如何以编程方式防止linux计算机休眠或打开屏保? [英] How to programmatically prevent linux computer from sleeping or turning on screensaver?

问题描述

在C ++上开发小型跨平台游戏时，我遇到了以下问题:当玩家在不触摸键盘或鼠标的情况下使用USB游戏板进行游戏时，计算机在游戏时会自动进入睡眠状态.

While developing a small cross-platform game on C++, I got stuck with following issue: when players are playing with a USB gamepad without touching a keyboard or mouse, the computer sleeps automatically while they're playing.

在Windows中，可以使用 SetThreadExecutionState 函数.我认为在OS X中，可以使用 UpdateSystemActivity ，但尚未测试.

In Windows, it can be done easily using SetThreadExecutionState function. In OS X, I think it can be done with UpdateSystemActivity but not tested yet.

但是问题是，在Linux中，没有什么像DE之间的通用API一样.我发现在Gnome中，您可以通过使用DBus调用 Inhibit()和 Uninhibit()来停止自动暂停，但这仅适用于Gnome.

But the problem is, in Linux there's nothing like a common API between DE's. I've found that in Gnome you can stop the auto-suspending by using DBus calls Inhibit() and Uninhibit(), but it works only for Gnome.

因此，是否存在以编程方式进行跨DE的方式(或非DE的方式)，例如，如果用户使用的是 dwm 或 awesome wm )防止 Linux 系统(使用 Xorg 并且没有root访问权限)在不更改用户配置文件的情况下休眠或打开屏幕保护程序?

So, is there exists a programatically cross-DE way (or non-DE way, for example if user is using something like dwm or awesome wm) to prevent a Linux system (using Xorg and without root access of course) from sleeping or turning on screensaver without changing user configuration files?

PS:不要以为它太复杂了，但是不知道它是多么不幸.

PS: Don't think that it's too complicated, but don't know how unfortunately.

推荐答案

通过快速查看mplayer和SDL如何做到这一点，您可以执行两项操作来防止屏幕保护程序启动:

From a quick look at how mplayer and SDL do it, there are two things you can do to prevent the screensaver from firing up:

• 在程序运行期间将其禁用:
  • 使用 XScreenSaverSuspend
  • 使用DBus，调用 org.freedesktop.ScreenSaver.Inhibit
  • 使用 XResetScreenSaver
  • 使用DBus，调用 org.freedesktop.ScreenSaver.SimulateUserActivity

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