在Linux中确定设备是否为触摸屏设备 [英] Determining if a device is a touchscreen device in linux

问题描述

我正在尝试确定/ dev / input / eventX设备是触摸屏。我目前正在查看EVIOCGNAME的返回以获取设备名称。查看EVIOCGBIT ioctl的返回值，我认为没有通用的方法可以确定什么是触摸屏。我对这种问题的任何解决方案都感兴趣。在此先感谢您的时间！！！

I am trying to determine what /dev/input/eventX device is the touchScreen. I am currently looking at the return of EVIOCGNAME to get device name. Looking at the return values of the EVIOCGBIT ioctl I don't think there is a generic way to determine what is the touchscreen. I am interested in any sort of solution to this problem. Thanks in advance for your time!!!

推荐答案

如果 ioctl（EV_ABS）返回的掩码包含 ABS_PRESSURE 和 ioctl（EV_KEY）包含 BTN_TOOL_FINGER ，则可能触摸屏。

If the mask returned by ioctl(EV_ABS) contains ABS_PRESSURE, and ioctl(EV_KEY) contains BTN_TOOL_FINGER, then it's probably a touchscreen.

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