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.Written in, (, ),andWebsiteQt (pronounced 'cute' ) is a for creating as well as that run on various software and hardware platforms such as, or with little or no change in the underlying codebase while still being a native application with native capabilities and speed. Qt is currently being developed by, a publicly listed company, and the under, involving individual developers and organizations working to advance Qt. Qt is available under both commercial licenses and open source 2.0, GPL 3.0, and 3.0 licenses. Contents.Purposes and abilities Qt is used for developing (GUIs) and multi-platform that run on all major desktop platforms and most mobile or embedded platforms.Most GUI programs created with Qt have a native-looking interface, in which case Qt is classified as a. Also non-GUI programs can be developed, such as tools and consoles for servers. An example of such a non-GUI program using Qt is the Cutelyst.Qt supports various compilers, including the C compiler and the suite and has extensive support. Qt also provides, that includes a called that allows using to provide the logic.
With Qt Quick, rapid application development for mobile devices became possible, while logic can still be written with native code as well to achieve the best possible performance.Other features include database access, parsing, parsing, management and network support.Qt releases. Example of Qt usage in Linux-based systems Qt concepts Qt is built on these key concepts:Complete abstraction of the GUI When first released, Qt used its own paint engine and controls, emulating the look of the different platforms it runs on when it drew its widgets. This made the porting work easier because very few classes in Qt depended really on the target platform; however, this occasionally led to slight discrepancies where that emulation was imperfect.
Recent versions of Qt use the native style APIs of the different platforms, on platforms that have a native widget set, to query metrics and draw most controls, and do not suffer from such issues as often. On some platforms (such as MeeGo and KDE) Qt is the native API. Some other portable graphical toolkits have made different design decisions; for example, uses the toolkits of the target platform for its implementations. Signals and slots A language construct introduced in for communication between objects which makes it easy to implement the while avoiding. The concept is that GUI can send signals containing event information which can be received by other controls using special functions known as slots. Compiler The compiler, termed moc, is a tool that is run on the sources of a Qt program.
It interprets certain macros from the C code as annotations, and uses them to with meta information about the classes used in the program. This meta information is used by Qt to: signals and slots, and asynchronous function calls. Language bindings Qt can be used in several other like Python, Javascript, C# or Rust via, see. See also: Qt modules Starting with Qt 4.0 the framework was split into individual modules. With Qt 5.0 the architecture was modularized even further.
Qt is now split into essential and add-on modules. Qt essentials ModuleDescriptionQt CoreThe only required Qt module, containing classes used by other modules, including the meta-object system, concurrency and threading, containers, event system, plugins and I/O facilities.Qt GUIThe central GUI module. In Qt 5 this module now depends on, but no longer contains any widget classes.Qt WidgetsContains classes for classic widget based GUI applications and the QSceneGraph classes. Was split off from QtGui in Qt 5.Qt QMLModule for and languages.Qt QuickThe module for GUI application written using QML2.Qt Quick ControlsWidget like controls for Qt Quick intended mainly for desktop applications.Qt Quick LayoutsLayouts for arranging items in Qt Quick.Qt NetworkNetwork abstraction layer.
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Complete with TCP, UDP, and since Qt 5.3 support.Qt MultimediaClasses for audio, video, radio and camera functionality.Qt Multimedia WidgetsThe widgets from Qt Multimedia.Qt SQLContains classes for database integration using.Qt WebEngineA new set of Qt Widget and QML webview APIs based on.Qt TestClasses for unit testing Qt applications and libraries.Qt add-ons ModuleDescriptionActive QtClasses for applications which use.Qt BluetoothClasses accessing hardware.Qt D-BusClasses for IPC using the protocol.Qt NFCClasses accessing hardware. Only officially supported on BlackBerry hardware so far (or N9 in the MeeGo port).Qt OpenGLLegacy module containing the classes from Qt 4.
In Qt 5 the similar functionality in Qt GUI is recommended.Qt LocationClasses for accessing and other location services and for mapping and navigation. Split off from the Qt 4 Mobility module of Qt Location. Supported on Android, BlackBerry, iOS, Linux (using ), Windows and Sailfish OS.Legacy module for scripting Qt application using ECMAScript/. In Qt 5, using similar classes in Qt QML is recommended.Qt SensorsClasses for accessing various mobile hardware sensors. Used to be part of Qt Mobile in Qt 4. Supported on Android, BlackBerry, iOS, WinRT, Mer and Linux.Qt Serial PortClasses for access to hardware and virtual serial ports. Supported on Windows, Linux and macOS.Qt WebChannelProvides access to Qt objects to HTML/Js over.Qt WebKitQt's implementation and API.Qt WebKit WidgetsThe widget API for Qt WebKitQt WebSocketsProvides a implementation.Qt XMLLegacy module containing classes for and style APIs.
Replaced with QXmlStreamReader and QXmlStreamWriter classes in Qt Core.Qt XML PatternsSupport for, and validation.Editions There are four editions of Qt available: Community, Indie Mobile, Professional and Enterprise. The Community version is under the open source licenses, while the Indie Mobile, Professional and Enterprise versions, which contain additional functionality and libraries, e.g. Enterprise Controls are commercially sold by The Qt Company.Supported platforms. Main article:Qt works on many different platforms; the following are officially supported:PlatformDescriptionLinux/UnixX11Qt for ;, and have community support.WaylandQt for (e.g. Uses that, as it doesn't have X11). Qt applications can switch between graphical backends like X and Wayland at with the -platform command line option.
This allows a seamless transition of Qt applications from X11 to Wayland.AndroidQt for (formerly known as Necessitas).Embedded LinuxQt for embedded platforms:, etc. Exists as multiple platforms depending on display technology., and EGLFS ( Full Screen).Microsoft platformsWindowsQt for Microsoft, andWindows RTSupport for -based apps andApple platformsmacOSQt for Apple; supports applications oniOSQt for platforms (, )Other embedded platformsIntegrityQt forQNXQt forVxWorksQt for.After Nokia opened the Qt source code to the community on various ports appeared. There are also some ports of Qt that may be available, but are not supported anymore. These platforms are listed in. See also there for current community support for other lesser known platforms, such as.Licensing Qt is available under the following free software licenses:, and (with Qt special exception). Note that some modules are available only under a GPL license, which means that applications which statically link to these modules need to comply with that license.In addition, Qt has always been available under a commercial license, like the, that allows developing proprietary applications with no restrictions on licensing.Qt tools.
See also:Qt comes with its own set of tools to ease cross-platform development, which can otherwise be cumbersome due to different set of development tools.is a cross-platform for C and QML. Main article:Qt 5 was officially released on 19 December 2012. This new version marked a major change in the platform, with hardware-accelerated graphics, and playing a major role. The traditional C-only QWidgets continued to be supported, but did not benefit from the performance improvements available through the new architecture. Qt 5 brings significant improvements to the speed and ease of developing user interfaces.Framework development of Qt 5 moved to open governance at qt-project.org, which made it possible for developers outside Digia to submit patches for review. Qt contributors.
Bocklage-Ryannel, Juergen; Thelin, Johan (12 May 2015). (1st ed.). Blanchette, Jasmin; Summerfield, Mark (14 February 2008). (2nd ed.).
Summerfield, Mark (23 August 2010). (1st ed.). Fitzek, Frank H. P.; Mikkonen, Tommi; Torp, Tony (17 May 2010). Archived from on 19 December 2009. Summerfield, Mark (28 October 2007). (1st ed.).
Molkentin, Daniel (19 July 2007). (1st ed.). Thelin, Johan (3 August 2007).
(1st ed.). Dalheimer, Matthias (January 2002). (2nd ed.).
Online Qt Compiler
Ezust, Alan; Ezust, Paul (10 September 2006). (2nd ed.).References.
Qt Compiler Download
I want to run a lengthy computation on a cluster computer. The cluster computer has a Linux OS and a compiler but no GUI, just a command line. The problem is that I cannot use the sudo command to install additional libraries.My program is in C and uses some Qt stuff such as QString. It also uses GSL and Eigen libraries.
I am especially worried about the Qt libraries, since the installation seems and the libraries seem very large.I am making all my development on an Ubuntu OS, but my knowledge of Linux is minimal.What do you suggest? Have you ever installed Qt 'locally'? I can also attempt to refactor Qt out of my program using std::string and standard C equivalents where possible.