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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this qt-mt driving me crazy help

checking for Qt... configure: error: Qt (>= Qt 3.3 and < 4.0) (library qt-mt) not found. Please check your installation! For more details about this problem, look at the end of config.log. Make ...
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4 views

How to force use of “overflow menu” for actions on header bar?

I am using header actions in my Ubuntu SDK app, but I would like to avoid clutter on the header bar. I have noticed that the Android-style "overflow menu" autocreates itself after a certain number of ...
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5 views

Use the design function of Qt Creator when developing Ubuntu apps

I would like to start developing Ubuntu apps with Qt Creator and I have a few queries when making a simple qml qt app. Firstly, is it normal qml and javascript? Can I use all normal qml and ...
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0answers
19 views

How to add the install prefix of Qt5 to CMAKE_PREFIX_PATH environment variable?

I'm developing a C++ program (no GUI) on Ubuntu Touch for the Nexus 4 and I'd like to test QT sensors. However, I'm having some trouble locating the install prefix of Qt 5 for CMAKE_PREFIX_PATH. Did ...
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31 views

Qt-wallets will not open after 14.04 upgrade?

Qt-wallets will not open after 14.04 upgrade? Any ideas/fixes out there? Qt-wallets will not open from folders or terminal. when I attempt to launch from terminal it gives me as follows for the ...
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14 views

qmake could not exec error while building Qt from source

I'm having an issue building QT from it's sources. I have to build from sources due to a strange requirement (that's how we are going to do it at work, once we start using QT). Building from sources I ...
2
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0answers
20 views

Font hinting problems in Dropbox, other Qt applications

I'm using Ubuntu 14.04 and font hinting works perfectly as usual, except for a couple of applications: Dropbox's preferences and Dwarf Therapist. Since they are both Qt apps, I figure that's where the ...
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1answer
807 views

Cannot mix incompatible Qt library

I found a lot of problems similar to mine on the web, but still no real solution. I'm having the annoying Cannot mix incompatible Qt library (version 0x40806) with this library (version 0x40802) ...
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1answer
11 views

Why does my QQuick application crash on Ubuntu 14.04?

Basically I have (The Game class just wraps QGuiApplication): int Game::run() { QQuickView * mMainView = new QQuickView; mMainView->setResizeMode(QQuickView::SizeRootObjectToView); ...
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84 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 ...
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1answer
3k 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 ...
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1answer
21 views

program cannot find libQt3Support.so.4 [duplicate]

I am trying to run a program but the program complains that error while loading shared libraries: libQt3Support.so.4: cannot open shared object file: no such file or directory I can see that the ...
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1answer
68 views

upgraded to 14.04 LTS, VLC is not working

recently upgraded to ubuntu 14.04 lts from ubuntu 12.04 lts. now vlc doesn't start. in terminal following output occurred - $ vlc VLC media player 2.1.6 Rincewind (revision ...
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1answer
38 views

Are QStrings mutable? [closed]

In python; strings are not mutable as far as I know. To change a string in python, you would have to create a new object. Is this the same for QString?
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1answer
16 views

How do you return a list of the current project folders and files of your current project in QtCreator?

I think Qt must have this, because QtCreator has a list on its sidebar: Ideally I am just looking for a Qt function that will just return this list. Thanks.
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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. ...
0
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1answer
491 views

Using KDE - Application Menus Missing in Qt Apps

I have multiple desktop environments installed on my Ubuntu 14.04 installation, and am primarily using KDE (today). Here's the problem I've noticed. When I've been building some newer versions of ...
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79 views

How build against qt 5.3.1?

Trying to build qt-creator v3.2.2 from source on Ubuntu 14.10. Fails. Qmake can't find qt5.3.1 $ qmake -r ... Project WARNING: QmlDesigner plugin has been disabled. Project WARNING: This plugin ...
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1answer
28 views

Ubuntu Touch: How can I debug ubuntu touch apps on the device? [duplicate]

My app works well on desktop but I can't figure out why does it crash on my nexus 7. How can I debug it while it runs on the device?
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1answer
13 views

How to run devcoin-qt (64 or 32)

Anyone know how to open devcoin-qt? I tried running it by double-clicking it but nothing happened, I shutdown the devcoind and tried it - nothing, I renamed the ~/.devcoin folder to .devcoin.old and ...
0
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0answers
20 views

Signal called on user logout

I would like to ask what is the signal that is called when the user logs out? I have a Qt gui app that has handler for SIGTERM and SIGHUP signals. The app also has its own close event handler, so user ...
2
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2answers
1k 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 ...
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1answer
43 views

Display the content of text file in qt creator

I am a newbie, using Qt creator 2.8,Qt 5.0.2 base. Till now i could open and access the file using main.cpp , Now i want to display the content of that file on executed window which pops up after we ...
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0answers
26 views

Ubuntu SDK: How can I use PyQt for developing Ubuntu Touch apps?

I've heard that it's possible, can you give me some pointers on how to do that?
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1answer
28 views

cmake not compiling with qt4

I am trying to build AMAROK on ubuntu 12. I have although installed Qt5 already but i am getting the following error. Please help me. CMake Error at ...
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1answer
29 views

dares-qt how to install

I have tried to reading one my old dvd however when i try to mount it, i get the following error : umut@DESKTOP-PC:/$ sudo udisks --mount /dev/sr1 / udisks --unmount /dev/sr1 / udisks --eject ...
2
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1answer
81 views

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

How can I store the value an user enters in a variable? For example I have this code TextField {width: 37; height: 19 var id: q1 ...
2
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2answers
314 views

Difference between Qt Creator and Ubuntu SDK?

Having downloaded them both when I installed the Ubuntu SDK, I wonder if there is any tangible difference between the two, such as the libraries being employed.
2
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1answer
104 views

Ubuntu SDK: How do I implement a “onClick” for an image in QML?

I have a background image for my page, and I want to implement a sort of page refresh when the background is clicked. However, I didn't find any actions for the image element in QT quick. What's the ...
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1answer
49 views

Launchpad Qt/C++ and external tools

I'm new to Ubuntu developpement and searching for information regarding building apps through launchpad (using recipes). I have a project of building a Qt5/c++ webkit app and wanted to ask: how to ...
7
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0answers
298 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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0answers
25 views

How do I implement multiple keymaps into a kernel?

my problem is as follows: I have a custom-made kernel that has no functionality in regards of changing the keyboard mapping. It is possible to compile a different keymap into it, but that's it. The ...
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10 views

Best resources(books/articles/videos) for a new Ubuntu Touch app developer? [duplicate]

I am new to Ubuntu Touch and Qt, and I want to master developing applications for it. I want to start quickly, and then learn it in depth. What are the best books for me to read? Can you outline the ...
2
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2answers
2k views

Can't Set Environment Variables in ~/.profile

All, I need to set environment variables in my ~/.profile since I am running a program (QtCreator) that doesn't start a bash shell. I cannot for the life of me get it to work though. QtCreator will ...
0
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1answer
119 views

KGraphViewer replacement

Is there a replacement package for the deleted KGraphViewer? The qt dev pacakage is installed. Compilation of the latest Umbrello works. Also I tried to compile it from the git remake ...
8
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3answers
5k views

Receiving error while trying to debug in QtProject

I installed the latest version of the QtProject so now I can debug C++ code. While trying to debug for the first time I got this error: ptrace: Operation not permitted. Could not attach to the ...
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1answer
251 views

Ubuntu App Development. Unable to install Ubuntu SDK and buggy Ubuntu emulator

Hello I have installed Ubuntu 14.04.1 and I have no more patience to struggle with my problem. I can't install ubuntu-sdk package: Some packages could not be installed. This may mean that you have ...
0
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1answer
3k views

error while installling qt mobility tool kit

I am installing qt mobility tool kit but it shows an error message : 1.2.0/src/multimedia' make[2]: Warning: File Makefile' has modification time 1.1e+04 s in the future g++ -c -pipe -g ...
2
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1answer
143 views

Ubuntu 14.04.1 and unmet dependencies for ubuntu sdk. Use Qt Creator instead [duplicate]

I'm trying to install Ubuntu SDK, but get the same problem like here (first, second). The promoted solution like this doesn't help me either ( The following packages have unmet dependencies: ...
8
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3answers
6k views

Making python 3.3 default python 3 interpreter instead of 3.2

So, to keep it simple. Ubuntu 12.10 has python 3.2 pre installed and it is linked to "python3". I downloaded python 3.3 and it's command is "python3.3". However, I downloaded pySide for python3 from ...
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0answers
26 views

Qt-creator publish tab missing click part

I am trying step by step to write some simple tutorial Ubuntu apps using qt-creator. First I've chosen HTML5 App then after writing some hello code or even after doing nothing I've tried to create a ...
0
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1answer
197 views

Cannot cmake mirall because Could NOT find Qt5Keychain (missing: QTKEYCHAIN_LIBRARY)

I am trying to compile Mirall on my Ubuntu 14.04.1 LTS. Here is the command I am using: cmake -DCMAKE_BUILD_TYPE="Debug" ../mirall ...
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1answer
1k views

Missing compiler error in QtCreator and Qt5.1.0 on Lubuntu 13.04

I can't compile any program in QtCreator on Lubuntu 13.04. I have this error: QtCreator needs a compiler set up to build. Configure a compiler in the kit options First of all, I installed from ...
0
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1answer
160 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 ...
1
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1answer
128 views

How to get root permission inside qt program?

I run my QT app without sudo permission but during running phase of the app I need to install the .deb so I am running the command dpkg -i mydeb.deb with qprocess in QT or some other commands which ...
0
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2answers
2k 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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2answers
939 views

How to install needed Qt packages to build kernel on 14.04?

I'm going to compile kernel on Ubuntu 14.04 64-bit, so I start with installing packages that I need: sudo apt-get install build-essential bin86 kernel-package libqt3-headers libqt3-mt-dev wget ...
2
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2answers
901 views

Can I create a proprietary application using Qt?

I am using Qt4 to build an application and for some reason I want to keep it proprietary. Qt4 is released under LGPL, does that force me to release the code to my application. I ask this question ...
2
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0answers
108 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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109 views

WARNING: TARGET is empty make: Nothing to be done for `first

Can anyone help with this error WARNING: TARGET is empty make: Nothing to be done for first'. I wish to build this qt package When I run ./compile in the the downloaded folder, it gives this ...