Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

Questions tagged [qt]

a cross-platform application framework for developing application software

127 questions
2
votes
1 answer

Does a binary built on pi 3 will work on pi 2?

I'm building an app on a raspberry pi 3. I'm using Qt. Will the generated binary work on raspberry pi 2? Thanks
Julien
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2
votes
3 answers

Qt for Raspberry 2

I saw many threads about setting up Qt on Rpi v.1. RPi 2 is using ARMv7 architecture so probably toolchain for ARMv6 won't work like described here Additionally I would like to compile from Windows, is there any suitable cross-compiler for it?
Michal Majeran
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2
votes
1 answer

Unable to drag and drop widgets in Qt Designer

I got a Qt 4 installation using sudo apt-get install qtcreator. I am able to get everything to compile using gcc 4.8. However, when it comes to using Qt Designer to edit the UI of a window, Qt Designer fails. Whenever I drag a widget over the…
Towerism
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1
vote
1 answer

qtcreator desktop kit is greyed out

Its been quite a while since my last raspberry pi project. I went ahead and bought a new Rpi 4B and installed a fresh Raspbian OS on it and installed qt the way i remember it $ sudo apt-get install qt5-default #This does not work anymore i used an…
DrakeJest
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1
vote
1 answer

Download QT 5.12.0 on my Raspberry fails

I currently have the 5.11.3 Qt Version on my Raspberry 3 B+. For another program, I want to use I need at least Qt 5.12.0. When I try sudo apt-get install qt5-default it says that I already downloaded the latest version which is 5.11.3. I already…
PatriciaAM
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1
vote
0 answers

Horizontal lines on qt 5.13 app . Problem doesn't present with virtual screen (chvt) manipulation

I have a full-screen app in kiosk mode that runs on qt 5.13.2 (Qt compiled from source). Up until 1 week ago, it displayed just fine. Then, I did an apt dist-upgrade and I now get horizontal lines and gobbley-goop: However, I can hack around this…
Ross Rogers
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0
votes
1 answer

Run Qt Application on Raspberry Pi 3

I'm very new to Qt. I want to start developing GUI Qt application in C++ on raspberry pi. I want to start this application in Kiosk mode on boot. I manage to do it, but I encounter the following problem: When I start the compiled application on the…
Angel
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0
votes
1 answer

Need libraries and code for LED dotmatrix driven by MAX7219

I'm using Qt on Raspberry Pi 2 and I'm going to connect 8X8 LED dotmatrix driven by MAX7219. I need libraries and code for that.
Rama Abd Al-Hak
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0
votes
1 answer

Cross compile problem with libsndfile in QtCreator

I can cross compile simple Qt Project from Windows (Qt Creator) to RPi, following that. How can I add libsndfile to my project? I installed libsndfile to RPi then re-sync RPi<->PC with QtCrossTool. But then?
SimaWB
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0
votes
0 answers

Run QT5 app (chiaki remote play) on raspberry OS lite

I would like to run Chiaki (Playstation Remote Play https://github.com/Fredrum/chiaki) on my raspberrypi zero WH running raspberrypiOS lite (so no GUI). running chiaki itself on a raspberry pi(zero included) with a GUI is already…
Paolo Squadrito
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0
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0 answers

Could not initialize egl display

I have a CentOS host which should be used to develop Qt applications (version 5.12.8) for a Raspberry Pi. I use the following Raspberry Pi setup: $ cat /proc/cpuinfo ... model name : ARMv7 Processor rev 4 (v7l) ... $ cat…
Kampi
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1 answer

QT build error: "WARNING: TARGET is empty" and "make: nothing to be done for "first""

I recently installed qt5 on Raspbian. I'm trying to compile this package so I ranqmake && make. I get these errors: WARNING: TARGET is empty make: nothing to be done for 'first' Before having qt5 (and qt-creator), I can compile the code seamlessly…
FartVader
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