Ask Ubuntu Stack Exchange
Ask Ubuntu Stack Exchange

Questions tagged [qt]

Qt is an application framework originally created by Trolltech and currently managed by Digia. The KDE desktop uses the Qt framework for its applications.

About the Qt framework:

Links:

797 questions
4
votes
1 answer

No valid kits found, although a kit exists

I'm trying to open a new project in Qt Creator, and I'm getting a "No valid kits found" error. In options I do see a kit configured. I tried this and installed gcc from the maintaiance tool (although I already had it installed), but I'm still having…
Alaa M.
  • 183
  • 2
  • 2
  • 9
3
votes
1 answer

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 earth is the standard icon resource. thanks
aykut kilic
  • 31
2
votes
0 answers

How to install libqt5

Trying to run rtklib on ubuntu 16.04.2 and getting this $ ./rtkplot_qt: error while loading shared libraries: libQt5WebEngineWidgets.so.5: cannot open shared object file: No such file or directory I'm guessing I need to install libqt5? If so how…
Lightsout
  • 978
  • 3
  • 9
  • 14
2
votes
1 answer

How to choose between different versions of Qt 5?

I have a C++ Qt program. It compiles using qmake && make. It always ends up compiling using Qt 5.2.1. I want to use Qt 5.5 that I downloaded. $ qtchooser -l 4 5 default qt4-i386-linux-gnu qt4-x86_64-linux-gnu qt4 qt5-x86_64-linux-gnu qt5 None of…
Green Mo
  • 43
  • 1
  • 1
  • 4
2
votes
1 answer

Qt based apps are broken after time

I'm using Kubuntu 15.10 with Plasma 5 about 2 weeks. It has been a few updates, but the problem is still, and it prevent to work normaly. I don't know what problem is it, but this happens only with Qt apps. So if i run open dialog from Firefox…
Niklan
  • 183
  • 1
  • 8
2
votes
2 answers

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 install using the PPA method? Will the 64 bit…
Slazer
  • 459
2
votes
0 answers

run qt designer/qt assistant with commands designer/assitant respectively

I'm used to an environment where I run the qt designer/qt assistant simply typing designer/assitant in the terminal. I am talking about qt 4. I've been installing packages such as qtcreator and qt4-default, but I get this: ~$ assistant assistant:…
user2460978
  • 121
  • 2
2
votes
1 answer

How to install the Qt WebGL streaming plugin?

Qt Quick WebGL Streaming is a technology by which any Qt Quick ("QML") application can display its user interface to a user connecting via a web browser. It is provided as a Qt platform plugin in a library called libqwebgl.so. However, the Ubuntu…
tanius
  • 6,303
  • 1
  • 39
  • 49
1
vote
2 answers

I can't find maintenance tool in Qt5.5

I have already installed qtbase and all, now I am trying to, install V-play in Qt, so I'm looking for maintenance tool, from the v-play website installation instruction detail : If you already have Qt 5 installed on your system you can add V-Play…
Kishy Nivas
  • 113
1
vote
1 answer

How to install/use older version of Qt

I'm building a project that relay on open source program that was created long time ago using an old version of Qt (V3.3). Is there anyway to install the older version? or upgrading the program?
Arwa
  • 13
1
vote
1 answer

QtCore not found

I have problem regarding installation - when I want to compile KeePassX with cmake there is error with QtCore. I tried installing libqtcore, I got E: Unable to locate package libqt4-core Output of compiling KeePassX: cmake…
PKM
  • 829
1
vote
1 answer

QT version update

I'm running Ubuntu 12.04 and I've noticed that the system Qt libraries in /usr/lib/... have the version 4.8.1. Now this version of Qt is quite old and many important updates and bugfixes have been released meanwhile. I'd like to ask whether there is…
Charles Montgomery Burns
  • 13
1
vote
2 answers

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, Ubuntu-SDK, Qt4 (Designer, Linguist and Assistant). …
berrywhitex
  • 21
  • 1
  • 6
1
vote
6 answers

Symbol lookup error: /usr/lib/i386-linux-gnu/libQtOpenGL.so.4: undefined symbol: _ZNK14QWidgetPrivate17hasHeightForWidthEv

I installed skype using several process in my newly installed Ubuntu 14. 04 64 bit... it shows a skype icon in dash... but when I click on it, nothings happens. What can I do? I tried almost everything found in net. Every time it installed quite…
plabon
  • 51
  • 1
  • 5
1
vote
1 answer

Ubuntu 12.04 LTS - installing Qt 4.8.5 and Qt Creator

I found the official guide about how to install Qt 4.8.5 on Ubuntu 12.04 But that approach requires building Qt SDK (which may take some time) and setting everything manually. Moreover I need also fulfil this requirements. Later I need also install…
Irbis
  • 507
  • 3
  • 7
  • 16
1
2