问题描述
所有用 MSVC 创建的项目都有 stdafx，它是预编译的头文件，我知道它们是什么，但是 targetver.h 呢?它包括 SDKDDKVer.h，我找不到那个标题是什么.
All project created with MSVC have stdafx, which is precompiled headers, which I know what they are but what about targetver.h ? It includes SDKDDKVer.h, and I can't find what is that header about.
这是干什么用的?
推荐答案
targetver.h 和 SDKDDKVer.h 用于控制哪些函数、常量等是根据您希望程序支持的操作系统，从 Windows 头文件包含到您的代码中.我相信 targetver.h 将默认设置为使用最新版本的 Windows，除非在其他地方指定了定义.
targetver.h and SDKDDKVer.h are used to control what functions, constants, etc. are included into your code from the Windows headers, based on the OS that you want your program to support. I believe that targetver.h sets defaults to using the latest version of Windows unless the defines are specified elsewhere.
SDKDDKVer.h 是头文件，实际定义了#defines，代表Windows、IE等各个版本
SDKDDKVer.h is the header file that actually defines the #defines that represent each version of Windows, IE, etc.
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