Hi,

The relevant code that finds the maxTouchPoints value is int 
qtwebengine/src/3rdparty/chromium/ui/base/touch/touch_device_linux.cc inside 
the MaxTouchPoints() function. 

That function iterates over the available touchscreens (not touchpads though). 
Thus my initial guess is that the touchscreen is not detected for some reason. 
I would try to find where the list of touchscreen is populated and work from 
there.


> On 8. Sep 2017, at 13:33, Johannes Pointner <[email protected]> wrote:
> 
> Hi,
> 
> I'm trying to get the info from the browser if the device supports multitouch.
> There is a navigator object maxTouchPoints
> (https://developer.mozilla.org/en-US/docs/Web/API/Navigator/maxTouchPoints)
> which would do the trick.
> This works with Chromium in Linux and with Chrome and QtWebEngine in
> Windows but not with the QtWebEngine in Linux (ArchLinux).
> 
> Is this supported by the QtWebEngine under Linux?
> Is there something I missed (config build flag maybe)?
> 
> Thanks,
> Hannes
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