含winsock2.h b4包含Windows.h在stdafx.h中。这是解决这个问题的正确方法还是有更好的方法？
根据program_name.rc中的注释判断，我收集stdafx.h中包含的windows.h可能由于某些选项或配置参数而被放置在那里，但我无法找到此参考。有没有办法指定 stdafx.h 中包含哪些文件？
顺便说一句，WIN32_LEAN_AND_MEAN 是通过调用 stdafx.h 中的 windows.h 定义的。
我正在使用 Visual c++ 6.0 和“Windows Server 2003 PSDK” 该程序是直接的 c++，没有 mfc，没有 net，只是普通的 vanilla。
When I include winsock2.h, I get about 60 redefinition errors. I hunted around a bit a found some advice to include winsock2.h b4 including windows.h. I did that and that cleared up the errors. My problem and question concerns exactly how I should go about doing this. I did not explicitly include windows.h, it was done for me in stdafx.h or stdafx.cpp.
I added the include winsock2.h immediately b4 the include Windows.h in stdafx.h. Is this the right way to go about this or is there a better way?
Judging by a comment in program_name.rc I gather the windows.h include in stdafx.h may have been placed there as a result of some option or configuration parameter but I was unable to find this reference. Is there some way to specify what files are included in stdafx.h?
BTW, WIN32_LEAN_AND_MEAN was defined b4 calling windows.h in stdafx.h.
I am using Visual c++ 6.0 and 'Windows Server 2003 PSDK' The program is straight c++, no mfc, no net, just plain vanilla.
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您可以将几乎所有您想要的内容放入 stdafx.h 中。在windows.h 之前添加winsock2.h 的#include 当然没问题。我将移动 WIN32_LEAN_AND_MEAN 标头，以便在包含任何其他标头之前对其进行定义：
stdafx.h 是预编译标头的可怕名称。我不知道为什么 Visual Studio 仍然对所有自动生成的项目使用它。它给预编译头赋予了一种不应有的神秘感。在我的项目中，我通常设置预编译头以使用“precompiled.h”和“precompiled.cpp”。
Noel Llopis 有一篇关于预编译头的精彩文章 - 'The Care 和如果您想了解更多有关此处发生的情况的背景信息，请参阅预编译标头的馈送'。
You can put pretty much whatever you want into stdafx.h. It's certainly fine to add your #include for winsock2.h before the windows.h. I'd move the WIN32_LEAN_AND_MEAN header so that it's defined before you include any other headers:
stdafx.h is a horrendous name for the precompiled header. I have no idea why Visual Studio still uses this for all the autogenerated projects. It gives the precompiled header an undeserved air of mystery. In my projects I usually set up the precompiled header to use 'precompiled.h' and 'precompiled.cpp'.
Noel Llopis has a great article on precompiled headers - 'The Care and Feeding of Precompiled Headers' if you want a bit more background info on what's going on here.
那应该没问题。如果您查看winsock2.h，您可以看到它包含windows.h（如果尚未包含）。
That should work okay. If you look in winsock2.h, you can see that it includes windows.h if it hasn't already been included.
您需要确保 WinSock2.h 包含在 windows.h 之前，确保无论您在何处包含 WinSock2.h，它都包含在 stdafx.h 和/或 windows.h 之前
You need to make sure that WinSock2.h is included BEFORE windows.h, make sure that wherever you're including WinSock2.h, it is included before stdafx.h and/or windows.h