Qt Quick is a

free software Free software, libre software, libreware sometimes known as freedom-respecting software is computer software distributed open-source license, under terms that allow users to run the software for any purpose as well as to study, change, distribut ...

application framework In computer programming, an application framework consists of a software framework used by software developers to implement the standard structure of application software. Application frameworks became popular with the rise of graphical user inte ...

developed and maintained by the

Qt Project The Qt Project is an open collaboration effort to coordinate the development of the Qt software framework. Initially founded by Nokia in 2011, the project is now led by The Qt Company. History Haavard Nord and Eirik Chambe-Eng (the origina ...

within the Qt framework. It provides a way of building custom, highly dynamic

graphical user interface A graphical user interface, or GUI, is a form of user interface that allows user (computing), users to human–computer interaction, interact with electronic devices through Graphics, graphical icon (computing), icons and visual indicators such ...

s with fluid transitions and effects, which are becoming more common especially in

mobile device A mobile device or handheld device is a computer small enough to hold and operate in hand. Mobile devices are typically battery-powered and possess a flat-panel display and one or more built-in input devices, such as a touchscreen or keypad. ...

s. Qt Quick includes a declarative

scripting language In computing, a script is a relatively short and simple set of instructions that typically automation, automate an otherwise manual process. The act of writing a script is called scripting. A scripting language or script language is a programming ...

called QML. Qt Declarative is a runtime interpreter that reads the ''Qt declarative user interface definition'', QML data, and displays the UI that it describes. The QML syntax allows using

JavaScript JavaScript (), often abbreviated as JS, is a programming language and core technology of the World Wide Web, alongside HTML and CSS. Ninety-nine percent of websites use JavaScript on the client side for webpage behavior. Web browsers have ...

to provide the logic, and it is often used for this purpose. It is not the only way, however: logic can be written with native code as well. Qt Quick and QML are officially supported in Qt 4.7 (with

Qt Creator Qt Creator is a cross-platform C++, JavaScript, Python and QML integrated development environment (IDE) which simplifies GUI application development. It is part of the SDK for the Qt GUI application development framework and uses the Q ...

2.1), and it is a commercial option in mobile applications when Qt 4.7 is available for deployment in

Symbian Symbian is a discontinued mobile operating system (OS) and computing platform designed for smartphones. It was originally developed as a proprietary software OS for personal digital assistants in 1998 by the Symbian Ltd. consortium. Symbian OS ...

and

Maemo Maemo is a Linux-based software platform originally developed by Nokia, now developed by the Free software movement, community, for smartphones and Internet tablets. The platform comprises both the Maemo operating system and Software development ...

and

MeeGo MeeGo is a discontinued Linux distribution hosted by the Linux Foundation, using source code from the operating systems Moblin (produced by Intel) and Maemo (produced by Nokia). MeeGo was primarily targeted at mobile devices and information app ...

devices. It is also the native language of

Ubuntu Touch Ubuntu Touch is a mobile version of the Ubuntu operating system, developed by the UBports community. Its user interface is written in Qt, and is designed primarily for touchscreen mobile devices such as smartphones and tablet computers. Howev ...

Version history

See also

References

External links