This led to the creation of the KDE Free Qt foundation, 126 which guarantees that Qt would fall under a BSD-style license should no freeopen source version of Qt be released during 12 months. 127 128.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 tools and consoles for servers.An example of such a non-GUI program using Qt is the Cutelyst web framework.
Qt also provides Qt Quick, that includes a declarative scripting language called QML that allows using JavaScript to provide the logic. Qt 4.8 For Nokia S60V5 Code As WellWith 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. 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 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. Qt 4.8 For Nokia S60V5 Portable Graphical ToolkitsSome other portable graphical toolkits have made different design decisions; for example, wxWidgets uses the toolkits of the target platform for its implementations. The concept is that GUI widgets can send signals containing event information which can be received by other controls using special functions known as slots. It interprets certain macros from the C code as annotations, and uses them to generate added C code with meta information about the classes used in the program. This meta information is used by Qt to provide programming features not available natively in C: signals and slots, introspection and asynchronous function calls. The Ring programming language includes Qt in the standard library. In Qt 5 this module now depends on OpenGL, but no longer contains any widget classes. Only officially supported on BlackBerry hardware so far (or N9 in the MeeGo port). Supported on Android, BlackBerry, iOS, Linux (using GeoClue ), Windows and Sailfish OS. Replaced with QXmlStreamReader and QXmlStreamWriter classes in Qt Core. There are also some ports of Qt that may be available, but are not supported anymore. These platforms are listed in List of platforms supported by Qt. See also there for current community support for other lesser known platforms, such as SailfishOS. Qt Designer s GUI layoutdesign functionality is integrated into the IDE, although Qt Designer can still be started as a standalone tool. There are other tools available in Qt, including the Qt Designer interface builder and the Qt Assistant help browser (which are both embedded in Qt Creator), the Qt Linguist translation tool, uic (user interface compiler), and moc (Meta-Object Compiler). Trolltech used this license until version 1.45. Qt 4.8 For Nokia S60V5 Software Movement WorriedAs it was based on Qt, many people in the free software movement worried that an essential piece of one of their major operating systems would be proprietary. 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.
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