Qt

Qt

Everything You Always Wanted to Know on Qt... (But Were Afraid to Ask) a collection of links of interest

See also

• Main_Page
• Technoverse

• Qt
• QML
• CPlusPlus

Qt

Qt , "cute" , is a C++ framework inspired by NextStep and its Objective C
Originally created by Trolltech, bought by Nokia , resold to Digia
was the framework for the Green Phone, for Nokia Maemo, Meego, Sailfish OS
Crossplatform ( QNx, RTOS, WxWork, GNU/Linux, Max OS X, Windows, Android, iOS)

 https://www.qt.io/developers/
 https://www.qt.io/download/
 http://doc.qt.io/qt-5/embedded-linux.html
 http://doc.qt.io/qtcreator/index.html
 http://doc.qt.io/qtcreator/creator-design-mode.html
 http://doc.qt.io/qt-5/internationalization.html
 http://doc.qt.io/qtcreator/creator-debugging.html
 https://www.qt.io/programming-with-qt-for-desktop-training/
 https://www.qt.io/organizer/the-qt-company-ics/
 https://www.qt.io/service-partners/

the Qt C++ Framework

• https://en.wikipedia.org/wiki/Qt_(software)

Qt versions

• Qt 5.9, LTS, http://doc.qt.io/qt-5/
• [qt-5-12-lts https://blog.qt.io/blog/2019/01/11/qt-5-12-lts-road-faster-qml-application-startup/, Qt 5.12]
• Qt 5.14

Qt Releases

• https://www.qt.io/blog/qt-6.0-beta-released
• https://blog.qt.io/blog/category/releases/

Qt Quick

• https://blog.qt.io/blog/tag/qt-quick-designer/
• https://www.ics.com/learning/training/implementing-modern-apps-qt-quick

Qt Quick 2

• https://blog.qt.io/blog/category/qt-quick-2/

Qt for Python

• https://doc.qt.io/qtforpython/?hsCtaTracking=fab9e910-0b90-4caa-b6d0-e202692b6f13%7Cb9e0be8d-1d85-4644-aaa2-41de4e6d37e3
• https://doc.qt.io/qtforpython/contents.html
• https://blog.qt.io/blog/category/qt-for-python/

Qt for Web Assembly

• https://blog.qt.io/blog/2018/05/22/qt-for-webassembly-examples/

Qt Creator

• https://en.wikipedia.org/wiki/Qt_Creator
• 4.10.0-beta2

Qt 3D Studio

• https://blog.qt.io/blog/category/qt-3d-studio/

Qt Design Studio

• https://en.wikipedia.org/wiki/Qt_Creator

Qt tools

• https://blog.qt.io/blog/2018/10/12/modern-qt-development-top-10-tools-using/

Qt and Yocto

• https://blog.qt.io/blog/2018/11/30/use-qt-lite-yocto/
• https://blog.qt.io/blog/2018/12/14/create-qbsps-yocto-builds/
• https://blog.qt.io/blog/category/yocto/
• http://code.qt.io/cgit/yocto/meta-boot2qt.git/
• https://blog.qt.io/blog/2018/11/30/qt-lite-updates-yocto-based-embedded-linux-users/
• https://www.yoctoproject.org/

Qt on Raspberry Pi

• https://www.raspberrypi.org/

Qt On Arduino

• http://grimaldi.univ-tln.fr/developpement-dapplications-arduino-avec-qtcreator.html
• https://forum.arduino.cc/index.php?topic=157883.0
• https://blog.jayway.com/2011/09/22/using-qtcreator-for-arduino-development/
• https://stackoverflow.com/questions/24415243/connect-arduino-with-qt

Qt on Beagle Board

• http://beagleboard.org/
• http://www.angstrom-distribution.org/
• https://www.yoctoproject.org/
• https://wiki.qt.io/Qt_on_the_BeagleBoard

Qt Third Party Libraries

• QXORM, object relational broker
• mqtt, IoT library publish-subscribe based onTCP/IP.

Building Qt

kits

• https://stackoverflow.com/questions/39092020/how-do-you-change-kits-in-qt-to-target-an-x86-machine

cmake

• https://doc.qt.io/qtcreator/creator-project-creating.html
• cmake, http://florian-goujeon.developpez.com/cours/cmake/initiation/
• https://cmake.org/Wiki/CMake/Tutorials/How_to_create_a_ProjectConfig.cmake_file
• Utiliser CMake pour compiler des projets Qt, http://qt-quarterly.developpez.com/qq-34/cmake/
• Settingup CMake, http://doc.qt.io/qtcreator/creator-project-cmake.html
• using Cmake BuildSystem http://doc.qt.io/qtcreator/creator-project-cmake.html
• https://cmake.org/cmake/help/v3.12/manual/cmake-qt.7.html
• https://stackoverflow.com/questions/49478625/qt-how-to-write-a-findxxx-cmake-file-for-a-certain-qt-library
• https://pastebin.com/Ems1tzSH
  • https://preshing.com/20170511/how-to-build-a-cmake-based-project/

• https://www.kdab.com/wp-content/uploads/stories/KDAB-whitepaper-CMake.pdf
• https://www.qt.io/blog/qt-6-build-system
• https://www.qt.io/blog/2019/08/07/technical-vision-qt-6
• https://wiki.qt.io/CMake_Port
• https://forum.qt.io/topic/117660/cmake-vs-qmake-which-is-better-to-use-for-new-project

sample projets:

* https://github.com/lxde/lxqt-build-tools/blob/master/CHANGELOG
* https://www.developpez.net/forums/d1048647/c-cpp/bibliotheques/qt/bases-donnees/qxorm/version-courante-qxorm-1-4-4-qxentityeditor-1-2-2-a/

qmake

specifying includes paths

* https://forum.qt.io/topic/31662/how-to-correctly-add-include-path

Qt Topics

C++

• CPlusPlus
  • Qt and C++ 11
  • Qt and C++ 14
  • Qt and C++ 17
  • Qt and C++ 20

type casting

• C++ type Casting
  • https://en.wikipedia.org/wiki/Type_conversion
  • https://en.wikipedia.org/wiki/Static_cast
  • https://en.wikipedia.org/wiki/Type_punning
  • https://fr.wikipedia.org/wiki/Dynamic_cast
  • https://openclassrooms.com/courses/c-les-conversions-de-types
  • https://stackoverflow.com/questions/28002/regular-cast-vs-static-cast-vs-dynamic-cast
• Qt Type Casting
  • https://stackoverflow.com/questions/4518163/how-does-qobject-cast-work

QMetaType & QVariant

• https://www.qt.io/blog/whats-new-in-qmetatype-qvariant

API Design

• API Design with QT, https://doc.qt.io/archives/qq/qq13-apis.html

Classes

• Qt 5.5, http://doc.qt.io/archives/qt-5.5/classes.html
• Qt 5.9, http://doc.qt.io/qt-5/classes.html

Layouting

• Trading Height for Width, Jasmine Blanchette, https://doc.qt.io/archives/qq/qq04-height-for-width.html

QThread

• QThread usage
  • how-to-use-qthread-properly, viking sofware
  • Threads_Events_QObjects/qt.io
  • threading-without-the-headache/qt.io
  • effective-threading-using-qt
• QThread and Future
  • qthreads& future on github

Containers

• https://doc.qt.io/archives/qq/qq19-containers.html
• https://en.wikipedia.org/wiki/Red%E2%80%93black_tree

QML & Qt Quick

See Also QML

• https://doc.qt.io/qt-5/qtqml-index.html
• https://qt.developpez.com/doc/4.7/qdeclarativeintroduction/
• http://tvaira.free.fr/dev/qt/cours-qml.pdf
• https://www.scriptol.fr/programmation/qml.php

Internationalization and localisation

Qt Internationalization

• https://blog.qt.io/blog/category/internationalization/
• http://doc.qt.io/qt-5/internationalization.html
• https://wiki.qt.io/QtInternationalization

• http://qt-quarterly.developpez.com/qq-03/le-chef-suedois/
• https://doc.qt.io/archives/qq/qq03-swedish-chef.html

• https://stackoverflow.com/questions/31533019/title-qt-how-to-translate-the-buttons-in-qmessagebox

• writing code for Qt
• writing code for Qt Quick/QML

Qt Localization

• https://wiki.qt.io/Locale_Support_in_Qt_5

Optimizing Qt

• qt oriented cpp static analysis, http://kdab.developpez.com/tutoriels/clazy/cpp-static-analysis/
• QString and QStringBuilder, http://blog.qt.io/blog/2011/06/13/string-concatenation-with-qstringbuilder/

Testing Qt

• https://qt.developpez.com/doc/4.7/qdeclarativeintroduction/
• Qt Test
  • Qt C++ API Test
  • QML Type Test
  • QtQuick Test

Deploying Qt apps

deploying plugins

on windows

• • the-windows-deployment-tool
  • windows-deployment
  • Deploy_an_Application_on_Windows
  • Deploy_an_Application_on_Windows french version
  • how to find dependencies using dependency walker tool ?

on Apple Platforms (macOS iOS, iPadOS, tvOS, watchOS)

• https://developer.apple.com/xcode/
• https://doc.qt.io/qt-5/macos.html
• building for Apple Platforms (macOS iOS, iPadOS, tvOS, watchOS) require Xcode to be installed but it Actually uses only Xcode command line tools so :
• how to build with Xcode command line only

on iOS

• https://doc.qt.io/qt-5/ios.html
• https://doc.qt.io/qt-5/examples-ios.html
• https://doc.qt.io/qt-5/porting-to-ios.html
• articles
  • https://medium.com/@shigmas/my-experience-building-an-app-for-android-and-ios-with-qt-5d4a63ab7d6
  • https://stackoverflow.com/questions/62667448/c-qt-application-on-android-and-ios
  • https://qt.developpez.com/actu/63087/Qt-5-2-Beta-propose-un-support-complet-d-Android-et-iOS-ainsi-que-des-modules-pour-l-acces-a-des-fonctionnalites-natives/
• videos
  • https://www.youtube.com/watch?v=hB4r-lL2H2k
  • https://www.youtube.com/watch?v=3o2Wo4YzlII
  • https://www.youtube.com/watch?v=Q9iYaPkRbEA

• on iPadOS
• on tvOS
• on watchOS

on GNU/Linux

• on Ubuntu

on Android

• https://doc.qt.io/qt-5/android.html
• https://doc.qt.io/qt-5/android-getting-started.html
• https://doc.qt.io/qt-5/examples-android.html
• videos
  • https://resources.qt.io/videos/getting-started-with-qt-for-android-qt-virtual-tech-con-2020-2
  • https://www.youtube.com/watch?v=suPeZ7XC1xk
  • https://www.youtube.com/watch?v=HfRgUQ19PgY
• articles
  • https://www.younup.fr/blog/une-nouvelle-version-de-qml-encore-plus-puissante
  • http://tvaira.free.fr/dev/qt-android/qt-android-installation.html
  • https://imikado.developpez.com/tutoriels/qml-javascript/ma-premiere-application-1/
  • https://medium.com/@shigmas/my-experience-building-an-app-for-android-and-ios-with-qt-5d4a63ab7d6

• on webOS
• on webOS TV
• on tizen
• on QNX

QT versions

QT 5.13.x

• Replace qMin, qMax with std::min, std::max , they were deprecated and now removed

Qt 5.15 LTS

• last 5 version of Qt before the 6th series
• https://wiki.qt.io/Qt_5.15_Release

Qt 6

• qt 6 release date

• https://wiki.qt.io/New_Features_in_Qt_6.0
• https://www.qt.io/product/qt6
• https://qt.developpez.com/actu/272806/Qt-6-une-vision-technique-proposee-par-Lars-Knoll-Cplusplus17-au-programme-Qt-Quick-pourrait-se-passer-de-JavaScript/
• https://www.infoq.com/news/2020/12/qt-6-released/

Qt 6.2

• will be the first usable Qt6.X release as it will be the most fulfilled in terms of supported components

Qt troubleshouting

installer issue

in case the Qt Installer is warning about a non-up-to-date licensing issue or an incompatible one , you need to delete license files

• on windows
  • "C:/Users/%USERNAME%/AppData/Roaming/Qt/qtlicenses.ini"
  • "C:/Users/%USERNAME%/AppData/Roaming/Qt/qtaccount.ini"
• on macOS
• on Ubuntu

then in the installer that is still warning at launch about licensing issues simply press next button to passe it QTBUG-60543

Qt Creator Issues

• QML QmlDesigner and QmlProfiler plugins not loaded
  • QTCREATORBUG-20354

Third Parties Libraries

• Inqlude.org, https://inqlude.org
  • a collection of librairies available for Qt

Open Source Project

• https://github.com/yevgeniy-logachev/QtAdMob
• https://github.com/Larpon/QtFirebase
• https://github.com/semlanik/qtprotobuf
• https://github.com/benlau/qsyncable

• https://github.com/toni1991/QtMqtt
• http://communi.github.io/
• https://github.com/qyvlik/HttpRequest
• https://github.com/qtrest/qtrest
• https://github.com/wang-bin/QtAV
• https://github.com/longwei/qmlvideo
• https://github.com/KDE/kamoso
• https://webvfx.rectalogic.com/
• https://github.com/Skycoder42/QtRestClient
• https://github.com/Skycoder42/QtJsonSerializer
• https://github.com/Instand/SolarSystem
• https://github.com/evonove/qnite

• https://github.com/mzafers/QtVlcMediaPlayer

https://github.com/mzafers/QtVlcMediaPlayer

• https://github.com/FalsinSoft/QtAndroidTools
• https://github.com/benlau/quickandroid
• https://github.com/benlau/androidnative.pri

• https://github.com/pbek/QOwnNotes

Blogs

KDAB

• https://www.kdab.com/
• https://github.com/KDAB

ICS

• https://www.ics.com/
• ICS on Github, https://github.com/search?utf8=%E2%9C%93&q=ICS&type=
• https://www.ics.com/tag/c
• https://www.ics.com/learning/training/design-patterns-c
• https://www.ics.com/learning/training/object-oriented-programming-c

Blogs

• C++, Qt, OpenGL, CUDA, http://guillaume.belz.free.fr/doku.php
• https://www.ionos.com/digitalguide/server/know-how/qt/

Qt Documentation

• https://doc.qt.io/

Qt Books

• https://www.ics.com/design-patterns
• http://www.allitebooks.com/game-programming-using-qt-beginners-guide/
• http://www.allitebooks.com/qt5-c-gui-programming-cookbook/
• http://www.allitebooks.com/introduction-to-design-patterns-in-c-with-qt-2nd-edition/
• http://www.allitebooks.com/introduction-to-python-programming-and-developing-gui-applications-with-pyqt/

Qt webinars

• https://resources.qt.io/

Qt sample codes

• Qt_Based_Games
• qxmledit, full XML file editor

Qt Tutorials

• https://openclassrooms.com/courses/programmez-avec-le-langage-c/introduction-a-qt
• https://www.youtube.com/watch?v=6KtOzh0StTc
• https://www.pluralsight.com/courses/introduction-qt-cplusplus-framework?aid=7010a000002BWqGAAW&promo=&oid=&utm_source=google&utm_medium=ppc&utm_campaign=EMEA_Dynamic&utm_content=&utm_term=&gclid=CKDY6an20NQCFe4Q0wodhAQAHQ
• http://docplayer.fr/29518644-Interface-utilisateur-graphique-gui.html

• https://www.cleanqt.io/blog/crash-course-in-qt-for-c%2B%2B-developers,-part-1
• https://www.cleanqt.io/blog/crash-course-in-qt-for-c%2B%2B-developers,-part-2
• https://www.cleanqt.io/blog/crash-course-in-qt-for-c%2B%2B-developers,-part-3
• https://www.cleanqt.io/blog/crash-course-in-qt-for-c%2B%2B-developers,-part-4
• https://www.cleanqt.io/blog/crash-course-in-qt-for-c%2B%2B-developers,-part-5
• https://www.cleanqt.io/blog/crash-course-in-qt-for-c%2B%2B-developers,-part-6
• https://www.cleanqt.io/blog/crash-course-in-qt-for-c%2B%2B-developers,-part-7