Keyboard Issue using vnc under Qtcreator

[SURbyte]

Hi. I am working with my RPi 2 under RASPBIAN JESSIE
Version:May 2016
Release date:2016-05-27
Kernel version:4.4
Release notes:Link

I installed tightvncserver on Pi and VNC Viewer on Windows 10.
Everything runs ok.
But under Qt each word appears like encrypted or different.
If I pressed 'b', it shows 's'.
For instance: this is a sequence from INPUT: abcdefg
OUTPUT on Qt for instance Mainwindows.cpp: asdfghj

some words acts like CR

Can anyone suggest me something?

[SGaist]

Hi and welcome to devnet,

What kind of keyboard do you have on your computer ? Is it QWERTY ?

[SURbyte]

Yes, it´s QWERTY.

[SGaist]

Are both your system using the same keyboard layout ?

[hskoglund]

Hi, on your WIndows 10, if you're using RealVNC's VNC Viewer, you could try TightVNC's VNC client instead.

[SURbyte]

Yes both are using same layout.

I found the solution.
VNCserver is the problem.
I'm using tightvncserver on RPi and tightvnc viewer or Real VNC Viewer on Win10 .

I searched for many hours and then found a thread with same problem.
Someone suggested him to use X11vnc. I installed it and works.

I had to change X11vnc resolution because by default shows like VGA or zoomed.
Follow this link Change default X11 display resolution

Qtcreator has problems under tightvncserver.
That´s is an issue to fix.

[SGaist]

Do other applications using Qt suffer the same problem ?

[dennis.restle]

Yes, i can confirm that this weird behaviour is also with labelImg with pyQT.
Everything works fine with VNC, the shell, Terminal,etc,etc....
except QT Keyboard input.

I'm Using ThightVNC from a Windows 10 Computer to Connect to my ThightVNC Server With Ubuntu 18.04.1 and xfce 4.12

When i use LabelImage i get a message:

Qt: XKEYBOARD extension not present on the X server.
Invalid locale

[SGaist]

What locale do you have ?