如何以编程方式获取屏幕DPI(linux，mac)? [英] How to get screen DPI (linux,mac) programatically?

问题描述

我需要了解Linux和Mac OS上的活动屏幕DPI.我认为在Linux xlib上可能很有用，但是我找不到找到正确DPI的方法. 我希望该信息获得以英寸为单位的实际屏幕尺寸.

I need to know active screen DPI on Linux and Mac OS. I think on linux xlib might be useful, but I can't find a way how to get currect DPI. I want this information to get real screen size in inches.

提前谢谢！

推荐答案

在Linux上的X中，调用XOpenDisplay()获取Display，然后将DisplayWidthMM()和DisplayHeightMM()以及DisplayWidth()和以计算DPI.

In X on Linux, call XOpenDisplay() to get the Display, then use DisplayWidthMM() and DisplayHeightMM() together with DisplayWidth() and DisplayHeight() to compute the DPI.

在Mac上，几乎可以肯定要使用比X更多的本机API.MacOS X默认情况下不运行X Window，它具有本机窗口环境.

On the Mac, there's almost certainly a more native API to use than X. Mac OS X does not run X Window by default, it has a native windowing environment.

这篇关于如何以编程方式获取屏幕DPI(linux，mac)?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！