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 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 ...
0
votes
2answers
191 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 ...
4
votes
2answers
334 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
votes
1answer
1k 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: ...
0
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1answer
96 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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0answers
42 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 ...
1
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0answers
186 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 ...
2
votes
1answer
5k 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
votes
1answer
429 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 ...
1
vote
1answer
19k 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 ...
0
votes
1answer
836 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 ...
0
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1answer
192 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. ...
0
votes
1answer
337 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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votes
1answer
149 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 ...
0
votes
1answer
801 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 ...
0
votes
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 ...
3
votes
1answer
448 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 ...
1
vote
0answers
107 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, ...
1
vote
1answer
530 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 ...
5
votes
1answer
341 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): ...
0
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0answers
33 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 ...
0
votes
2answers
75 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
4k 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. ...
2
votes
0answers
228 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 ...
10
votes
1answer
425 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: ...
2
votes
4answers
123 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
votes
0answers
316 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 ...
0
votes
1answer
122 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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votes
1answer
6k 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. ...
1
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1answer
483 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 ...
0
votes
1answer
217 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 ...
0
votes
1answer
292 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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vote
0answers
21 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
1
vote
2answers
895 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 ...
7
votes
1answer
8k 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 ...
5
votes
1answer
5k 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 ..., ...
1
vote
1answer
563 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
votes
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 ...
0
votes
1answer
96 views

Qt Creator and UbuntuSDK

Please, help me! I'm install Ubuntu SDK with Qt Creator, how it was wrote here click But when I launch Qt Creator there aren't Ubuntu's projects (Projects > Ubuntu > Simple Touch UI)... only default ...
0
votes
1answer
155 views

Is it possible to install qt4 without installing qt4-doc?

I am compiling a software from source (bibletime 2.9.2) and among the requirements is Qt4.5+. I found a way to do that by installing all the required packages at a tutorial at ...
1
vote
2answers
309 views

Where are Tutorials and is it QML or QT

Hi there my question is that where can i find any good QML tutorials for Ubuntu phone app developing (I've seen the developer.ubuntu.com site but still thats not enough) and witch of the 2 languages ...
0
votes
1answer
669 views

Qt compatibility with GTK themes (Qbittorrent)?

How can I make my Qbittorrent look somewhat more like my GTK theme or just normal without switching/changing my current theme? As usual I tried something and this came out: How it looks without ...
4
votes
0answers
412 views

QtCreator creates unwanted windows [closed]

This issue occurs on raring with the build "qtcreator 2.8.1-0ubuntu1~raring1~test1", the latest from the software center. It works fine in general, but if you click on "Welcome" and than on "Develop", ...
2
votes
1answer
98 views

Does Ubuntu SDK include entire Qt toolchain?

Does the Ubuntu SDK include all of Qt, or only a subset? If I have existing (non-UI) components/libraries developed under Qt, can I use them in a Ubuntu/Unity/Ubuntu Touch application? Generally, ...
0
votes
1answer
114 views

Can someone help me port a gameboy emulator to ubuntu touch?

How can I translate a Qt (c++) gameboy emulator to a qml ubuntu touch emulator? Any suggestions would be much appreciated...
2
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0answers
603 views

Unix Signal handling in Qt Embedded Linux [closed]

I have an application for the USB interface in Qt (Embedded Linux). When a pen-drive is inserted, the kernel sends a signal for that and I want to recognize that signal and I want my Qt application ...
2
votes
2answers
356 views

How To Use i18n.tr in Ubuntu Touch Projects

I have been using i18n.tr for a while in my Ubuntu-Touch projects. I know what this function is about but I don't know how to add a translation to my project. Where do I have to place my translation ...
0
votes
1answer
90 views

Qt Creator reverted back to some previous version

I've had Qt Creator on my machine for quite a while, and after adding the necessary PPAs, I could use it for Ubuntu Touch, the Ubuntu SDK being installed and all. Yesterday, i noticed that Qt had been ...
-1
votes
1answer
381 views

Why some function definitions appears in italic font in qt creator?

I am using qt creator to work on open source and I am not able to understand some functions name are in italic fonts while declared it in it's class, whereas all other function are in normal font in ...