How to Download and Install Qt 6 on Ubuntu
Qt is a cross-platform software development framework that enables you to create applications and user interfaces for desktop, mobile, embedded, and web platforms. Qt 6 is the latest major release of Qt that provides many new features, improvements, and enhancements over the previous version, Qt 5.
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In this article, you will learn how to download and install Qt 6 on Ubuntu, one of the most popular Linux distributions. You will also learn about the benefits of using Qt 6, how to compare it with Qt 5, how to verify your installation, and how to find more resources to help you with your Qt development.
What is Qt 6 and why use it?
Qt 6 is the productivity platform for the future. It lets you develop applications with intuitive user interfaces for multiple devices and platforms, faster than ever before. Some of the key advantages of using Qt 6 are:
It leverages C++17 features to provide a modern and expressive API.
It offers a next-generation QML language that is leaner, yet more powerful, for rapid UI creation.
It supports a new graphics architecture that enables hardware-accelerated rendering for Vulkan, Metal, and DirectX technologies.
It unifies 2D and 3D for Qt Quick, allowing you to create stunning visual effects and animations.
It adopts CMake as the default build system, making it easier to integrate with other tools and libraries.
It includes many improvements throughout the framework, such as enhanced network security, multimedia capabilities, internationalization support, and more.
Qt 6 features and benefits
Qt 6 provides a rich set of features and modules that cover various aspects of application development, such as:
Qt Core: The core module that includes libraries and APIs for the meta-object system, the property system, the object model, etc.
Qt GUI: The module that provides classes for windowing system integration, 2D and 3D graphics, imaging, fonts, and text.
Qt QML: The module that provides a framework for developing applications and libraries with the QML language.
Qt Quick: The module that provides a declarative framework for building highly dynamic applications with custom user interfaces.
Qt Multimedia: The module that includes classes for audio, video, radio, and camera functionality.
Qt Network: The module that provides a set of APIs for programming applications that use TCP/IP.
Qt Quick Dialogs: The module that provides types for creating and interacting with system dialogs from a Qt Quick application.
Qt Quick Layouts: The module that provides layouts that are used to arrange Qt Quick items in the user interface.
Qt Quick Controls: The module that provides lightweight QML types for creating performant user interfaces for desktop, embedded, and mobile devices.
And many more...
Qt 6 vs Qt 5 comparison
Qt 6 is a continuation of the Qt 5 series and should not be disruptive for users to migrate on. However, some changes were inevitable to make Qt a better framework. To make it easier to port to Qt 6.0, there is a that [assistant](#search_web("Porting guide Qt 6")) "web_search_results": ["title": "Porting from Qt 5 to Qt 6 ] continues the article: explains the most common issues that are likely to affect applications. Some of the main differences between Qt 6 and Qt 5 are:
Qt 6 requires C++17 or later, while Qt 5 supported C++11 or later.
Qt 6 uses CMake as the default build system, while Qt 5 used qmake.
Qt 6 has a modularized structure, with some modules being split, merged, or removed.
Qt 6 has a redesigned graphics stack, with a new abstraction layer for graphics APIs and a unified rendering pipeline for 2D and 3D.
Qt 6 has a new QML engine, with improved performance, syntax, and features.
Qt 6 has some API changes and deprecations, such as renaming some classes and methods, removing some features, and changing some behaviors.
To help you with the migration process, Qt provides tools such as that can automate some of the tasks and provide guidance on how to resolve issues.
How to get Qt 6 for Ubuntu
The easiest way to get Qt 6 for Ubuntu is to download the online installer from the Qt website. The online installer allows you to select the components you want to install, such as different versions of Qt, tools, add-ons, and documentation. You can also use the online installer to update your existing Qt installation or add new components later.
Download the online installer from Qt website
To download the online installer, follow these steps:
Go to the and click on the link for Linux (64-bit).
Save the file qt-unified-linux-x64-online.run to your preferred location.
Open a terminal and navigate to the directory where you saved the file.
Make the file executable by running the command: chmod +x qt-unified-linux-x64-online.run
Run the file by running the command: ./qt-unified-linux-x64-online.run
The online installer will launch and guide you through the installation process.
Install the required dependencies for Qt development
Before you can use Qt on Ubuntu, you need to install some dependencies that are required for building and running Qt applications. To install them, run the following command in a terminal:
sudo apt-get install build-essential libgl1-mesa-dev libxkbcommon-x11-0
This will install the essential packages for compiling C++ code, the OpenGL library for graphics rendering, and the XKB library for keyboard input.
How to download and install Qt 6.5 for Linux/X11
Qt 6.5 online installer for Ubuntu 20.04
Qt for Linux/X11 - Building from Source
Qt for Linux/X11 - Deployment and Specific Issues
Qt 6.5 offline installer for Ubuntu 20.04
Qt 6.5 source packages for Linux/X11
Qt Creator and Qt source packages offline installers
Download Qt 6.5 for Linux/X11 with MSVC 2019 64-bit
Download Qt 6.5 for Linux/X11 with GCC 10
Download Qt 6.5 for Linux/X11 with GCC 9
Download Qt 6.5 for Linux/X11 with openSUSE 15.4
Download Qt 6.5 for Linux/X11 with SUSE Linux Enterprise Server 15 SP4
Download Qt 6.5 for Linux/X11 with Red Hat 8.4
Download Qt 6.5 for mobile development on Linux/X11
Download Qt 6.5 for embedded development on Linux/X11
Download Qt 6.5 for Android Automotive on Linux/X11
Download Qt 6.5 for Automation on Linux/X11
Download Qt 6.5 for MCUs on Linux/X11
Download Qt 6.5 documentation for Linux/X11
Download Qt 6.5 examples and tutorials for Linux/X11
How to update Qt 6.4 to Qt 6.5 on Ubuntu 20.04
How to uninstall Qt 6.4 from Ubuntu 20.04
How to use the Qt Maintenance Tool on Ubuntu 20.04
How to create a Qt account and manage licenses on Ubuntu 20.04
How to choose the right Qt license for your project on Ubuntu 20.04
How to configure Qt for different Linux platforms on Ubuntu 20.04
How to use OpenGL libraries and headers with Qt on Ubuntu 20.04
How to use C++ compiler, debugger, make, and other development tools with Qt on Ubuntu 20.04
How to run Qt applications on one or several desktop platforms, mobile or embedded devices, or MCUs from Ubuntu 20.04
How to run Qt applications on Android devices from Ubuntu 20.04
How to run Qt applications on iOS devices from Ubuntu 20.04
How to run Qt applications on embedded devices from Ubuntu 20.04
How to run Qt applications on Android Automotive from Ubuntu 20.04
How to run Qt applications on Automation devices from Ubuntu 20.04
How to run Qt applications on MCUs from Ubuntu 20.04
How to use the Qt Overviews, Reference Pages, Forums, and Wikis on Ubuntu 20.04
How to troubleshoot common issues with Qt on Ubuntu 20.04
How to report bugs and request features for Qt on Ubuntu 20.04
How to contribute code and documentation to Qt on Ubuntu 20.04
How to join the Qt community and get involved in the development process on Ubuntu 20.04
How to learn more about the latest features and improvements in Qt 6.5 on Ubuntu 20.04
How to compare the performance and compatibility of Qt versions on Ubuntu 20.04
How to migrate your existing projects from older versions of Qt to Qt 6.5 on Ubuntu 20.04
How to use the new modules and tools in Qt 6.5 on Ubuntu 20.04
How to create cross-platform GUI applications with QML and C++ in Qt 6.5 on Ubuntu
Run the installer and select the components you need
After you have downloaded and run the online installer, you will see a welcome screen that asks you to log in with your Qt account or create one if you don't have one already. You need a Qt account to access the open source version of Qt or to manage your commercial licenses.
After you have logged in, you will see a screen that lets you choose which components you want to install. You can expand each category and select or deselect individual items. For example, if you only want to install Qt 6.2.0 for desktop development, you can select:
Qt > Developer and Designer Tools > CMake
Qt > Developer and Designer Tools > Qt Creator
Qt > Developer and Designer Tools > Debugging Tools
Qt > Qt 6.2.0 > Desktop gcc 64-bit
Qt > Qt 6.2.0 > Sources
You can also select other components that you may need, such as additional modules, add-ons, examples, or documentation. The installer will show you how much disk space is required for the selected components and the download size. You can also change the installation directory if you want.
Once you have selected the components you want, click on Next to proceed. The installer will download and install the components. This may take some time depending on your internet speed and the number of components you have chosen. You can monitor the progress and see the details of each component being installed.
When the installation is complete, you will see a confirmation screen that shows you the summary of the installation. You can also launch Qt Creator from this screen or view the readme files for each component. Click on Finish to exit the installer.
How to verify your Qt 6 installation
After you have installed Qt 6 on Ubuntu, you can verify that it works correctly by launching Qt Creator, creating a new project, building and running a simple Qt application, and checking the Qt version and platform information.
Launch Qt Creator IDE and create a new project
Qt Creator is an integrated development environment (IDE) that provides tools for creating, editing, debugging, and testing Qt applications. You can launch Qt Creator from the application menu or by running the command:
qtcreator
When you launch Qt Creator for the first time, you will see a welcome screen that shows you some options to get started. You can open an existing project, create a new project, or learn more about Qt development.
To create a new project, click on New Project and select Application > Qt Widgets Application from the list of templates. Click on Choose to proceed.
You will see a wizard that guides you through the steps of creating a new project. You can enter the name, location, and version control settings for your project. Click on Next to continue.
You will see a screen that lets you select the kit for your project. A kit consists of a set of tools and settings that define how to build and run your application for a specific target platform. You should see Desktop Qt 6.2.0 GCC 64bit as one of the available kits. Select it and click on Next.
You will see a screen that lets you configure the class for your main window. You can enter the name, base class, header file, source file, and UI file for your class. You can also choose to add a constructor, a destructor, or comments to your class. Click on Next to continue.
You will see a screen that lets you review the project settings and files that will be created. You can also modify some advanced settings such as CMake options or code style. Click on Finish to create your project.
Build and run a simple Qt application
After you have created your project, you will see the main window of Qt Creator with your project files open in the editor. You can edit your code, design your user interface, or add other resources to your project.
To build your project, click on Build > Build Project from the menu bar or press Ctrl+B. You will see the output of the build process in the bottom pane of Qt Creator. You should see no errors or warnings if everything went well.
To run your project, click on Build > Run from the menu bar or press Ctrl+R. You will see your application launch in a separate window. You should see a simple window with a menu bar, a status bar, and a central widget.
Check the Qt version and platform information
To check which version of Qt you are using and which platform you are running on, you can use some methods from the classes. For example, you can add the following code to your main.cpp file:
int main(int argc, char *argv[]) QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling); QApplication app(argc, argv); MainWindow w; w.show(); qDebug()
This will print out the Qt version and platform name to the console output when you run your application. For example, you may see something like this:
Qt version: 6.2.0 Platform name: xcb
How to learn more about Qt 6
If you want to learn more about Qt 6 and how to use it for developing applications, there are many resources available online that can help you. Some of the best sources of information are:
Explore the Qt 6 documentation and tutorials
The Qt 6 documentation is a comprehensive and up-to-date reference for all aspects of Qt development. You can find the documentation online at or offline in your Qt installation directory. The documentation includes:
An overview of Qt 6 and its modules, features, and tools.
A guide on how to install, configure, and use Qt 6 on different platforms.
A tutorial on how to create your first Qt application and learn the basics of Qt development.
A reference for all the classes, methods, properties, enums, and signals that Qt 6 provides.
A collection of examples and demos that show how to use Qt 6 for various scenarios and tasks.
A manual on how to design, develop, test, debug, and deploy Qt applications.
A guide on how to port your existing Qt 5 applications to Qt 6.
And much more...
Join the Qt community and forums
The Qt community is a vibrant and active group of developers, users, and enthusiasts who share their knowledge, experience, and feedback about Qt. You can join the Qt community and interact with other members through various channels, such as:
The , where you can ask questions, answer queries, or discuss topics related to Qt development.
The , where you can read the latest news, announcements, and articles from the Qt team and contributors.
The , where you can subscribe to receive updates and notifications about Qt development.
The , where you can chat with other Qt developers in real time.
The , where you can follow, like, or comment on the posts from the Qt team and community.
Contact Qt support or services for assistance
If you need professional help or guidance with your Qt development, you can contact the Qt support or services team. They can provide you with:
Technical support: You can get access to expert advice, troubleshooting, bug fixes, and patches for your Qt issues.
Consulting services: You can get assistance with your project planning, architecture design, code review, performance optimization, or custom development.
Training services: You can get access to online or on-site courses that teach you the skills and best practices for developing with Qt.
Licensing services: You can get advice on choosing the right license for your Qt project, whether it is open source or commercial.
Conclusion
Qt 6 is a powerful and versatile framework that enables you to create applications and user interfaces for multiple platforms and devices. In this article, you learned how to download and install Qt 6 on Ubuntu, one of the most popular Linux distributions. You also learned about the benefits of using Qt 6, how to compare it with Qt 5, how to verify your installation, and how to find more resources to help you with your Qt development. We hope that this article has given you a good introduction to Qt 6 and inspired you to start creating your own amazing applications with it.
FAQs
Here are some frequently asked questions about Qt 6 and Ubuntu:
Q: Can I use Qt 6 on other Linux distributions?
A: Yes, you can use Qt 6 on other Linux distributions that meet the for more information on how to install Qt 6 on different Linux distributions.
Q: Can I use other IDEs or editors for developing with Qt 6?
A: Yes, you can use other IDEs or editors for developing with Qt 6. However, we recommend using Qt Creator as it provides many features and tools that are tailored for Qt development. You can also integrate Qt Creator with other IDEs or editors if you prefer. You can check the for more information on how to use and customize Qt Creator.
Q: How can I update my Qt 6 installation?
A: You can update your Qt 6 installation by using the online installer that you used to install Qt 6. You can launch the online installer from the application menu or by running the command: qt-unified-linux-x64-online.run
You will see a screen that shows you the available updates for your Qt installation. You can select the components you want to update and click on Next to proceed. The installer will download and install the updates for you. Q: How can I uninstall Qt 6 from Ubuntu?
A: You can uninstall Qt 6 from Ubuntu by using the online installer that you used to install Qt 6. You can launch the online installer from the application menu or by running the command:
qt-unified-linux-x64-online.run
You will see a screen that shows you the installed components for your Qt installation. You can deselect the components you want to uninstall and click on Next to proceed. The installer will remove the components for you. Q: Where can I find more tutorials and examples for Qt 6?
A: You can find more tutorials and examples for Qt 6 in the Qt documentation, the Qt blog, and the Qt YouTube channel. Here are some links to get you started:
: A tutorial that shows you how to create a simple Qt application and learn the basics of Qt development.
: A collection of examples and tutorials that show you how to use various features and modules of Qt 6.
: A series of blog posts that introduce and explain the new features and improvements in Qt 6.
: A playlist of videos that showcase and demonstrate the capabilities and benefits of Qt 6.
Q: How can I contribute to Qt 6 development?
A: Qt 6 is an open source project that welcomes contributions from anyone who is interested in improving it. You can contribute to Qt 6 development by reporting bugs, submitting patches, providing feedback, writing documentation, creating examples, or spreading the word. You can check the for more information on how to get involved. 44f88ac181
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