blocks|key|1399281|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1399282|是否有办法在C%2B%2B中暂时挂起或覆盖操作系统关机/重启？|blockquote|1399283|1399284|1399285|在标准C%2B%2B中没有这样的功能。|1399286|除非有一个特定于平台的应用程序接口来实现这一点，否则恐怕您将无法在C%2B%2B中挂起或覆盖操作系统关闭/重启操作。|1399287|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|L|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|M|7|@]|8|@]|9|$]]|$1|D|3|-4|4|5|6|N|7|@]|8|@]|9|$]]|$1|E|3|-4|4|5|6|O|7|@]|8|@]|9|$]]|$1|F|3|G|4|5|6|P|7|@]|8|@]|9|$]]|$1|H|3|I|4|5|6|Q|7|@]|8|@]|9|$]]|$1|J|3|-4|4|5|6|R|7|@]|8|@]|9|$]]]|K|$]]

<blockquote>
 Is there a way to temporarily suspend, or override, an OS shutdown/restart in C++?
</blockquote>

There is no such functionality in standard C++.

Unless there is a platform-specific API to do that, I am afraid you won't be able suspend or override an OS shutdown/restart operation in C++.

blocks|key|1399306|text|在C%2B%2B中没有这方面的功能。而是典型的GUI+(Windows、Mac等)将通知您的应用程序挂起的关闭，以便您可以进行最后的处理。这是特定于操作系统的，并受其规则的约束。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1399307|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

There's nothing in C++ for this. But a typical GUI (Windows, Mac, etc.) will notify your application of a pending shutdown so that you can do final processing. That's specific to the OS, and subject to its rules.

blocks|key|5183265|text|要覆盖计划/正在进行的关闭，您可以执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5183266|适用于Windows+7|5183267|system("shutdown+/a");|code-block|syntax|javascript|5183268|对于Linux|5183269|system("shutdown+-c");|5183270|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

To override a scheduled/in progress shutdown you can:

For Windows 7

<pre><code>system("shutdown /a");
</code></pre>

For Linux

<pre><code>system("shutdown -c");
</code></pre>

blocks|key|1399367|text|我已经在谷歌上搜索了how+to+detect+Linux+shutdown/reboot的相关文章，但似乎很难实现您的目的。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1399368|我的想法是:如果您可以将您的程序添加为服务，linux系统将在其关闭之前关闭该服务。|1399369|祝好运|1399370|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/22009705/how-to-detect-linux-shutdown-reboot^0|A|Z|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]]]

I have googled the related article that <a href="https://stackoverflow.com/questions/22009705/how-to-detect-linux-shutdown-reboot">how to detect Linux shutdown/reboot</a>
But it seems hard to implement for your purpose.

What comes from my mind is; if you can add your program as a service, the linux system will closing the service in advance of its shutdown.

Good Luck

blocks|key|1301699|text|感谢所有的回复和想法！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1301700|从收到的反馈来看，似乎没有一种“安全”和跨平台的方法可以使用C%2B%2B轻松实现这些功能。|1301701|Pete+Becker提到，每个操作系统都可能有特定的规则。这是有道理的，而且这些规则也总是会发生变化。|offset|length|1301702|其他人建议使用system()命令。然而，这可能会在系统中引入更多的问题和漏洞(1)+(2)+(可能会有更好的解释和/或示例，所以如果你找到了，请编辑这篇文章)。|style|CODE|1301703|考虑到上述所有因素，我的建议是将应用程序配置为让用户通过GUI手动执行这些进程(完全由他们决定)，或者在操作系统启动时执行这些进程，或者两者兼而有之。|1301704|再次感谢所有回复的人！|1301705|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/users/1593860/pete-becker|1|https://www.securecoding.cert.org/confluence/pages/viewpage.action?pageId=2130132|2|http://www.cplusplus.com/forum/articles/11153/^0|0|0|0|B|0|0|7|8|13|3|1|17|3|2|0|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|12|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|13|8|@]|9|@$F|14|G|15|1|16]]|A|$]]|$1|H|3|I|5|6|7|17|8|@$F|18|G|19|J|K]]|9|@$F|1A|G|1B|1|1C]|$F|1D|G|1E|1|1F]]|A|$]]|$1|L|3|M|5|6|7|1G|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1H|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]]|Q|$R|$5|S|T|U|A|$V|W]]|X|$5|S|T|U|A|$V|Y]]|Z|$5|S|T|U|A|$V|10]]]]

Thanks to all responses and ideas!

Judging by the responses received, it seems there is no "safe" and cross-platform way of achieving such functionality easily using C++.

<a href="https://stackoverflow.com/users/1593860/pete-becker">Pete Becker</a> mentioned there could be specific rules per Operating System. This makes sense, and these rules are also always subject to change.

Others have suggested using the <code>system()</code> command. However, this would potentially introduce further issues and vulnerabilities <a href="https://www.securecoding.cert.org/confluence/pages/viewpage.action?pageId=2130132" rel="nofollow noreferrer">(1)</a> <a href="http://www.cplusplus.com/forum/articles/11153/" rel="nofollow noreferrer">(2)</a> into the system (there may be better explanations and/or examples, so please edit this post if/when you find them).

Considering all of the above, my suggestion would be to configure the application to either have the user manually execute these processes via a GUI (leaving it entirely up to them), execute these processes on startup of the Operating System or both.

Thanks again to all who responded!

I'm planning to develop a cross-platform application that may need to do processing prior to the user's Operating System shutting down or restarting. Is there a way to temporarily suspend, or override, an OS shutdown/restart in C++?

As an aside, this feature will be entirely the user's choice via configuration and disabled by default.

I feel this might not be possible without being invasive to the Operating System, but I thought I'd ask for the community's thoughts.

If my only option is to somewhat "hack" the OS in order to achieve this feature, then I'll not pursue this idea any further. :)

Thanks in advance!

Is there a way to suspend OS shutdown or restart in C++?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我计划开发一个跨平台的应用程序，它可能需要在用户的操作系统关闭或重新启动之前进行处理。是否有办法在C++中暂时挂起或覆盖操作系统关机/重启？另外，此功能将完全由用户通过配置进行选择，并在默认情况下被禁用。我觉得如果不对操作系统进行入侵，这可能是不可能的，但我想我应该征求社区的意见。如果我唯一的选择是为了实现这个功能而对操作系统进行某种程度的“黑客攻击”，那么我就不会再追求这个想法了。:)提前感谢！

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