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Questions tagged [qt-creator]

Qt Creator is a cross-platform integrated development environment (IDE) using the Qt Framework. Questions about how to use the tool to develop your applications, installation issues.

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How to solve QT Make File 5 error

My OS is Ubuntu Desktop 18.04. QMake version 3.1 I'm using Qt version 5.9.5 in /usr/lib/aarch64-linux-gnu . When I build the project I get the qt Makefile 5 error. How can I solve this? makefile:248: ...
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2 answers
120 views

Install 20.04 system libraries in 21.10

I'm facing a weird problem. I develop Qt/C++ applications. Until yesterday my dev machine and the target ones were both running Ubuntu 20.04. Yesterday I had to upgrade my dev machine to 21.10 in ...
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1 answer
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Are Visual studio and VScodium softwares same?

I don't understand. Programmers says VS and VScodium. When i try to install VScodium, everything looks same as VS. Visual Studio (VS) community is freemium and the other part of enterprise software ...
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0 votes
1 answer
659 views

missing libm.so.6 and libstdc++.so.6

I have a program that I compiled through qt creator and appears to work fine on my computer but I'm trying to run it on a remote computer cluster and it spits out these error messages. ./programs/...
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2 votes
1 answer
561 views

install QT ubuntu OS raspberry pi

Hi is there anyone know how to install QT to ubuntu OS with raspberry pi 4. I try to install QT in Ubuntu 18.04 but there is error say '/lib64/ld-linux-x86-64.so.2': no such file or directory'. I ...
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'/lib64/ld-linux-x86-64.so.2': no such file or directory

Hello I have problem when i want to install qt creator in ubuntu using raspberry pi. the problem say '/lib64/ld-linux-x86-64.so.2': no such file or directory. can someone help me with this.
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  • 41
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1 answer
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Use startup application to run project file of QT creator

I am using Ubuntu 18 and want to run a project(created using QT Creator) when Ubuntu starts up. I have used startup application to add any program that will run when we start Ubuntu.But I don't know ...
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6 votes
3 answers
5k views

QtCreator not recognizing linked libraries after upgrading Ubuntu to 20.04

I've upgraded from Ubuntu 18.04 to 20.04 and besides some nasty grub issues most things worked out of the box. But my QtCreator (Qt Creator 4.11.0, Based on Qt 5.12.8 (GCC 9.3.0, 64 bit)) is facing ...
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4 votes
1 answer
478 views

How do I discover my current system encoding?

In QtCreator, they have something that looks like this: I changed the defualt encodring setting in an attempt to get my ide to display emojis, and now my system is really acting up. Including web ...
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1 vote
2 answers
818 views

How to install Qt-Creator 2.5.2 in Ubuntu?

I am using Ubuntu MATE. I have installed Qt Creator 3.5.1 on my system but I want to install Qt Creator version 2.5.2. How can I install it?
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1 answer
1k views

Qt Creator kept warning about "Cannot create file ... : Permission denied"

I'm on Ubuntu 16.04, and did a fresh install of qt creator. Using this command: $ ./qt-unified-linux-x64-3.1.1-online.run The Qt folder after installation is like: $ ll total 127000 drwxrwxrwx 8 ...
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1 answer
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Where is .deb file created after running the command sudo make install in qt 4.8 installation process in Ubuntu?

Please refer to this link How to install Qt version 4.8.1 in Kubuntu 14.04. I have run ./configure make sudo make install Where is .deb file created after run the command sudo make install in qt 4....
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  • 95
3 votes
1 answer
6k views

Cant find Qt5Designer, qt5svg and qt5x11extras

I'm trying to install KLatexFormula and it's cmake script is giving the error that it cant find the package config files Qt5DesignerConfig.cmake and qt5designer-config.cmake. Cmake asked me to add ...
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2 answers
681 views

After upgrading Qt, Ubuntu still uses the old version

On my Ubuntu machine, I have a version of Qt installed. This was installed a while ago, and I cannot remember how I installed it. But if I run apt list --installed from the command line, there are ...
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1 answer
5k views

Can't launch Qt Creator in Ubuntu 18.04

My environment initially had qt4 and Qt Creator seemed to work fine back then. I installed qt5 and after that Qt Creator does not launch anymore. Qt Creator works fine in my virtual machine however. ...
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5 votes
2 answers
4k views

No examples are shown in Welcome screen of qtcreator

So I installed qtcreator package on ubuntu 18.10. I found out that to get the examples, I also needed the qtbase5-examples and the qtbase5-doc-html package. But there are still no examples shown in ...
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Uninstall old Qt Creator, keep the new one

When I execute Qt Creator from the Unity dash (Ubuntu 16.04) I find 2 versions of Qt Creator (I installed both of them): Qt Creator 3.5.1 based on Qt 5.5.1 Qt creator (community) 4.7.1 based on Qt 5....
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  • 279
4 votes
1 answer
6k views

Font size in Qt Creator is too small

I am trying to install Java 9 on Ubuntu 18.04 as I heard it could work as a solution for super small font of Qt Creator. However, when I type in the terminal: sudo apt install openjdk-9-jdk I get ...
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2 answers
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Start using PyQt with Qt Creator

I would like to use PyQt with some Qt Creator. How many and which packages I have to install? $ sudo apt-get install qtcreator If I install just qtcreator, do I have to install also PyQt? $ sudo ...
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9 votes
3 answers
20k views

Gtk-Message: Failed to load module "overlay-scrollbar" Ubuntu 17.10

I run application in reinstalled Qt Creator 3.5.1 (opensource) Based on Qt 5.5.1 (GCC 4.9.1 20140922 (Red Hat 4.9.1-10), 32 bit) And the building is successful. But also there are warnings: Gtk-...
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1 answer
2k views

qtcreator says file not found in issues list

This problem seems annoyingly intermittent. Sometimes I'll build a project and all the errors in the issues list say "file not found". I've triple checked the file exists. The make command prints an ...
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0 answers
421 views

issues with two version of qtcreator?

I recently compiled qtcreator from the source files, but noticed i was missing some plugins, so I uninstalled by sudo make uninstall rm -rf qtcreator.dir qtcreator.tar I then later found a wizard ...
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6 votes
1 answer
4k views

PyQT Creator Qt designer: No such file or directory

There is a bash command that comes with installing PyQT Creator called designer that will run a tool called Qt Designer, found under the Qt Creator package. It helps you create GUIs - pretty cool ...
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418 views

Can't click OK to change qtcreator to use tabs for C++

In qtcreator's Tools -> Options -> Text Editor -> Behavior there's tabs and spaces settings. This doesn't affect C++. Instead, the coding style needs to be set in Tools -> Options -> C++ -> Coding ...
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1 vote
1 answer
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OpenCV imread() problem

I have installed OpenCV lately and I cannot use imread(). This is my code #include <opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp> #include <iostream> using ...
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1 answer
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building a pro in qtcreator gives "qtWidgets: No such file or directory"

I'm using Ubuntu 16.04. After installing qtcreator 3.5.1, opening and building a .pro file gives the following error: qtWidgets: No such file or directory
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2 votes
0 answers
48 views

What happens to the Ubuntu SDK spin of QtCreator now that Unity8 has dissolved?

What happens to the Ubuntu SDK spin of QtCreator now that Unity8 has dissolved? Is it going to continue development? Are its plugins still useful to Canonical such as for say, snap packaging? Are ...
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5 votes
1 answer
3k views

Qtcreator hangs and crashes

I have a big problem with Qtcreator I can't even write a code because it hangs/crashes whenever I bring up Qtcreator on ubuntu 16.04. I have Qt Creator 3.5.1 Based on Qt 5.5.1 (GCC 5.2.1 20151129, ...
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1 vote
1 answer
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unable to open QtCreator

I installed QtCreator 5.8 by download Qt.run file(Qt 5.8.0 for Linux 64-bit) from Qt offical site( http://www.qt.io/download-open-source/#section-2). I installed by command line(sudo ./qt.run)....
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1 vote
0 answers
276 views

Getting camera buffer using Qt with c++ and QML

I am new in Ubuntu touch apps development. my question is : is there a method to get a buffer or images from phone camera using C++. after that, i must process these images pixel per pixel and past ...
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1 vote
0 answers
718 views

error: cannot find -lQt5Multimedia

I copied a Qt project from my laptop running on ubuntu 14.04 LTS into Jetson TK1 running on 14.04.1 LTS. And when I try to build the project its showing the following errors: error: cannot find -...
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Writing code in c++ and it skips some

Sorry if the title was a little confusing. What I'm doing is creating a simple app to install certain programs in ubuntu. A friend wanted me to do this for him so he will have all of his apps in one ...
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2 votes
1 answer
1k views

Qt5 - how to use Free? Asking for money

I need to use Qt5 till i release my final version, my client wont pay until he see the whole application is stable and not having any issue. But Qt5 is asking money before even i get a client. In ...
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1 vote
0 answers
150 views

qtcreator 3.5.1: beautify on every safe

I have installed ClangFormat as beautifier for qtcreator, and it works via the hotkey in qtcreator, but I want it to beautify all code-files on every safe. According to http://doc.qt.io/qtcreator/...
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2 votes
2 answers
2k views

How to send commands to terminal and receive data from it?

Linux, Qt Creator. I ran this in a debugger: #include <stdio.h> char p[1000]; int main() { scanf("%s",p); return 0; } It works. However, no terminal appears when I double click the ...
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3 votes
2 answers
3k views

How to insert "tab" character in Qt Creator

In Qt Creator (3.0.1, Ubuntu 14.04.LTS), how do you insert a literal "tab" character (\t) (into a C source file) in the Text Editor? (Within a line, the Tab key inserts spaces as per your C++ ...
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  • 599
5 votes
4 answers
5k views

Qt Creator not working with VirtualBox 3D Acceleration

I am running vanilla 64-bit Ubuntu 14.04 LTS in latest VirtualBox (5.1.12) under Windows 7. I have VB's latest Guest Additions installed. I have switched VB's Display Enable 3D Acceleration on. I ...
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  • 599
4 votes
1 answer
3k views

Force OpenGL software rendering for specific programs

I am running Ubuntu 16.10 in Virtualbox (v5.1.10 latest) on a Windows 7 guest. All OS are x64. Since forever, Virtualbox has had the problem that enabled "3D HW acceleration" crashes some OPenGL ...
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3 votes
0 answers
1k views

Qtcreator freezes after few minutes of use

I just installed Qt 4.1.0 Based on Qt 5.7.0 (GCC 4.9.1 20140922 (Red Hat 4.9.1-10), 64 bit) And every time I run it after a few minutes of use it freezes. I have Ubuntu 16.04.1 LTS, on a laptop (...
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1 vote
2 answers
77 views

Ubuntu SDK and Qt Creator on same machine

Can Ubuntu SDK and Qt Creator coexist on the same Ubuntu machine without one affecting the other? Machine is running Ubuntu 16.04.1 AMD64.
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3 votes
1 answer
6k views

How to remove an old version of Qt and keeping the new one?

I have Ubuntu 16.04 installed on my PC (it has Qt Designer...etc preinstalled). Today I installed Qt5.5 using these instructions. When I open Qt Creator it detects two versions of Qt (Qt5.5 and Qt4....
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1 vote
0 answers
334 views

Problem at create a new target in qtcreator

At create the first project and create the target, give me the next error: Console: ricardo@zeus:~$ ubuntu-sdk file:///usr/ubuntu-sdk-ide/lib/Qt/qml/QtQuick/Controls/ToolBar.qml:143:9: QML Item: ...
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  • 105
0 votes
1 answer
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Qt creator 5.7 installation in ubuntu 14.04

I was using an old version of Qt creator, then I downloaded Qt-creator5.7 and installed manually in my home folder. I couldn’t find any executable with name qt/ qtcreator in the home/Qt5.7.0/5.7/...
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1 vote
1 answer
956 views

qt-creator will not install

I tried to install qt creator from both app grid, software-center, and gnome-software. All 3 yielded an error similar to this error: I expanded the "details" section and got this output: ...
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1 answer
577 views

QT Creator release build

So I was just wondering about this and I couldn't find a sure answer online and I need to be sure. I have some libraries in my project like OpenCV. And the question is: after I build the release ...
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0 votes
1 answer
800 views

QtCreator crash upon editing

I am using Ubuntu 16.04 on a laptop Dell XPS 15 9550. Current kernel is 4.4.0-34. Display resolution is 3840x2160. I am using nvidia prime and currently the nvidia driver 370, but I select "Intel" in ...
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  • 403
1 vote
1 answer
467 views

How to add binary third party libraries in qt creator (Ubuntu-sdk verison of QT-Creator)

I try to write an app for ubuntu unity8 and i use a third party library in that app. My problem is that i would like to use the binary version of that library in my app and not the source files of ...
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2 votes
1 answer
653 views

How to install QtRuby + Qt4 on Ubuntu 14?

I wish to program in ruby in QtCreator. If I'm right, I need to install QtRuby + Qt4, but with no success on Ubuntu 14. How to do? Thanks!
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0 votes
1 answer
85 views

Ubuntu SDK unable to play scope

I've just created a Unity Scope project in Ubuntu SDK. However I'm not able to run it, If I target the Desktop, I have the following error : Starting /usr/ubuntu-sdk-ide/share/qtcreator/ubuntu/...
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1 vote
0 answers
35 views

Will Ubuntu-SDK as module for other frameworks

I use CLion. For me (and for most people, I suppose) QT Creator is not good choice for working. Will it be possible in the future to install Ubuntu-SDK to other programs (for example CLion)? Because ...
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