从Haskell找到X11屏幕的数量 [英] Finding the number of X11 screens from Haskell

问题描述

我想知道当前机器有多少X屏幕，使我的.xmonad更一般;我有一个上网本以及一个带有两个显示器的桌面，我也使用几个单独的被监控的机器。

I'd like to know how many X screens the current machine has, to make my .xmonad a little more general; I have a netbook as well as a desktop with two monitors, and I use several single monitored machines too.

为此，我想了解当前机器有多少X屏幕。 （我认为屏幕是正确的话，我的意思是物理监视器）。

To this end, I'd like to be able to find out how many X screens the current machine has. (I think screens is the correct words, I mean physical monitors).

原因是我想要xmobar的多个实例，每个显示器一个。

The reason being is that I want multiple instances of xmobar, one per monitor. I've hard coded it to be on two at the moment.

推荐答案

如果您使用 X11软件包：

 import Graphics.X11.Xinerama (getScreenInfo)

将会动态地返回 Rectangle 的列表，告诉你多少个屏幕及其尺寸。

that will dynamically return a list of Rectangles, telling you how many screens, and their dimensions.

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