Keyboard issues

[SGaist]

Did you check whether you have the rights to access that device ?

[A Former User]

Yes I did. Currently, I'm running the application as root to avoid any problem related to the rights.

[SGaist]

Then call your application with QT_DEBUG_PLUGINS=1 set, you'll see if there's something happening with the plugins.

[A Former User]

Setting QT_DEBUG_PLUGINS=1 leads to no warnings nor messages. The pressed keys are still sent to the console.

[SGaist]

Can you show your configuration and the command used to launch your application ?

[A Former User]

It's a Raspberry Pi Model B+ running a linux buildroot o.s.:

@

uname -a

Linux rpi 3.12.26 #1 PREEMPT Thu Oct 2 20:45:27 CEST 2014 armv6l GNU/Linux
@

Here the command I use to launch my application:

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./myapp
@

I also tried:

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./myapp < /dev/tty1
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Even with the QT_QPA_EVDEV_KEYBOARD_PARAMETERS variable set, when I hit any key on the keyboard it will show the char on the console, instead of being grabbed by the application. I.e. no QCoreApplication::event() is emitted.

[SGaist]

What parameters did you set on QT_QPA_EVDEV_KEYBOARD_PARAMETERS ?

[A Former User]

As I said in a previous post I tried the following:

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export QT_QPA_EVDEV_KEYBOARD_PARAMETERS=‘grab=1’
export QT_QPA_EVDEV_KEYBOARD_PARAMETERS=‘/dev/input/input0;grab=1’
@

Anyway the keyboard is the only input device available and also the only USB device connected.

[SGaist]

Are you running your application through ssh ?

[A Former User]

The behavior is the same if either I launch the application through ssh or locally.

[Halo_Hao]

run：cat /proc/bus/input/devices