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 do I fix X problem to invoke Cadence IC6.10 in Ubuntu 13.10

I installed Cadence IC6.10 in my Ubuntu 13.10. When I tried to invoke the Cadence, I got the following error message: ============================================================= Qt Warning: X ...
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1answer
122 views

Problem installing QtOctave

First I installed MATLAB and I got stuck here: No MATLAB executables were found in the directories you specified. This package requires at least one local installation of MATLAB. I was unable to ...
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2answers
236 views

What's the best way to make a Qt executable program run as a service in Ubuntu

I've written my Qt code for an embedded system which is running on Ubuntu. I want to run my program as a service in Ubuntu so I can stop or start it using monit. I've seen some people creating a new ...
2
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1answer
2k views

Qt5 installation and path configuration

I have installed Qt5 from the Qt5 project site, to the following directory /opt/Qt5 I would also like to mention that I had Qt4 installed previously, I have removed all instances of Qt4 through ...
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1answer
46 views

How to set a default file manager for qt's app?

I am running on ubuntu with awesomeWM which does not have specific file manager. When I launch vlc or any other Qt app and try to open a file from there, it does segfault after the following error ...
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115 views

Cant install unixodbc-gui-qt_2.3.0 on Ubuntu 13.10, complains “cannot find Qt!”

I am on Ubuntu 13.10 and I am attempting to install UnixODBC GUI, the instructions look straight forward. When I run ./configure I get an err "configure: error: cannot find Qt!". I have installed ...
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2answers
503 views

Appmenu with QML App

I'm developing an Ubuntu SDK meant to be used on both the desktop and touch interfaces. Obviously the menu that slides up from the bottom of the window is not a great interface for the desktop. ...
3
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1answer
3k views

how to install both qt5-qmake and qt4-qmake

There is no qt5-qmake on default LTS 12.04 repository so I am using ppa from ubuntu-sdk-team ppa:ubuntu-sdk-team/ppa However since this or previous month, it stopped working to me. Now when I try to ...
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2answers
137 views

Compile Qt3-program on KDE4

I want to compile a program (KTIGCC), but it is intended to be used on KDE3, using Qt3 libs. Is there any possibility of compiling and using this program in my current KDE4? Trying to run ./configure ...
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1answer
274 views

How to detect events like lock/unlock screen, enter/return suspend and monitor power off

I am wondering if there is any way to detect system wide events under linux such as: user un/locked session user logs in/out machine sent to suspend screensaver goes on and the monitor switches off ...
4
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1answer
971 views

QT theme in Clementine in 13.10

I have a strange problem with QT theme in Clementine. When it is run from sound menu (notification area), it has Windows classic theme: When it is run from terminal or Ubuntu menu, it looks OK: ...
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155 views

qDebug() output is not visible on a terminal

I use UBuntu 12.04 LTS. When I run a console application using Qt Creator an output of qDebug() is not visible on a terminal (I get only an empty terminal with a cursor). How to fix that ?
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84 views

Missing package in Ubuntu SDK - qtdeclarative5-ubuntu-webapps-api

Installing the Ubuntu SDK failed because of missing package qtdeclarative5-ubuntu-webapps-api this was the message from apt-get: The following packages have unmet dependencies: ubuntu-html5-sdk ...
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40 views

QT 4 update, removing lots of libs

I get a message from Muon update module aksing to update QT 4. Thats fine, but it also want to remove LOTS of libs and programs (incl spotify, ksystemlog, krdc, krfb, kdepim-runtim, userconfig and ...
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148 views

Error installing Qt4 on Ubuntu 11.10 ARM [closed]

I'm working on a Nitrogren6x ARM platform. They provide an image based on Ubunu 11.10. This works like expected and I don't want to upgrade to some newer Ubuntu version. We are trying to run some Qt4 ...
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1answer
3k views

how to write characters to serial port

I have an ancient serial spectrometer which only runs on win9x. I want to convert to a Linux system, but the existing software is proprietary and wont work. I was able to access a console internally ...
2
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1answer
293 views

How do I add a qrc file to my Ubuntu Touch qml project?

My UT QML project makes use of a set of images, and I was planning use them via "qrc:///pathtoimages/myimage.png" style of url. In Ubuntu SDK, I can "add new... Qt / Qt Resource File". The file is ...
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1answer
15k views

Ubuntu 12.04 LTS - installing Qt 4.8.5 and Qt Creator

I found the official guide about how to install Qt 4.8.5 on Ubuntu 12.04 But that approach requires building Qt SDK (which may take some time) and setting everything manually. Moreover I need also ...
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1answer
554 views

How to install QtMultimedia source?

I need QtMultimedia to compile an open-source project. But it wasn't installed with qt. I've tried sudo apt-get build-dep qtmultimedia5-dev But it doesn't find such a package. I've downloaded it ...
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1answer
153 views

Package ubuntuone-control-panel-qt isn't available

Just installed Ubuntu 12.04LTS 64bit and I'm setting up Ubuntu One, but it wouldn’t let me. Package ubuntuone-control-panel-qt isn't available There isn't even any more available information. ...
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1answer
233 views

Autokey (autokey-qt) freezes and won't insert text

Per some suggestions on here and lifehacker, I began using autokey. It worked great for a week, but as of today it now hangs when I try to enter name new phrases. usually won't close when I push ...
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1answer
142 views

64bit packages being removed when installing Skype/Teamviewer

I am on Ubuntu 12.10 and when I try to install skype I get the expected message about missing dependencies and when i run sudo apt-get install -f I get this The following extra packages will be ...
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45 views

Why does Qt Creator automatically exit randomly after about 5 minutes?

I’m running Ubuntu 13.10 and have upgraded Qt4 to Qt5. While using Qt Creator 2.7 I’m facing two problems at this time. When I run Qt it only stays open for about five minutes or so. Also when you ...
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1answer
781 views

no menu in dogecoin-qt wallet client

As you can see, there is no menu on the top menu bar. It says "Dogecoin - Wallet" but there are no "File", "Settings", or "Help" menu titles. Clicking on the word "Dogecoin" in the menu bar or on the ...
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1answer
5k views

dogecoin wallet client dependencies (boost)

I seem to be missing something boost related. Dogecoin gives the requirements as: qt4-qmake libqt4-dev build-essential libboost-dev libboost-system-dev libboost-filesystem-dev ...
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1answer
354 views

How to start dconf and gconf in a non-Gnome environment?

I am running Openbox without any DE. And I also use some Qt apps such as VLC, Virtualbox and Skype. However, they require some gconf / dconf settings to be set. For instance to set the correct icon ...
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80 views

Is signal handling in QtQuick asynchronous? [closed]

I have the following QML document: Item { id: item MouseArea { onClicked: { /* emit signal */ item.someSignal(); } } ... } When I click the item, ...
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1answer
438 views

Qt QML modules, how to import them and know what to import & QtMultimediaKit 1.0

In the last question, (How to insert Video element in my Ubuntu application?) I thought that I could create the Video element with the QtMultimediaKit1 . But I tried to import QtMultimediaKit 1.0 and ...
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1answer
270 views

How to insert Video element in my Ubuntu application?

I saw on some sites that you can insert videos with the Video element by importing Qt 4.7 and QtMultimediaKit 1.1 . But I have an error by compiling the project (it's a tabbed touch UI project): ...
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32 views

QML Ubuntu SDK : How to insert Video element [duplicate]

Hello everybody! I am learning Qml and using the Ubuntu SDK tool in addition to QML elements. I saw on some sites that you can insert videos with the Video element by importing Qt 4.7 and ...
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0answers
57 views

Way to catch shutdown event in Unity, Ubuntu 13.04

I'm developing gui application (C++/Qt) and now search for correct(documented) termination way for application. Is there any documentation how Unity DE notifies gui applications to exit (some analog ...
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2answers
69 views

qml file and app.js not found

I am a newbie in ubuntu app development. I am going through the tutorials in developer.ubuntu.com. The thing is when I created a sample ubuntu-htmui project, no .qml file is being created as explained ...
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2answers
3k views

Can't start ubuntu 12.04 in GUI

After entering sudo apt-get install libqt4-dev intltool a lot of important stuff deleted automaticly. No graphic interface available anymore! Need help! I use hotot as twitter UI on my desktop. ...
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0answers
192 views

Puzzle Game QML GridView Animation Problems

I've been working on a puzzle game for Ubuntu Touch and I'm facing some issues with animations. The problem seems to occurs when GridView animations (add, move, remove...) play too fast. Something ...
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297 views

Howto create a new C++ based Ubuntu touch project in Ubuntu SDK?

There is no option to start a C++ and QML based project in Ubuntu SDK. It only offers to create a QML project with no C++ codes. If I try to add C++ classes to the QML project, I get this error: ...
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4answers
119 views

How can I build and install a Qt project/.pro?

I would like to install sqlite database browser from sourceforge. I downloaded the file and unzipped it with tar -xvf sqlitebrowser_200_b1_src.tar.gz Now it's a directory in my downloads with this ...
2
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0answers
257 views

After compiling QT 5 how do I to update my system? With update-alternatives?

I'm on Ubuntu 12.04. I followed the instructions in this guide in order to compile QT5. Everything compiled fine. My problem now is that my QT related programs are still pointing to an older ...
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1answer
116 views

Backporting Qt 4.8.4: Circular dependencies of qtchooser

I'm trying to backport the latest Qt packages (4.8.4) to Precise, using Launchpad. This worked well for the qt4-x11 packages but now I also need qtchooser which does not exist in 12.04. Trying to ...
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1answer
4k views

Qt (headers and libraries) not found

I'm trying to install a program and i used the following command: ./configure But, an error occurred: checking for Qt... configure: error: Qt (>= Qt 3.2) (headers and libraries) not found. ...
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77 views

Setup compilation with Qt, Boost and muParser

I am a new comer on the Ubuntu worldwide and I have to complete a project. I have developed a plugin for LibreCAD with Windows. I am now working with Ubuntu 13.10 and I would like to compile LibreCAD ...
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1answer
398 views

QtCreator crashes on registering namespace

I just installed Ubuntu 13.10 (Desktop) x64 on my computer and wanted to install Qt5 with QtCreator. So, I downloaded it from: http://qt-project.org/downloads ...
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1answer
158 views

Error while compiling Qt with Phonon

I have this problem. I have a code line: [ **QT += declarative network phonon** ] Which says: [ ***:-1: error: Unknown module(s) in QT: phonon*** ] after compiling. I have tried to ...
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1answer
224 views

Qt4 files : file or directory not found

I installed qt4 and now can see its files in /usr/include/qt4 But when I am compiling the "C" code, it gave error that QWidget: file or directory not found Although this QWidget is present in ...
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0answers
19 views

How to add default icon in Qt widget application [duplicate]

I am trying to develop a simple qt app, I would like icon for the toolbar buttons, How can I standard icons for these toolbar buttons, new,open,close etc
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2answers
487 views

How to put MainView into maximized

[using ubuntu sdk to write an application for the desktop] Is there a way to change the window state of the MainView? MainView { ... width: units.gu(100) height: units.gu(75) Page ...
4
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1answer
5k views

What package do I need to build a Qt 5 & CMake application?

I'm trying to build sdrangelove, which wants Qt 5 and uses CMake for its build system, on Ubuntu 13.10. What package do I need to install to give it the file it's asking for here? There are a lot of ...
4
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1answer
3k views

How to upgrade QT Creator?

I just installed QT Creator 2.4.1 (Based on QT 4.8.0 64bit) from Ubuntu Software Center and noticed that it was not the latest version. How do I upgrade it from terminal? My Ubuntu is 12.0.4LTS. ...
3
votes
1answer
2k views

Cannot mix incompatible Qt library (version 0x40804) with this library (version 0x40801) Aborted core dumped

... Cannot mix incompatible Qt library (version 0x40804) with this library (version 0x40801) Aborted core dumped The Problem occurs with 64-Bit Ubuntu 13.04 when starting k3b, ebook-viewer ..., ...
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1answer
551 views

13.10 qtcreateor 271 wont work

Just installed ubuntu 13.10 x86 with all updates. I then installed qt4 libraries and qt creator 271: sudo apt-get install build-essentials sudo apt-get install libqt4-dev sudi apt-get install ...
6
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1answer
2k views

Are Qt Quick Controls available on Ubuntu 13.10?

I was looking to do UI development in QML, and I really want it to look native. I found the QtQuick.Controls (http://qt-project.org/doc/qt-5.1/qtquickcontrols/qtquickcontrols-index.html), but when I ...