Qt is an application framework originally created by Trolltech and currently managed by Digia. The KDE desktop uses the Qt framework for its applications.

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How can I create charm on one node

Firstly I generation nodejs file on the node without charm then my boss said we need charm for generation. I need in this charm QT5, NODEjs, Berkeley db, g++ with gcc but I don't know how create ...
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15 views

QT Licensing - Commercial & Open Source [on hold]

for embedded development, is it necessary to purchase QT commercial license or the open source version is good enough?
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2answers
3k views

How to install libqt4-core and libqt4-gui on ubuntu 16.04

Upgrade to 16.04. But the libqt4-core and libqt4-gui packages are missing. How could I install them on 16.04? Thanks.
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3answers
5k views

QML: Simplest way to write to a text file?

QML at the moment lacks basic system commands, so I am looking for the most simple template to write to /tmp/text.txt.
2
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1answer
177 views

Unity launcher, dash and menu fonts are not anti-aliased

I am running Ubuntu 14.04. After installing Qt4 settings manager and tinkering with it (changing the font face for Qt apps) I notice that unity launcher, dash and menu and date indicator fonts are not ...
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0answers
29 views

Installing Qt 4.8.6 instead of the Qt5

I am developing a project wrote from 4 years using qt4.8.6 but the default qt version now is qt5.. How to add qt4 to Qtcreator configuration kit be able to compile and run normally ?? I'm using ...
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0answers
10 views

How to install Qt designer for pyside development if you already have Ubuntu sdk?

I have ubuntu sdk installed on my machine. I'm interested in exploring pyside. Some of the pyside tutorials tell us to use Qt designer (I would like to). And I know it can run outside the Ubuntu SDK. ...
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0answers
36 views

QT unmet dependencies for smplayer

I was trying to upgrade smplayer, but aptitude tells that it's unable to solve the dependencies for libqt5script5 $>sudo aptitude dist-upgrade The following NEW packages will be installed: ...
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26 views

Change qmake address ubuntu 14.04

I had installed the 32bit version of Qt but because it didn't work well (my system is 64bit), I uninstalled it using MaintenanceTool and installed the 64bit version. But now, when I run which qmake ...
2
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1answer
4k views

Recent Qt repository

Is there any repository for latest Qt versions (recent version is 5.0.1 while ubuntu has 4.8) ? PS I found this PPA but it tagged as [deprecated]!!!, so I'm wondering what if there is official one ...
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3answers
84k views

How can I install Qt 5.x on 12.04 LTS?

If you want to develop with QML 2.0 and Qt5, the base packages don't seem to exist in repository for 12.04. What PPA should I add? Is it a binary installer? a compile the toolkit yourself? Those ...
4
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1answer
8k views

How to install Litecoin

I'm trying to install litecoin on my ubuntu 12.04 machine. I downloaded the Litecoin-Qt from http://litecoin.org/ and extracted it to ~/ Then based on the README, I did the following: ...
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How can I keep bookmarks synchronised between Qt and GTK applications?

Does anyone know a solution to keeping the same bookmarks (red rectangle in the screenshots) between Qt-based and GTK-based applications? Qt-based applications: GTK-based applications:
3
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1answer
186 views

Unable to access i18n in QML app's JS file

I'm having trouble importing the i18n library included in Ubuntu.Components 0.1 for use in a JS file. I initially ran into my question/problem while hacking on the 'Clock' Ubuntu Touch core app, but ...
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2answers
505 views

How to enable global application menu in RStudio?

On Ubuntu 15.04 Unity, how can I enable the global menu bar for the Qt application RStudio? I found a 12.04 question, which was not solved and did not contain a clue. (Due to reputation issues, I ...
0
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1answer
99 views

Running QML/C++ application build with CMake is unable to run from QtCreator or snap package

I am trying to get a QML/C++ application packaged as a snap. I am using CMake as a build system. The application builds fine and I am able to run the executable by double clicking on it. When trying ...
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0answers
57 views

Qt5 on Ubuntu 16.04 [duplicate]

I have followed this https://wiki.qt.io/Install_Qt_5_on_Ubuntu But when I try qmake --version qmake: could not exec '/usr/lib/x86_64-linux-gnu/qt4/bin/qmake': No such file or directory I usr/...
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0answers
41 views

Ubuntu Touch Development - first steps in cross-compiling and installing?

I have a bit of home-built C++ code using Qt that I run on my Ubuntu Desktop, and I've been fooling around with the Aquaris M10 tablet running Ubuntu Touch for a while... I got to thinking, I'd really ...
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0answers
53 views

How can i build an ubuntu touch app only in c++ (without qml) and with cmake

is there a way to configure a cmake file for building a click-package without qml. i like to start programming in the main function with QApplication and only my own window class. my goal is to write ...
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1answer
41 views

Develop a Snap package for project using SDL2

I am currently developing an application that uses joystick input and generates different wave sounds using SDL. While the implementation works without any issues, once I package my application using ...
1
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0answers
599 views

Unity desktop on Raspberry Pi 2

The first thing needed to make it work is a driver. There was a Mesa and DRM driver for Broadcom VC4 developed recently by Eric Anholt. It's an OpenGL driver. http://dri.freedesktop.org/wiki/VC4/ ...
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0answers
36 views

Can't figure out Cmake [closed]

I don't have much experience with Cmake and setting environment variables/paramaters, mainly because I've never needed to, things usually compile themselves. I'm trying to install heimdall. And i'm ...
2
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1answer
133 views

Ubuntu SDK : Having difficulty getting images to work in 'QML only app' when deploying to armhf device

When I deploy my QML only program to the desktop using the Ubuntu SDK, images that I have placed in the same folder as 'Main.qml' can be accessed and displayed correctly in the application using ...
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0answers
30 views

QtCreator error with qtversion Ubuntu 16.04 [duplicate]

i installed QtCreator in Ubuntu 16.04 with: sudo apt-get install qtcreator Then is opened qtcreator to start a project but i have this error: qtcreator error Ididnt installed anything related to ...
16
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1answer
493 views

How to change index in OptionSelector immediately (without animation)?

In my app, I use an OptionSelector to choose from a list of bike stations. I also have a map component with placemarkers for each station. When I tap a placemarker, it also changes the OptionSelector ...
7
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2answers
629 views

What is the default icon set in Ubuntu 16.04?

I would like my Qt configuration to match the default Ubuntu 16.04 style. What is the default icon set from the below list of icon sets?
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0answers
21 views

Ubuntu SDK with existing Qt installation

I have an existing Qt installation and I want to try Ubuntu SDK. I was wondering if there is a repository which can be added into the Qt Maintenance tool and install the Ubuntu SDK from there so I can ...
26
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3answers
34k views

What's the development package for Qt5 in 14.04

I want to build a Qt5 example on my desktop machine. I installed qt5-default and qtdeclarative5-dev, but I'm still getting this error: Project ERROR: Unknown module(s) in QT: quick qml Which ...
0
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1answer
37 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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0answers
19 views

KDE Framework 5 qtcurve window background transparency

I am running Ubuntu 16.04 with KDE framework 5 on a machine with an AMD gpu and the open source drivers. In KDE, I've tried using qtcurve but I can't seem to change window background transparency-- I ...
0
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1answer
207 views

How to get an uniform look for Qt and GTK applications in xenial

Since I upgraded to xenial all the applications but the ones using Qt4 look uniform. For some reason the Qt4 applications like SpeedCrunch or Okular use the Plastique theme by default. The Plastique ...
5
votes
1answer
8k views

How to install PyQt for Python 3 in Ubuntu 14.10?

I found some tutorials online for earlier versions of Ubuntu but they didn't seem to work on Ubuntu 14.10; either that or I was doing it the wrong way. I want to use Qt Designer to design a GUI, use ...
0
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1answer
128 views

QtCore not found

I have problem regarding installation - when I want to compile KeePassX with cmake there is error with QtCore. I tried installing libqtcore, I got E: Unable to locate package libqt4-core Output of ...
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2answers
73 views

Qt5 apps won't open on one computer

There is a Qt5 app (Musescore), that I am trying to get to work on my second Ubuntu computer. On my main computer (Lubuntu 16.04), Musescore works fine, but on my second computer (also Lubuntu 16.04),...
1
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1answer
33 views

How to add qt qmake version 4.8 to qt creator?

I have Qt creator 5.4.1.I have qmake 5.4.1 but I wan to add qmake 4.8 for desktop version.How could I do? I install gcc4.8,but I don't know Is qmake install?(if it installed so where was it?) root@...
14
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5answers
11k views

make qt programs look good under XFCE?

I use xfce. My problem is - some programs look nice and some sort of ugly. AFAIK this is because XFCE is gtk and most programs use gtk theme, but some programs use qt and thus don't use gtk themes (...
15
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4answers
7k views

How can I theme my Qt app to resemble one written in Gtk?

Mark Shuttleworth recently blogged about the decision to include the Qt libraries in the 11.10 release, with a followup from Jono Bacon. The thing that puts me off Qt apps is that they don't blend in ...
3
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1answer
170 views

How can I store the value a user enters in a variable?

How can I store the value a user enters in a variable? For example I have this code: TextField {width: 37; height: 19 var id: q1 ...
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2answers
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What is KDE, GTK, GTK+, QT, and/or GNOME?

I'm new to Ubuntu (and Linux in general). Sometimes when looking at programs in the Ubuntu Software Center, I see things about the programs being 'for the GTK+ environment', or 'for GNOME', or a ...
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3answers
7k views

How to install libQtGui.so.4 32bit on 64bit ubuntu

I am trying to compile the android tree on Ubuntu 64bit 12.04; The build fails on an error of missing shared library libQtGui.so.4; Check /usr/ lib files i found that: /usr/lib/ or /usr/lib32 doesn't ...
1
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4answers
8k views

Debug Qt application on ubuntu with root permission using qt creator

It is possible to run my application with root priviliges using sudo, like this: sudo ./MyApp Is it possible to debug my Qt application using root priviliges using QtCreator? How can I do this on ...
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0answers
58 views

Ubuntu GNOME and high resolution screen: icons in QT apps are too small. How to solve?

my brother got a new laptop, a Thinkpad X1 Carbon 4th generation. It features a screen with a rather large resolution of 2560x1440 px. Out of the box, GNOME scales well the size of the text and the ...
2
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1answer
4k views

Installing Qt 5.5.1 on Ubuntu 14.04 - throws qt.network.ssl error on terminal

I am planning to install qt 5.5.1 on my ubuntu 14.04 running on virtual machine. I have downloaded the installer from qt-io and when I try to install the setup, I notice the below warning on my ...
2
votes
3answers
12k views

“Failed to load platform plugin ”xcb“ ” while launching qt5 app on linux without qt installed

I wrote application for linux which uses QT5. But when I am trying to launch it on the linux without QT SDK installed, the output in console is: Failed to load platform plugin "xcb". Available ...
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0answers
48 views

How do I enable global menu for RStudio in 16.04?

I tried the solutions mentioned in this question but neither worked. RStudio version 0.99.896 on Ubuntu 16.04.
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1answer
84 views

How to update Qt from 5.2.1 to > 5.5

I am trying to install an application that requires qt 5.5 or higher. I think that I have just about downloaded the Internet, and still it shows 5.2.1. andrew@andrew-Aspire-E5-574:/usr/lib/x86_64-...
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How to integrate Qt software like FocusWriter, Telegram, Toggl Desktop or RStudio?

What is required to integrate Qt applications such as FocusWriter, RStudio, Toggl Desktop or Telegram Desktop into the design of Ubuntu? By default, these applications look as follows on Ubuntu 16.04:...
0
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1answer
41 views

How to check Qt is working or not

I installed Qt version 4.8.5 in my ubuntu machine and how can i test a sample program. Can anyone provide me a sample .pro file and .cpp file ? or the sample of needful files to test Qt ?
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1answer
226 views

How to install Qt 5.x 32 bit on 64 bit ubuntu/debian?

How to install Qt 32 bit and correctly build an application on 64 bit ubuntu/debian? Are there i686 or 32 bit packages like in SUSE? Which repositories?
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1answer
96 views

How to install Qt verion 4.8.1

How can i install Qt version 4.8.1 in Kubuntu 14.04 ? I cannot find the version 4.8.1 in the official Qt site's downloads list. Kindly help me to install the exact version. Thanks