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 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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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 ...
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47 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 ...
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How to configure Qt to access standard icon resources/themes?

I am developing an app using Qt designer and struggling with mechanizing the icon resource themes. Essentially, I'd like to access all of the standard icons when I click choose resource. Where on ...
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35 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 ...
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QT applications indicator and appmenu don't work / ubuntu 14.04

I'm not sure when this happened,but form yesterday,I found my VLC player's indicator and appmenu dont work. there is no indicator icons and appmenu doenst appears on the top bar. Not only VLC but ...
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QT5.1.1 installation problem

while I try to installing QT in Ubuntu I got error as, Qt: Session management error: None of the authentication protocols specified are supported No marker found, stopped after 1.00 MiB.
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Can I hide the mnemonics in Qt applications?

Using stock Ubuntu. The underscores in the menus make these apps (Skype, to a lesser degree VLC etc.) look out of place and (imo) ugly.
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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 ...
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unable to run make during installation of kernel 3.3.6

desktop:~/Desktop/linux-3.3.6$ make xconfig make[1]: Warning: File `scripts/kconfig/.zconf.tab.o.cmd' has modification time 1.7e+04 s in the future CHECK qt * Unable to find the QT4 tool qmake. ...
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How to run Java application in KDE with Qt-like UI?

Continuing my question in Install Ubuntu or Kubuntu? I have tried Kubuntu (KDE), and it was very cool as cool as Ubuntu (GNOME). but there is little problem with its user interface when we start Java ...
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Ubuntu Qmake is not an executable

I have the latest versions of qtcreator, qt5-qmake build-essential and g++ installed. In option of Build & Run and choose qmake in /usr/bin/qmake I get this error: The qmake executable ...
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Shared library problem: OpenMesh

I have a Qt app with OpenMesh dependency. I built the OpenMesh library from source: cmake ... make make install It installed to the /usr/local/lib/OpenMesh folder: libOpenMeshCored.a ...
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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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How to completely remove Qt environment?

How to completely remove Qt environment? I installed Qt Creator Integrated Development from the Ubuntu Software Center, then I compiled and installed Qt 4.8.6. There were few errors when I try to ...
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Configuration of $QTDIR

I installed Qt from ubuntu repository. I'm on Trusty. Now I use a another program who need $QTDIR but when I enter echo $QTDIR, the terminal output nothing. How to set up this path without ...
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Make sniqt recognize all tray abilities (or create a working indicator in Qt)

There is this old thread of mine: How do I create a working indicator with Qt/C++? where I was suggested to use the QSystemTray library for making a tray icon in Ubuntu for my application. Sniqt is a ...
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Qt 5 configuration

I have a problem setting Qt5 apps correctly on my computer. I'm running Ubuntu 14.04 with KDE4, I have configured the look in the KDE system settings and that look is used in every qt4 apps and gtk ...
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24 views

KGraphViewer replacement

Is there a replacement package for the deleted KGraphViewer? The qt dev pacakge is installed. Compilation of the latest Umbrello works. Also I tried to compile it from the git remake ...
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Qt-> how to set ALT key active

Can someone please explain how to set the Alt key as active permanently? I'm trying to make an application for Ubuntu and I need to make it active. I want to add it to the code below in the if ...
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Installing Qt Creator 3.1.2 on Ubuntu 14.04 LTS

I have found PPA and manual method to install Qt Creator 3.1.2 on Ubuntu 14.04 LTS. Which one is more reliable (has less bugs once installed)? The manual method offers 64 bit installation. What if I ...
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Restore qt integration after removing KDE

Restore GTK integration after removing KDE; this shows how to remove the kde-theme for gtk, and now I want to do the same for qt-applications. I have tried qt4-qtconfig, and it does not work. Here is ...
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Where are the Build and Src locations for QtCreator?

In the QtCreator Plugin Creation Wizard, this http://doc.qt.digia.com/qtcreator-extending/images/firstplugin-pluginsetup.png window asks for Qt Creator Sources, and Qt Creator Build. I installed ...
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Installation qtsampleplayer ubuntu 14.04

I'm new to Linux so please accept my apologies if the question is trivial. I'm trying to install qtsampleplayer under Ubuntu 14.04 (32bit) according to these instructions: Prerequisite: libdash must ...
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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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(SOLVED) Build libqtwebkit4.so from sources

I'm trying to build libqtwebkit4 from sources : https://launchpad.net/ubuntu/+source/qtwebkit-source Everything goes right: I have instilled all dependencies (gtk3, glib, pango,...) ./autogen.sh ...
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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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I can't open Qt 4 Designer on latest Ubuntu

I click the Icon, and it will flash but will not open. Qt Creator works, but I'm trying to use Python. I've tried remove and install a couple times, but still nothing. I have downloaded PyQt4, ...
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Can both appmenu-qt and appmenu-qt:i386 be installed at the same time?

OK, so here's the backstory. Skype recently released version 4.3 on Ubuntu. It now has a menu bar, which it did not before. The only issue is that because it is 32-bit software, it's menu bar is not ...
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how to resolve “TypeError: Cannot call method 'push' of null”

I'm a new qml programmer and I found my self in this problem that when I want to call a new page when clicked on a button it says: TypeError: Cannot call method 'push' of null I've tried everything ...
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excel query in qt

I have a program to connect with excel file. my excel file contains usernames and passwords of users who has access Permission to application. in interface of the program i have two QlineEdit(one for ...
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How do I install things? Or, what's xcb and qt and how do they solve the riddles of my life?

tl;dr is at the bottom for those not wanting reasons, just questions. I have the latest TeamSpeak client downloaded from the site of the authors of said program. I've managed, after a load of ...
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Trying to make my sixaxis ps3 controller work on my computer for minecraft

Ok so I followed the steps on here and on steps 8 and 9 I got this g++ -c -pipe -O2 -Wall -W -D_REENTRANT -DDEVDIR=\"/dev/input\" -DICON24=\"/usr/local/share/pixmaps/qjoypad/icon24.png\" ...
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debug symbols for Ubuntu 12.04

I try to watch how programs work by running them by the 'Qt Creator' debugger. For better orientation I'd like to see also the system (core) utilities fully in the call stack window as I am used from ...
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Qt C++ windowMinimized no reaction on Ubuntu

Heloo all! Me and a friend are creating an app for linux, everyting works but the custom minimize button doesnt whant to work on Ubunutu 14.04, there is no reaction when presed clicked an so on. Any ...
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60 views

How to make a project of Krusader

An example for my general question An introduction to translating and debugging source code : I had installed the 'Qt 4 Designer' and I have downloaded the krusader-2.4.0-beta3.tar.bz2 file. Among the ...
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86 views

emit signal with custom type objects array parameter from c++ and receive in qml

I would like to emit a signal from a Qt C++ class which includes a parameter that is an array of custom objects (inherited from QObject) and receive the parameter in its qml slot, but i'm afraid it is ...
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67 views

LD Library Path

I am not sure whether my LD_LIBRARY_PATH is working. I installed Qt5.2.1 on Ubuntu and tried to execute an application from the command line using sudo ./App1. ( App1 needs sudo access, hence I ...
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What is the correct way to use g_signal_connect() in C++ for dynamic unity quicklists?

I want to make my application use dynamic unity quicklists. For building my application I am using C++ and the QtCreator IDE. When a menu action is triggered I want to be able to have access to a ...
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1answer
25 views

Unable to access i18n in QML app's JS file

I'm having trouble importing the i18n library included in Ubuntu.Components 0.1 for use in a JS file. I initially ran into my question/problem while hacking on the 'Clock' Ubuntu Touch core app, but ...
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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 ...
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69 views

Setting up Themes in LX-Qt

I recently installed LX-Qt on Ubuntu Server. Everything went fine, but there seems to be an issue with the themes. When a theme is set in "Qt Configuration" (currently "QtCurve"), it doesn't change ...
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How do you change qt themes by hand?

I am running a light desktop with Fluxbox and trying not to install anything more than I absolutely have to. I was wondering how one would go about changing qt4 and qt5 themes by hand much like you ...
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75 views

QML: Overriding a signal handler from other element

Is it possible to override an elements action (eg onTriggered() of a Timer) from within the onClick() of a button? Something like so-> Button { id: centerBtn ...
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1answer
43 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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What is the fundamental GUI library for Ubuntu starting with 12.04?

I have started exploring deeply into doing development for the Ubuntu phone. In the past, and having used stock Ubuntu, I always found that GTK was the standard GUI library. But now, with the phone ...
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cannot find -lQtMultimedia

Using QtCreator with Qt 4.8 I need QT += multimedia in my pro.file I have already installed qtmobility-dev. Still my multimedia package is not found. Why?
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Install old QtCreator on Ubuntu 14.04

I want to build my application on Ubuntu. The last versions have been tested and programmed under Windows, because it is a multiplatform application. Sadly, under Ubuntu the systray icon did not work ...
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2answers
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QML Qt 5.2 problem with mp4 video

I have qt 5.2(ubuntu sdk) installed on Ubuntu 14.04 When I try to run QML code: MediaPlayer { id: mediaPlayer source: "../path/test.mp4" autoPlay: true } VideoOutput { id: video ...
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How to install Qt4.6 libraries on Ubuntu 12.04?

I use Ubuntu 12.04. I am working with Qt IDE. I need Qt4.6 libraries for supporting my applications. Instead of this Ubuntu 12.04 provide Qt Creator IDE based on Qt4.8.0 libraries by ...