c++ - 如何摆脱 _WIN32_WINNT 未定义警告？

Question

_WIN32_WINNT not defined. Defaulting to _WIN32_WINNT_MAXVER (see WinSDKVer.h)

这个错误在我的编译过程中不断弹出。它似乎不影响编译，但我应该如何摆脱它？我是否会因为忽略它而冒任何风险？

Answer 1

将其设置为您希望程序在其上运行的最旧的 Windows 操作系统。 此 MSDN 文章 Using the Windows Headers 中给出了可能的值。 .

You can define these symbols by using the #define statement in each source file, or by specifying the /D compiler option supported by Visual C++.

For example, to set WINVER in your source file, use the following statement:

 #define WINVER 0x0502    // Windows Server 2003 with SP1, Windows XP with SP2

To set _WIN32_WINNT in your source file, use the following statement:

#define _WIN32_WINNT 0x0502    // Windows Server 2003 with SP1, Windows XP with SP2

To set _WIN32_WINNT using the /D compiler option, use the following command:

cl -c /D_WIN32_WINNT=0x0502 source.cpp