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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Change tab from code using ubuntu SDK

How to change tab using code in QML in Ubuntu SDK? The answer is: If tabs are defined as follows: Tabs { id: tabs ..... } then using this: tabs.selectedTabIndex = 0 will get ...
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Application submission issue

I've created a small app for the Ubuntu Software Store and submitted for approval. It was working fine on my desktop and made it using Qt Creator. But now I received the following feedback from the ...
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2answers
309 views

Qt5 with Qt 4.7 on Ubuntu 13.04. How to install it both without conflicts?

I'm using Qt5 and need Qt 4.7 now (for embedded device). Is it possible to install it additionally on Ubuntu 13.04?
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1answer
1k views

QtQuick not found (Lubuntu)

On a fresh Lubuntu 13.04 installation, I installed Qt5 from the official ubuntu repositories. But this installation of Qt5 can't find the QtQuick module. What am I missing? qmlscene test.qml ...
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1answer
80 views

Unity 2d for Qt [closed]

I Need the source packages of Unity 2d to rebuild and run on Qt , the problem is that I'm using Qt on windows right now. and I have no idea how download the Unity 2d on windows 7.
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1answer
1k views

build a project with qmake-qt4

I'm new user of Ubuntu, so excuse me if my question is very obvious. I have a 32-bit Ubuntu 11.10 installed in VirtualBox, and I want to build a project using qmake-qt4, the problem is that I don't ...
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Amarok doesn't start after qt4-related ubuntu updates (from raring-updates)

Last Monday I updated my Ubuntu 13.04 and there were a bunch of qt4 related updates. (I don't know how to have a list of the updated packages which isn't taking a screenshot of Ubuntu Software Center ...
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0answers
160 views

Recompile Qt Creator with Qt4

Qt Creator on Ubuntu 13.04 has the cursor theme wrong. I've read this is because Qt5 applications do not integrate in Ubuntu well. So I want to recompile Qt Creator using Qt4. I've downloaded the ...
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1answer
457 views

Compiling software generated with an old version of Qt Designer

I'm trying to compile and install K3dsurf following the instructions in the "Readme", which says: tar -xvzf k3dsurf-0.6.2.tar.gz; cd k3dsurf; qmake; make; ./bin/k3dsurf & ; The problem is that ...
2
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1answer
774 views

Problem with QtCreator after update

I installed the ubuntu-sdk 2 days back on my machine (12.04) and the Qt version that is installed is 5.0.2. Everything was working perfectly, but today there were some updates from the ...
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1answer
54 views

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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How to install SIP+PyQt with apt-get + pip + virtualenv?

[I originally posted this question, under a different title, in StackOverflow (here), but later I realized that my problem is very specific to apt-get, hence I am re-posting it here. Sorry for the ...
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1k 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
609 views

Setting Qt5 qmake as default Qt builder

By default Qt4 is the default Qt builder in ubuntu 12.10, I want to know how can I make Qt5 qmake as default Qt builder. PS Qt5 qmake installed in /usr/lib/x86_64-linux-gnu/qt5/bin/qmake
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1answer
111 views

How to minimize PyBitmessage to the system tray?

I recently installed PyBitMessage, and now I can't get it to minimize to the system tray. If I click the red X, it just exits (unlike Transmission, which can be configured to "survive" being closed - ...
3
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1answer
344 views

Does Ubuntu Phone APIs include Qt Mobility?

I'm currently developping an application for Meego/Harmattan. This app uses Qt Mobility API, and can easily be ported to SailfishOS. I would like to know if this API is also supported in Ubuntu Phone ...
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2answers
1k views

How to pass the image preview from the QML Camera component to a C++ plugin

I'm writing an Ubuntu Touch QML app that captures and processes images from a camera device. The processing is done by a C++ plugin to which I'm passing the URL of the image. I can successfully save ...
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1answer
1k views

How to emit onDropped in QML drag n drop example?

In the qml documentation there is a drag'n'drop example: import QtQuick 2.0 Item { width: 200; height: 200 DropArea { x: 75; y: 75 width: 50; height: 50 onDropped: ...
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1answer
126 views

How to add Password encryption

I have an encryption app that just encrypts a string and then can decrypt also.. But how can I make it so the user sets a password and the other person has to put in that password to decrypt the ...
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133 views

Compose Key combinations are wrong in KDE/QT apps

On Kubuntu 12.04 LTS. For some reason, Qt applications (Kate, Konsole, etc.) were loading the ISO8859-1 Compose key file, instead of UTF-8. Other applications (Chrome and Java apps, for example) were ...
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3answers
272 views

How to open a crontab file in c++

I am working on a QT application which makes the usage of crontab easier with GUI. But I am facing the trouble of including the jobs in the crontab file from my application . So how do i open a ...
2
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1answer
4k views

Missing libqt3-mt in 13.04

I have an application that requires the libqt3-mt package, in particular it's asking for libqt-mt.so.3. It worked OK under Ubuntu 12.04, but I've recently upgraded to 13.04 and the package is missing ...
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1answer
508 views

i want to open a file in the root directory in my c++ application in write mode.

I have a file in the root directory which I want to open for editing in my QT application. Generally we use "sudo (editor) filepath" to open the file with roots permissions. But i want to achieve ...
3
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1answer
164 views

Re-use toolbar code for each tab

I'm creating a music app using QML and it uses around five tabs, each using a toolbar. The toolbar should look the same, so instead of having the exact same code for each tab, I wanted to re-use the ...
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1answer
238 views

Ubuntu Touch SDK problems

I have installed the Ubuntu touch SDK the way it is advised on the Ubuntu dev website (with sudo apt-get install ubuntu). I'm using Ubuntu 13.04. The problems/symptoms are the following : When I ...
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2answers
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Missing documentation for Qt5 on Ubuntu 13.04

I use Qt Creator for building applications and recently I decided to upgrade my Ubuntu from 12.10 to 13.04 and upgrade my current project from Qt4 to Qt5. The problem is that the Help section provides ...
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1answer
7k 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: ...
5
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2answers
254 views

Ghost title bar in Qt programs

I'm using Ubuntu 13.04 and I guess ever since I updated it from 12.10 I've been having a problem with qt applications (VLC and K3B, specifically). Sometimes, when I open them, the title bar doesn't ...
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383 views

Downgrade qt in Ubuntu 13.04

I use Ubuntu 13.04. Does anybody know how to downgrade qt to the version 4.8.2?
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582 views

Qt5 font rendering in Ubuntu 13.04

My fonts in general within QtCreator inside Ubuntu 13.04 looks 'ugly' when compared to how they looked in 12.10. 12.10 still used Qt4, so did something regarding the font rendering in Qt5 and the ...
6
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1answer
1k views

Installation of capybara-webkit ruby gem

I have following errors when I try to install capybara-webkit ruby gem Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension. ...
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0answers
170 views

PySide application lost icons when upgraded to Ubuntu 13.04

I'm developing an application in Python 3 using PySide. I upgraded my system form 12.10 to 13.04 today, and now I no longer have icons in my toolbar. The icons are loaded using QIcon.fromTheme(). Does ...
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2answers
264 views

Grid view at Ubuntu touch - How to use it?

In article about content views is a part about a Grid view. But I didn't found anywhere how to use it. Do you knew something about it? Tahnks for answer!
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1answer
676 views

install qtSerialPort library

I want to install qtserialport in precise1-Ubuntu. I got the source directory using git. next I download lib-qt4-dev and qmake. I ran qmake. it works fine. but, make fails with the following error: ...
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2answers
76 views

ListView doesn't appear

I'm working at app for ubuntu touch. I have a code with listView in it. But when I run it the page is simply empty (tehre is a title and a tabs switcher). Where is the mistake? import QtQuick 2.0 ...
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1answer
412 views

Ubuntu touch tools

I'm doing a porting exercise to port an application from Ubuntu to Ubuntu Touch. The application uses gcc 4.1.2, CMake 2.6.4, binutils 2.22. Q1. What tools are needed for setting up a Ubuntu Touch ...
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1answer
528 views

Unable to install qt-sdk unmet dependencies

I tried to install qt-sdk under ubuntu 12.10 how can I fix this issue? install log: apt-get install qt-sdk Reading package lists... Done Building dependency tree Reading state information... ...
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1answer
166 views

Should I choose KDE or Qt for an Ubuntu application?

I'm writing an application using QML and some C++ code. The main window will be all QML (possibly having a main menu bar provided KXmlGuiWindow), with the backend and some dialogs written in C++. I've ...
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3answers
10k views

Why is canonical choosing QT over GTK for Unity's next generation?

So much has been written that I'm kinf of confused, but if I'm not mistaken Canonical is building the next generation of Unity for mobile devices with Qt, and in the near future the desktop will also ...
19
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1answer
35k 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 ...
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2answers
1k views

Ubuntu Touch app with c++ core and QML interface. How to create?

How to create Ubuntu Touch application with c++ core? In examples I see only pure QML apps.
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1answer
86 views

How to install FSME?

I am looking to install FSME in Ubuntu, how can I do that. the official doc looks beyond scope - http://fsme.sourceforge.net/doc/install.html Not sure what step 4 is telling..any suggestions please. ...
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1answer
2k 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 ...
5
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1answer
30k views

How to install Qt4 in Ubuntu 12.10

I tried to use Qt5 but I have some problems while making Debian packaging process with Qt5 so I would like to have Qt4 on Ubuntu 12.10. How can I install Qt4.
5
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1answer
1k views

Make a Debian Package (.deb) from a Qt Project

I did several projects on Qt Creator and I would like to distribute them in an installable format (in this case, Debian Packages). More info about my Qt installation (and my system): Qt version ...
9
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4answers
624 views

What is the recommended widget toolkit for Ubuntu desktop?

As I understand it, Qt - C++ and QML - or HTML5 are recommended for writing Ubuntu for Phones applications. Also, correct me if I'm wrong, but Python is the preferred language for Ubuntu Desktop. ...
2
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1answer
113 views

Can I make my QT GUI programs run after completely removing unity desktop?

Can I make my QT GUI programs run after completely removing unity desktop? I am building a desktop environment on QT. How can I run my program without unity.
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1answer
646 views

QML/Qt Development path verses “Quickly” and Gtk

It seems like recently the path Ubuntu is moving towards is to have code developed with QML and Qt, and that appears to sync with their move to be able to target tablets, phones, TV devices and the ...
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100 views

Inner object properties are not shown in Qt Creator in debugging mode

I'm using Qt Creator 2.6.82 on Ubuntu 12.10. I wanted to figure out if some properties are correctly set, but I can't see them. This is the deepest I can get (I can't even open the QObject node) ...
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1answer
4k views

How to install qt sdk (qt 4.x) by apt-get (the full version)?

I've installed QtSdk-offline-linux-x86-v1.2.1 on Ubuntu 12.10 it has some bugs, crashes all the time. It does not appear in the Ubuntu Software Center and would not upgrade to the new version by ...