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22 hours ago · Tetris (Russian: Тетрис) is a puzzle video game created in 1985 by Alexey Pajitnov, a Soviet software engineer. It has been published by several companies for multiple platforms, most prominently during a dispute over the appropriation of the rights in the late 1980s.
- Alexey Pajitnov
Alexey Leonidovich Pajitnov (born April 16, 1955) is a...
- List of Tetris Variants
A keychain Tetris game with 8 game modes. A port for Windows...
- Tetris (Film)
Tetris is a 2023 biographical thriller film based on true...
- Tetris Effect
Tetris Effect is a block-dropping arcade-styled puzzle video...
- Alexey Pajitnov
22 hours ago · British rock band Queen have released 15 studio albums, 10 live albums, 16 compilation albums, 2 soundtrack albums, 2 extended plays, 73 singles, and 7 promotional singles. Queen was formed in London by Freddie Mercury (vocals and keyboards), Brian May (guitar), and Roger Taylor (drums), and in 1971, John Deacon (bassist) became a member.
22 hours ago · Google's rise was largely due to a patented algorithm called PageRank which helps rank web pages that match a given search string. When Google was a Stanford research project, it was nicknamed BackRub because the technology checks backlinks to determine a site's importance.
22 hours ago · The tiger has fairly robust teeth and its somewhat curved canines are the longest in the cat family at 6.4–7.6 cm (2.5–3.0 in). The tiger is the largest living felid species, with the Siberian and Bengal tigers being the largest.
- Purposes and Abilities
- Qt Releases
- Qt in Use
- Qt Software Architecture
- History of Qt
- See Also
Qt is used for developing graphical user interfaces (GUIs) and multi-platform applications 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 widget toolkit. Non-GUI programs can also be developed, such as command-line t...
The latest version is Qt 6.0, which was released on 8 December 2020. The current long-term support(LTS) version is Qt 5.15 LTS. The Qt Company is moving Qt 5.15 To Its Commercial-Only LTS Phase starting on Jan 5th 2021. Also Qt 5.12 is LTS versionActual Version is 5.12.10. The initial release of Qt software was on 20 May 1995.
In 2017, the Qt Company estimated a community of about 1 million developers worldwidein over 70 industries.
Qt concepts
Qt is built on these key concepts: Complete abstraction of the GUI 1. 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 really depended 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 platf...
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-onmodules.
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 Controlsare commercially sold by The Qt Company.
Early developments
In the summer of 1990, Haavard Nord and Eirik Chambe-Eng (the original developers of Qt and the CEO and President, respectively, of Trolltech) were working together on a database application for ultrasound images written in C++ and running on Mac OS, Unix, and Microsoft Windows.They began development of "Qt" in 1991, three years before the company was incorporated as Quasar Technologies, then changed the name to Troll Tech and then to Trolltech. The toolkit was called Qt because the letter Q...
Becoming free software–friendly
With the release of version 2.0 of the toolkit, the license was changed to the Q Public License (QPL), a free software license, but one regarded by the Free Software Foundation as incompatible with the GPL. Compromises were sought between KDE and Trolltech whereby Qt would not be able to fall under a more restrictive license than the QPL, even if Trolltech was bought out or went bankrupt. This led to the creation of the KDE Free Qt foundation, which guarantees that Qt would fall under a BSD-s...
Acquisition by Nokia
Nokiaacquired Trolltech ASA on 17 June 2008 and changed the name first to Qt Software, then to Qt Development Frameworks. Nokia focused on turning Qt into the main development platform for its devices, including a port to the Symbian S60 platform. Version 1.0 of the Nokia Qt SDK was released on 23 June 2010. The source code was made available over Gitorious, a community oriented gitsource code repository, with a goal of creating a broader community using and improving Qt. On 14 January 2009,...
22 hours ago · Origin and development Etymology The word 'Pali' is used as a name for the language of the Theravada canon. The word seems to have its origins in commentarial traditions, wherein the Pāli (in the sense of the line of original text quoted) was distinguished from the commentary or vernacular translation that followed it in the manuscript. K. R. Norman suggests that its emergence was based on a ...
22 hours ago · Operation Barbarossa (German: Unternehmen Barbarossa; Russian: Операция Барбаросса, romanized: Operatsiya Barbarossa) was the invasion of the Soviet Union by Nazi Germany and many of its Axis allies, starting on Sunday, 22 June 1941, during the Second World War.
