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

learn more… | top users | synonyms

10
votes
1answer
21k 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 ...
3
votes
1answer
684 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
1answer
563 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 ...
2
votes
1answer
185 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: ...
1
vote
1answer
830 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 ...
3
votes
0answers
182 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
0answers
154 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
0answers
953 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 ...
3
votes
0answers
751 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
0answers
25 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
0answers
22 views

Why does the system compose sequences take priority over my .XCompose file in Qt apps?

My usr/share/X11/locale/en_US.UTF-8/Compose <Multi_key> <minus> <greater> : "→" #Rightwards arrow My .XCompose file has a similar rule with a space at the end <Multi_key> ...
2
votes
0answers
227 views

Can't start qtcreator

I'm trying to start qtcreator, but here is what i get: $ qtcreator libGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: i965 libGL error: No matching fbConfigs or ...
2
votes
0answers
634 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
0answers
18 views

Can skipping `fsck` on boot impact serial-port communication?

I have a bizarre serial-port (RS-232) communications issue (it appears that some data is being dropped, though I'm not sure if it's outgoing, incoming, or both) that I'm observing sporadically. I've ...
1
vote
0answers
13 views

How to have better transition between Splash Screen and Program in Frame buffer?

I am currently using Yocto Embedded Linux with frame buffer. When the machine is boot up, there is a splash screen. After the the splash screen, I will run rc.local to autostart my program. The ...
1
vote
0answers
19 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
29 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
35 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 ...
1
vote
0answers
60 views

Qt Creator not launching in OpenSUSE

After a few years using Ubuntu, I decided to go back to OpenSUSE. I installed Qt Creator using the online installer from Qt, along with all the framework versions I wanted. Qt Creator refuses to ...
1
vote
0answers
13 views

How to force correct name for .desktop file

I'm developing a Qt application using CMake, and am trying to make it difficult to open more than one copy of the app at the same time (as with Mac application packages -- you have to call the ...
1
vote
0answers
71 views

wkhtmltopdf & debian - install

I have a question about the installation of wkhtmltopdf on Debian machines via the apt-get command. So far, I've tested three environments, with different results, and I'd like to better understand ...
1
vote
0answers
51 views

QT application doesn't receive udp broadcast since linux kernel 3.13.0-70

I'm developing a QT application on Ubuntu and suddenly had problems because QT app doesn't receive UDP broadcast messages. They are visible in Wireshark on that machine, but never received in QT. ...
1
vote
0answers
23 views

Old(ish) package has QT3 dependency - my distro doesn't carry it

I'm trying to build pdfedit, whose latest version - from 2010 - requires QT 3 development files; yet - I only have QT 4 and up on my distro (Debian testing). Do I have any recourse other than manually ...
1
vote
0answers
934 views

error while loading shared libraries: libboost_thread.so.1.54.0: cannot open shared object file: No such file or directory

I am trying to connect MongoDb with Qt c++. When I build it there is no error, just information like; :-1: warning: libboost_system.so.1.54.0, needed by /usr/local/lib/libboost_thread.so, may ...
1
vote
0answers
99 views

How to prevent Qt Applications from using GTK+ theme

Whenever I want to use custom QML components in my apps it makes them use GTK+ theme. How can I prevent this? Why am I asking here? Because I believe it has something to do with files ...
1
vote
0answers
107 views

How to change the Qt version used by TeXstudio in elementary os Freya?

I have installed TexStudio 2.8.8. When I open it, it says TeXStudio has been compiled with Qt 4.8.6 but running with Qt 4.7.3. Please get the correct runtime library. when I checked in terminal with ...
1
vote
0answers
178 views

Is there a way to disable mouse scrolling on a combobox in GTK/Gnome and Qt/KDE?

I'm scrolling a window content and it happens the mouse pointer place over a combo box and it begins to scroll its content. This is annoying. I experienced it in KDE and Gnome and I'm wondering is ...
1
vote
0answers
273 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
0answers
127 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
vote
0answers
137 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
0answers
281 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
0answers
13 views

Unable to start VLC - could not find Qt platform plugin

I recently upgraded my Ubuntu from 14.04 to 15.10. Yesterday I tried installing KDE plasma desktop but due to some errors I had to remove it. The system asked for a partial upgrade and I did that. Now ...
0
votes
0answers
12 views

Build a Qt5 image for a mx6

I'm currently going through a BSP procedure for building a miniSD card bootable image for a SoM board with a touchscreen and it uses Uboot, Linux kernel, Yocto and Qt5. While I have many years ...
0
votes
0answers
26 views

Building owncloud on openwrt: qt5keychain missing

I'm trying to build owncloud-client on openwrt but I got an issue and I couldn't find a way to solve it: -- Build of crashreporter disabled. -- Found Qt5 core, checking for further dependencies... -- ...
0
votes
0answers
31 views

In ubuntu, how to run an application in KISOK [single application] mode?

I have a Qt application, which I want to run in the Embedded device, ubuntu OS. KIOSK [Single application] mode without giving any control to use the OS or other features. But I am using the WICD ...
0
votes
0answers
106 views

FBDEV(0): FBIOPUTCMAP: Invalid argument

I am trying to solve a problem with my video output via HDMI, a situation is as follow. I have device (BeagleBone Black) which runs on Debian Jessie 8.2, I developed an application in Qt5 which ...
0
votes
0answers
29 views

ArchLinux QT5 Segfault

I am having a problem with the Deepin launcher (dde-launcher). I managed to set up an Arch Linux and I like it but now I run into a problem: the launcher of Deepin is not working. I am not able to ...
0
votes
0answers
31 views

How to setup VLC with gtk file dialog?

My long lasting previous installation somehow tied up VLC and gtk file dialog. I didn't even do anything special, except installing VLC. After update to VLC 2.2.1 the file dialog was replaced to Qt ...
0
votes
0answers
269 views

How do you open Wireshark's Legacy (GTK) By Default?

I've recently updated Wireshark on OSX El Capitan from 1.12.0 to 2.0.0. The newer stable release uses the Qt interface instead of the old X11 but the new UI is a lot buggy for me and I want the old ...
0
votes
0answers
145 views

QT Creator cross compiling for raspberry pi

I have used the instructions in link below for cross-compiling QT creator. While compiling qt base, I got the errors below after make -j 4. http://wiki.qt.io/RaspberryPi_Beginners_Guide collect2: ...
0
votes
0answers
37 views

Getting Dogtail to work with QT on GNOME 2

My question is in regards to GNOME 2 running on a CENTOS 5 box. I'm trying to get the Dogtail automation tool to work with my given box for the purpose of testing a QT application. Versions .7 (which ...
0
votes
0answers
15 views

Jerk in QT media player

I had created Video player in Qt-5.2.0. At backend, Qt is using gstreamer-1.0 for playing video. Whenever I play the video in QT Media Player, I see some jerk, and choppiness in video, while playing ...
0
votes
0answers
14 views

0 Active connection while Downloading Blockchain?

I am not able to connect to download blockchain in logoscoin. It shows O active connection, I am also attach debug logs below: 2015-01-24 06:18:15 Logos version v0.8.6.4-ga5aedeb-beta (2015-01-22 ...
0
votes
0answers
113 views

assertion Failed error while running Bitcoin-Qt application?

I have downloaded Bitcoin-qt project from GitHub for Ubuntu 14.04, But I don't know why I'm getting error: Error: /main.cpp:2985: bool InitBlockIndex(): Assertion `block.hashMerkleRoot == ...
0
votes
0answers
40 views

Print to Qtopia Terminal

I'm trying to print hello to the Qtopia (2.2.0) Terminal using a program.desktop file program.desktop: [Translation] File=QtopiaApplications Context=program Comment[Desktop Entry/Name]=Use soft ...
0
votes
0answers
32 views

Trouble with installing libqca2-dev on ubuntu 12.04

I have installed Qt 4.8.4 from source at usr/local/Trolltec and now that I am trying to install libqca2-dev on Ubuntu 12.04, the apt-get tool fails with a dependency error stating that libqt4-dev is ...
0
votes
0answers
173 views

Dead key not working with konsole, yakuake

After setxkbmap fr, dead keys do not work under konsole and yakuake (typing the dead key ^ immediately prints a ^, rather than wait for the next character), while they work in xterm. The font I'm ...
0
votes
0answers
185 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
votes
0answers
363 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: *** ...
0
votes
0answers
283 views

Downloading and installing KDE libraries on Kubuntu 12.04

I want to start writing some simple plasmoids. However I am unable to use K-objects in QtCreator or KDevelop. I likely do not have the required libraries / SDK. How do I install it, or if I already ...