Installing QtVirtualKeyboard on a Qt Widget App

Deneguil

Hello, I'm trying to add the QtVirtualKeyboard to an existing Qt Widget App but I'm having trouble doing so. I'm using QtCreator and Qt version 5.15.2.
I started by trying to add qputenv("QT_IM_MODULE", QByteArray("qtvirtualkeyboard")); to the main.cpp file and QT += virtualkeyboard in the .pro file but I got a "unknown module" error.

Now I'm trying to compile the source code for the keyboard but when running it I'm having these errors.

How do I go about adding the keyboard to my app?
Thank you

jsulm

@Deneguil said in Installing QtVirtualKeyboard on a Qt Widget App:

Now I'm trying to compile the source code for the keyboard

It would be actually easier to install Qt Virtual Keyboard instead.
How did you install Qt and on which OS?

Deneguil

@jsulm I'm on a raspberry pi 4 running raspbian, and to be honest I'm not sure how Qt was installed it was already on it when given to me for the project and the person who installed it forgot how he did it

jsulm

@Deneguil Are you cross-compiling?
To install virtual keyboard on RaspberryPI install these packages using apt:

libqt5virtualkeyboard5
libqt5virtualkeyboard5-dev

Deneguil

@jsulm It's for an embedded app so it'll only run on a raspberry
Thank you for the packages, I now need to add QT += virtualkeyboard in the .pro file and create an input panel to use the keyboard right?

jsulm

@Deneguil yes

Deneguil

@jsulm thank you you've helped me a lot the keyboard works I only need to style it now

nadimnadaf

QT += virtualkeyboard
Project ERROR: Unknown module(s) in QT: virtualkeyboard
In My case , this will error will generated
OS : linux (I am using a imx board for crosscompiling)
Qt5

jsulm

@nadimnadaf If you read this thread you will see what the solution was.
Did you try that?

nadimnadaf

@jsulm Yes

SGaist

Hi,

So what exactly did you do to install Qt on your target ?
Use distribution packages ?
Deployed your cross-compiled Qt ?
If the latter, did you cross-compile the module as well ?

nadimnadaf

@SGaist said in Installing QtVirtualKeyboard on a Qt Widget App:

So what exactly did you do to install Qt on your target ?

Its a Yocto Setup.

jsulm

@nadimnadaf said in Installing QtVirtualKeyboard on a Qt Widget App:

Its a Yocto Setup.

Then you also have to build QtVirtualKeyboard module using Yocto I guess