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

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21
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2answers
19k 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?
21
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1answer
565 views

Multiple Keyboard Layouts and Shortcuts

I configured KDE to switch easily from a bépo (french-dvorak) to an azerty layout. I configured it with the KDE interface (systemsettings), but I guess it just call setxkbmap be and setxkbmap fr. The ...
10
votes
1answer
20k views

Chromium - Enabling Widevine Content Decryption Module

I am trying to enable Widevine inside Chromium in order to play video from source like Netflix. Recompiling Chromium is not really an option since I use Qt new browser that uses Chromium. I'm trying ...
9
votes
2answers
10k 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 ...
8
votes
3answers
16k 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 ...
7
votes
3answers
4k views

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 ...
7
votes
1answer
486 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.
6
votes
1answer
383 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 ...
5
votes
3answers
1k 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 ...
4
votes
1answer
1k 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 ...
3
votes
4answers
729 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
votes
1answer
237 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
415 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
874 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
0answers
168 views

Cannot use keyboard within Qt app without sudo

I have an embedded Qt application crosscompiled that runs on BeagleBone Black. It works Ok, but one thing- It doesnt accept keyboard input if i wont run in directly on BeagleBone Black preceeding with ...
3
votes
1answer
597 views

How can I set the default font size for all Qt5 apps?

I run Gnome, which has pretty good support for my HiDPI screen. However, when I run QT apps I can't seem to find a way to scale the fonts. Is there a way to do this without installing a full version ...
3
votes
0answers
145 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 ...
3
votes
1answer
544 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
729 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
636 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
1answer
2k views

Qt5 applications don't use gtk style on Liux Mint

Qt4 applications use the gtk theme by default, but Qt5 applications need to be started using -style gtk, or they don't look like gtk applications. Is there a way to make Qt5 applications use the gtk ...
2
votes
2answers
1k 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
176 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
888 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
557 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
104 views

Unable to find or load Qt platform plugin “xcb” on debian strech

I've been having a problem loading software that use xcb, such as vlc and plasma desktop. Vlc gives the following error: [0000000000ddc148] core libvlc: Running vlc with the default interface. Use ...
2
votes
1answer
711 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
970 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
votes
1answer
285 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
292 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
21 views

How to turn a git repo into a ppa

Suppose I have a git repo, the instructions for building are: sudo apt-get -y install build-essential git mesa-common-dev libglu1-mesa-dev libsdl2-dev libsamplerate0-dev cd ~ wget ...
2
votes
1answer
131 views

Symbol lookup errors in (Qt?) dynamically linked libraries

I'm using Ubuntu 15.10 Problem: For some days now I have been getting Errors like this when opening some applications: /usr/lib/x86_64-linux-gnu/libpoppler-qt5.so.1: undefined symbol: ...
2
votes
0answers
921 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 ...
2
votes
0answers
618 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
81 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
3answers
6k 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
2answers
1k 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
3answers
5k 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
vote
1answer
52 views

What does it exactly mean if something “Requires Qt4”?

I need to get this program to work. As usual with linux software, it requires that I compile it myself without any real instructions. Fine, I tried to run cmake on it. ...
1
vote
1answer
2k 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
1answer
853 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
2answers
573 views

How to fix graphical issues with Qt applications? (dolphin:14635): Gdk-WARNING **: shmget failed: error 28 (No space left on device)

I'm on Linux Mint 17.2 Rafaela (i.e. Ubuntu 14.04) and all my QT-based applications have been ugly after an upgrade (text is scrambled, menu content disappear, cf. screenshot below). Environment $ ...
1
vote
1answer
415 views

How to change QtCurve style/theme without KDE via config file editing?

I have downloaded a QtCurve theme. I do not use KDE, I use a standalone WM (awesome). How do I change QtCurve style/theme via config file editing? Which config file contains this setting?
1
vote
1answer
612 views

KDE 5 of Debian Jessie - What Qt version was used to compile it?

I had go back to Windows a while ago because of the incompatibility of linux desktops with high-res (UHD) and touch screens. As now it got much better than before, I'd like to come back to linux, as ...
1
vote
1answer
971 views

How to debug an installed Qt5 library with GDB?

Background: I am programming with Qt5 and want to debug the core Qt5 libraries on Debian using GDB. I have installed all the necessary -dev and -dbg packages. When I try to debug, GDB complains that ...
1
vote
1answer
174 views

Yum claims library is installed but it is not

I'm trying to compile a program using cmake which has a dependency on libQtWebKit_debug.so. According to yum provides, that library is supposed to be in /usr/lib64/ but it is not there: yum provides ...
1
vote
1answer
44 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
0answers
11 views

Trying to build icecc icemon, cmake can't find Qt5

I'm running Centos 7 and I want Icemon for icecc. If there is a package I can install, great, but I don't know of one, so I'm attempting to build it from scratch and that relies on cmake. My missing ...
1
vote
0answers
11 views

Can I get QT 4 applications to work with HiDPI?

Lots of programs are working for me now with HiDPI, but there are still lots of programs that don't, like Mendeley Desktop (QT4, I think), and Okular (also QT, I believe). The icons are tiny, and many ...
1
vote
0answers
28 views

Program on Debian8.3 appears different than on Fedora18

I've made a couple of programs (Let's call them ProgressBar and LabelsAndInfo) with Qt4.8 and C++ for my enterprise's HW. It runs on a Fedora 18 and it works fine. Now, a mate is trying to run all ...