[Interest] QtLinuxFB no mouse or keyboard

yahoo pers yours_pass at yahoo.com
Thu Sep 5 11:14:57 CEST 2013


Has anyone been able to do this?
Build Qt-static-linuxFB and deploy to a system without window manager?


________________________________
 From: yahoo pers <yours_pass at yahoo.com>
To: yahoo pers <yours_pass at yahoo.com>; Knight Andrew <Andrew.Knight at digia.com>; "interest at qt-project.org" <interest at qt-project.org> 
Sent: Saturday, August 31, 2013 5:27 PM
Subject: Re: [Interest] QtLinuxFB no mouse or keyboard
 


Does it make any difference that i have a static build?
Are the plugins supposed to work the same way or do i have to do anything else?


________________________________
 From: yahoo pers <yours_pass at yahoo.com>
To: Knight Andrew <Andrew.Knight at digia.com>; "interest at qt-project.org" <interest at qt-project.org> 
Sent: Friday, August 30, 2013 10:03 PM
Subject: Re: [Interest] QtLinuxFB no mouse or keyboard
 


My keyboard is detected as /dev/input/event0   and my  mouse  as /dev/input/mice
In my app i have a QLineEdit and when it starts i can see the cursor blinking in it.
I tried:
export QT_QPA_EVDEV_KEYBOARD_PARAMETERS="/dev/input/event0" 
sudo ./app -platform linuxfb

but still no keyboard.


then i tried:
./app -platform linuxfb -plugin EvdevKeyboard:/dev/input/event0
but still no keyboard.



________________________________
 From: Knight Andrew <Andrew.Knight at digia.com>
To: yahoo pers <yours_pass at yahoo.com>; "interest at qt-project.org" <interest at qt-project.org> 
Sent: Friday, August 30, 2013 7:43 AM
Subject: RE: [Interest] QtLinuxFB no mouse or keyboard
 

> A also wrote on the forum and i got help to build qt5 and run the app but couldn't get help about the mouse and keyboard problem.

Some QPA plugins, like LinuxFB, don't load their own input handlers, so you need to do this yourself by passing additional -plugin arguments when you start your app. These are called "generic" plugins and can be found in qtbase/src/plugins/generic. For example:

./myapp -platform linuxfb -plugin EvdevMouse -plugin EvdevKeyboard

Those plugins will automatically try to open the first mouse/keyboard in /dev/input. Make sure the user has read permissions for those devices (you should see warning messages if opening fails). For specifying additional parameters that get passed to the plugin(s), please consult
 each
 individual plugin's source code.

HTH,
Andrew







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