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

learn more… | top users | synonyms

1
vote
0answers
65 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
340 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 ...
0
votes
0answers
36 views

Which files should I look at when changing Ubiquity?

I've been thinking about changing the Qt version of Ubiquity to make it easier to use ("easier" in this case meaning not to bring the user to a partition manager when choosing a dual boot option). ...
5
votes
1answer
198 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
votes
0answers
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 ...
1
vote
0answers
49 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 ...
0
votes
2answers
64 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 ...
1
vote
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. ...
2
votes
0answers
167 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 ...
2
votes
0answers
246 views

Develop in C/C++ for Qt Ubuntu Touch projects

as said in the question I want to develop the code in C or C++ for my Ubuntu apps. I don't feel confortable in Javascript at all, and when I try to create a C or C++ file the IDE returns me Failed ...
0
votes
0answers
385 views

Looking for a GUI for Postfix/Dovecot

Ok, to be clear, I am not interested in web based GUIs. What I'm making is something similar to the server administrator on Windows, which is just a sort of control panel with the ability to install ...
2
votes
4answers
104 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
226 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
107 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 ...
0
votes
0answers
3k 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
vote
0answers
67 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 ...
1
vote
1answer
333 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
0answers
103 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
169 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 ...
1
vote
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
0
votes
0answers
88 views

Qt MySQL driver

I installed Qt 5.1.1 using .run file and I couldn't connect to a mysql database (even though QSqlDatabase::drivers() showed it as an available). I found out that I needed to recompile the mysql ...
1
vote
2answers
277 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 ...
3
votes
1answer
4k 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 ...
2
votes
1answer
2k 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
1k 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
533 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 ...
0
votes
0answers
172 views

QtCreator install not recognized

I've installed QtCreator 5.1.1 according to this site Install Qt-5 and everything is working well with it. I installed it /opt/QT5. Unfortunately, Muon software center does not list QtCreator in its ...
5
votes
1answer
1k 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
82 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
113 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
220 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
308 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
380 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", ...
0
votes
0answers
45 views

how to create a media player with a list of .mp3 files in qt

Hello everyone i am new to qt-sdk . I want to create a media player with a list of .mp3 files. Pls help me with some good tutorials in creating one.
2
votes
1answer
85 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
96 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
votes
0answers
342 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
245 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
80 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
219 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 ...
0
votes
0answers
221 views

unable to install python-qt4

I am trying to install python-qt4 I am getting following errors in Ubuntu 12.04 user@ubuntu:~$ sudo aptitude install python-qt4 [sudo] password for user: The following NEW packages will be ...
0
votes
0answers
39 views

Some QLabel are not getting translated when app is run in other language ?

I am running kde app kstars on my kubuntu 13.04 system from terminal using following command KDE_LANG=fr ./kstars Some labels file from http://paste.kde.org/p6e42cd0d/ are not getting translated ...
0
votes
0answers
176 views

Installed Qt as sudo su, unable to launch IDE

I installed Qt 5.1 by the following commands in Ubuntu 12.04.3 sudo su cd /QtSdk--linux-.run chmod +x QtSdk--linux-.run chown root:root QtSdk--linux-.run ./QtSdk--linux-.run After installation, the ...
0
votes
2answers
2k views

Ubuntu, installing Qt 5.1.1

I just installed windows 8, Ubuntu twice because it failed the first time somehow (couldn't start from grub). However, now everything works fine. The only exception is that I cannot install Qt ...
0
votes
2answers
898 views

QT code for U Touch returns `qmlscene: cannot find qt installation of ''`

I'm trying to start developing for Ubuntu and Ubuntu phone, but I get an error: qmlscene: cannot find qt installation of '' when I attempt to run my application in Ubuntu from the command line. I'm ...
1
vote
0answers
90 views

Add custom button with Gtk or Qt on ubuntu login screen

i'm currently working on custom ubuntu distro for local use only. I need to create a custom button on ubuntu login screen. I don't know where to start, how to edit ubuntu login screen? the button, for ...
9
votes
1answer
672 views

What does the takeover of Nokia mean for the Ubuntu SDK?

Well, the title says it all: What does the takeover of Nokia by Microsoft mean for the Ubuntu SDK, as the Ubuntu SDK relies on Qt which is (was?) a Nokia project?
2
votes
0answers
427 views

Qt 5.1.1 installation problem

I am new to ubuntu and using 12.04 LTS. I tried to install Qt5.1.1 without software manager. I downloaded the qt-linux-opensource-5.1.1-x86-offline.run file and ran it. It ran smoothly and got a ...
2
votes
2answers
2k views

Can I sell my PyQt4-app without having a PyQt license?

I would like to sell a Python application that uses PyQt4. The commercial licenses for Qt PyQt cost thousands of Euros together. Do I need to buy a commercial license? Consider this from a ...
1
vote
0answers
54 views

Behavior on listView

I need to scroll an element of a ListView to bottom when user clicks on it, with an animation. I want to use Behavior for the animation, but I do something wrong. I have no problem with the scroll ...