Qt is an application and UI framework. The K Desktop Environment is based on QT.

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2answers
5k views

What is difference between GTK and QT applications?

Many packages available with GTK and QT versions. So, What is difference between them? Is there any difference in performance or working method?
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3answers
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Mounting and modifying a loopback file without sudo/root, is it possible?

I'm trying to adapt a tutorial into an easy to use script http://qt-project.org/wiki/RaspberryPi_Beginners_guide. I'm trying to reduce the need for sudo/root as much as possible (preferably, only ...
6
votes
1answer
262 views

How to dump the icon of a running X program?

Is there a way to get the icon of a running X program? When you switch between windows, you could see the icon of it, e.g through xfwm4.
4
votes
1answer
783 views

Archlinux & openbox - greyish win 95 applications

I have just installed Archlinux & openbox but i have to say i am a bit dissapointed that the applications have this dull greyish (win 95) look: On the picture there are two programs open which ...
4
votes
3answers
761 views

How to make Compose work in GTK and Qt apps?

I used Gnome for a long time, but preferred vanilla X input method (xim) over the default GTK behaviour. I just set GTK_IM_MODULE and QT_IM_MODULE enviroment variables to xim, and didn't have any ...
3
votes
1answer
2k views

qtconfig tool for Qt 5?

I've just installed QT 5 in Arch Linux, but only qtconfig doesn't work: %> qtconfig qtconfig: could not exec '/usr/lib/qt/bin/qtconfig': No such file or directory Yes, there's no such file, not ...
3
votes
1answer
3k views

How do I change which version of Qt is used for qmake?

I feel like there should be a simple way of doing this, but my googlefu is failing so I'd really appreciate some info on how to switch (or even permanently change) which version of Qt is used when ...
3
votes
4answers
577 views

Qt programs have Greek fonts on one Debian account (QtConfig, Virtualbox and VLC)

Update: I have created a new user via adduser and Virtualbox fonts are OK there. This does not solve my problem, however... I still don't know what is going on and I'd like my own user account to have ...
3
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1answer
223 views

Suddenly I have troubles plotting with python

I have a code that I used yesterday to generate plots. Today, when I tried to use it (with the same input as yesterday), I get an error: QGtkStyle was unable to detect the current GTK+ theme. ...
3
votes
1answer
72 views

Qt Application Disobeying Xmodmap

A long while ago, I created a ~/.Xmodmap reversing the 4 and 5 to create "natural scrolling": pointer = 1 2 3 5 4 7 6 8 9 10 11 12 I source .Xmodmap in .xinitrc in the standard fashion (xmodmap ...
3
votes
1answer
319 views

Encoding Problem: Qt Apps delete all non ASCII chars from files

Qt applications are deleting non-latin characters from ISO-8859 encoded files on my Gentoo system. Actually I'm trying to merge two German files with KDiff3 and P4Merge (making "Whlen" out of ...
3
votes
1answer
700 views

Trying to use multiple Debian repositories

General situation: I need to port a Qt project from MS Visual Studio 2010 to Linux (Debian). In VS 2010 I have Qt v.4.8.1, but in Debian it is Qt v.4.6.1. This difference prevents me from porting, as ...
3
votes
1answer
201 views

Start QT Application on bootup on an Embedded Linux Device (Beaglebone Black)

Below is picture of the display on bootup. Expected display is overwritten by Angstrom screen Expected Display Application is been started as a service. Below is the content of the service file ...
3
votes
0answers
352 views

Test automation tools for desktop application

Is there any GUI / functionality test automation tools for testing QT3 based GUI applications? I went through LDTP, dogtail, Squish, and Sikuli but all dependent on specific QT versions. Also, ...
2
votes
1answer
450 views

Qmake not working in a mounted smb dir

I'm trying to use qmake in a samba mounted directory. Here is what I get jj@deb32-6:~/smbShare$ qmake . QFSFileEngine::currentPath: stat(".") failed QFSFileEngine::currentPath: stat(".") failed ...
2
votes
2answers
376 views

How do I install this script as root in terminal: ./qt-opensource-linux-x64-5.3.2.run?

I need to install qt5 on my system and I can only run it as the normal user. When I try to run it as the "super user" I get this error: root ~ # ./qt-opensource-linux-x64-5.3.2.run No protocol ...
2
votes
1answer
53 views

Qt program not invoked by cron

I had a simple Qt program, when running, it shows a simple window with a countdown timer. If you might be interested in the code, please see here. I had crontab line * * * * * ...
2
votes
2answers
228 views

Qt applications have tiny fonts on XFCE

My question is almost the same as this one but the answer did not work for me. I'm running OpenSuse 13.1 with XFCE desktop. I have set ~/.kde4/share/config/kcmfonts with forceFontDPI=0 but it didnt ...
2
votes
1answer
361 views

Can Qt SDK be used for development on any Linux distro?

Fisrt of all I am a Windows developer guy but really like Linux. On Windows, Visual Studio provides an excellent IDE for C and C++ development. The only other IDE and toolkit I like is the Qt SDK and ...
2
votes
1answer
121 views

ld cannot find -lQt5Multimedia

I'm trying to build BBQScreen for Linux. During the make process, I get the following error: g++ -m64 -o Linux/BBQScreenClient2 debug/main.o debug/mainwindow.o debug/screenform.o ...
2
votes
1answer
626 views

Qt based apps have unreadable, tiny font sizes

I'm running debian squeeze with Xfce 4.6. Today I logged onto my machine and all Qt-based apps have really tiny font sizes. I took a screenshot with Kile, skype 2.6, Kate and gedit for comparison: ...
2
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1answer
260 views

Will updating KDE also update Qt?

Right now I'm using OpenSUSE 12.2 with KDE 4.9.4. If I upgrade that to KDE 4.10 in January, will it also bring in Qt 5 (or at least newer Qt packages)? Or are the Qt packages tied to the OS?
2
votes
1answer
242 views

Qt based apps have wrong encoding?

I have Ubuntu 11.04. Yesterday I installed VirtualBox and the encoding was wrong (I couldn't read anything). I know its UI very well so I tried changing the UI display language but it didn't work as ...
2
votes
0answers
57 views

Behavior of ALT in Qt5 applications

I work in Arch Linux 64bit with both English and Hebrew keyboard layouts available, using Alt+Shift to change between them. I recently noticed that when I work in Texmaker, which is a Qt5 ...
2
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0answers
415 views

How to fix link error under CMake for class QX11Info on Mac OS X

I'm trying to build kxstitch, which is designed for Linux, on OS X. I've gotten most of the way there by installing MacPorts, XCode, KDE, etc. and making minor changes to the build file, but am ...
1
vote
1answer
62 views

Why does Debian under-report the space available when installing Qt?

I want to install Qt on my Debian but it doesn't detect the whole free space! I tried to install it in /home/Qt but it says that only 23.87 MiB of space is available while df -h says that there is ...
1
vote
2answers
3k views

Starting Qt Application On Startup for Embedded Linux

I'm trying to get a Qt application to launch immediately after booting up. When booted, the Linux image does nothing more than launch an X server and a terminal. It also has the cron daemon running in ...
1
vote
1answer
415 views

Ubuntu Qmake is not an executable

after installing new version of QtCreator in Ubuntu and tux-world@alachiq:~ > sudo apt-get install qt5-qmake build-essential g++ gcc Reading package lists... Done Building dependency tree ...
1
vote
2answers
653 views

GTK2, GTK3 or QT for LXDE optimized application

For developing an application optimized for LXDE, should you choose GTK2, GTK3 or QT? Most LXDE apps are currently using GTK2, but it looks like GTK2 is becoming dead and the LXDE developers are ...
1
vote
1answer
529 views

Error QProcess: Destroyed while process is still running

Edit: I discovered that the problem is not related with the script cited below, but I'll leave it there just for history. Well, this error appears when I close texstudio with the viewer open (xdvi or ...
1
vote
1answer
25 views

What are the files in /tmp that start with “qipc”?

There are empty files like this in my /tmp directory: qipc_sharedmemory_soliddiskinfomemac5ffa537fd8798875c98e190df289da7e047c05 ...
1
vote
2answers
3k views

moc command not found?

On my Gentoo systems I've never had a problem with this and I run moc as I run any other command in the terminal. I recently switch to Fedora 15/16 and notice that running moc doesn't work. I get ...
1
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0answers
33 views

Streaming Qt over ssh

I am trying to stream a program over ssh and it doesn't work. It is written in qml and I've already compiled it, but qmlscene doesn't work either (doesn't matter what file). The error I'm getting is ...
1
vote
1answer
386 views

chrome ui issues with mint 17

I did install Mint 17 (Qiana) today and I seem to have problems with the window title bars such as chromium title bar. I have limited knowledge of tool kits such as qt or gtk. From what I read so ...
1
vote
0answers
369 views

How do I set default font for all Qt5 applications?

In Qt4, there used to be a tool called qtconfig that allowed you to set the fonts and other stuff. It also picked up the settings from KDE4's control panel. I'm working with Qt5 now (binary ...
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0answers
56 views

Is there a QT4 equivalent of gksu, not dependent on KDE libraries?

Is there a QT4 application with the same functionality as sudo to gksu that does not require an entire KDE desktop to be installed?
1
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0answers
85 views

How do I get a Qt app running on MATE to open embedded URLs?

I'm running Linux Mint with the MATE desktop. I'm using Everpad, which is a Python app that uses Qt. When I click on an http URL in the text, nothing happens. I assume this is because Qt doesn't have ...
1
vote
1answer
269 views

Buildroot OpenGL Capable Backend

I'm trying to configure QT 5 through buildroot and some options are not available with the message requires an OpenGL-capable backend. I'm using buildroot 2013.08-rc1 but the same message comes up ...
1
vote
0answers
169 views

Can't drag and drop in Qt Creator

I recently installed the system upgrades for my Ubuntu distro (12.10). Since the upgrades, I can't drag and drop items in Qt Creator. I found a solution that requires editing of xorg.conf. My system ...
0
votes
2answers
723 views

How to create QtCurve theme KDE

I want to make my gtk2 theme for KDE. Is there a good instructions/tutorials/tools for creating a QtCurve theme. Can Images be used as elements (buttons, badgrounds, handles, scrollbars...)
0
votes
1answer
43 views

Is there an easy way to print the GTK and QT versions installed on a system?

Is there an easy way to print the GTK and QT versions installed on a system? I am wanting to make a script that will print the version numbers of various developer tools and libraries.
0
votes
1answer
188 views

How to know which Linux kernel versions Qt 4.7 supports

I'd like to develop Qt 4.7 based applications running on my arm-linux MCU. However, I'm not sure if this Qt 4.7 supports the following two things: my Linux 2.6.37 kernel my Ti3530-cortexA8 MCU. I ...
0
votes
1answer
313 views

Scribus crashes with .ICEauthority

I've been trying to get scribus to work on my new gentoo 12.1 (amd64, XFCE, qt 4.8.2) installation, but when running as a regular user the program won't start up. Thanks to suggestions and extra tests ...
0
votes
2answers
481 views

Getting list of installed apps (NOT packages)

How can I get list of installed apps (based at files in /usr/share/applications/) without writing own parser? I need just app name, path to app icon and path to launch app. I'm using C++ with Qt ...
0
votes
1answer
239 views

QT applications does support Unicode

My system is Gentoo amd64, and the desktop environment is Xfce4. So far, most applications works well, except the terminal and QT-family applications. The Chromium,Thunar, Thunderbird and many other ...
0
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1answer
28 views

How to edit Qt4 source and make changes apply

Sorry for noobish question, I have never done this before. Basically, I have a change to be done in /usr/src/qt/src/src/gui/kernel/qclipboard_x11.cpp There is a 10s timeout that causes apps to ...
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0answers
12 views

Qt 4 designer, I want more than KPlotWidget

In my Widget box, there is only the KPlotWidget. How could I add a MatplotlibWidget? I am running Ubuntu 14.
0
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0answers
90 views

Unable to create gui in Qt creator

Till now I was creating GUI on windows using c++ on visual studio, now I decided to move on linux. So I install Qt creator from here . Now I follow a video tutorial for creating gui application with ...
0
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0answers
41 views

Plasmoid - connect KDE signal with QML UI

I'm working on this small KDE plasmoid and I really like the QtQuick/QML, but now I have this requirement. I need to do an action when a window is shown or closed in KDE. KDE API have signals for ...
0
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0answers
158 views

qtcreator debugger shows <unavailable synchronous data> when trying to view the contents of std::map

I'm running QtCreator 4.8.0 on a Ubuntu 12.04 (64bit) machine. apt-cache policy qtcreator shows: qtcreator: Installed: 2.4.1-0ubuntu2 Candidate: 2.4.1-0ubuntu2 Version table: *** ...