有没有办法在Windows上以C ++编程方式设置环境路径？ [英] Is there a way to set the environment path programmatically in C++ on Windows?

问题描述

有没有办法通过编程方式设置全局窗口路径环境变量（C ++）？


就我所见，putenv只为当前应用程序设置。

在注册表中直接更改（HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment）也是一个选项，虽然我更喜欢API方法如果有？

Is there a way to set the global windows path environment variable programmatically (C++)?

As far as I can see, putenv sets it only for the current application.
Changing directly in the registry (HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment) is also an option though I would prefer API methods if there are?

推荐答案

MSDN 说：

调用SetEnvironmentVariable没有
对系统环境的影响
变量。 以编程方式添加或
修改系统环境变量
将它们添加到
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session
Manager \Environment注册表键
播放一个WM_SETTINGCHANGE消息
与lParam设置为字符串
环境。这允许
应用程序，如shell，
拿起你的更新。请注意，此密钥中列出的环境变量
的
值限制为1024
个字符。

Calling SetEnvironmentVariable has no effect on the system environment variables. To programmatically add or modify system environment variables, add them to the HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment registry key, then broadcast a WM_SETTINGCHANGE message with lParam set to the string "Environment". This allows applications, such as the shell, to pick up your updates. Note that the values of the environment variables listed in this key are limited to 1024 characters.

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