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Subnavigation The Qt framework contains a comprehensive set of highly intuitive and modularized C++ library classes and is loaded with APIs to simplify your application development. Qt produces highly readable, easily maintainable and reusable code with high runtime performance and small footprint – and it's cross-platform. Try Qt for Free Buy Qt Qt Essentials define the foundation of Qt on all platforms. They are available on all supported development platforms and on the tested target platforms. Browse all Qt Essentials Core non-graphical classes used by other modules. Base classes for graphical user interface components. Includes OpenGL. Classes for audio, video, radio and camera functionality. Classes to make network programming easier and more portable. A declarative framework for building highly dynamic applications with custom user interfaces. Classes for database integration using SQL. These special-purpose modules may only be available on some development platform. Many add-on modules are either feature-complete and exist for backward compatibility or are only applicable to certain platforms. Browse all Qt Add-Ons OpenGL support classes. Deprecated in favor of the QOpenGL classes in the Qt GUI module. Provides a framework to develop a Wayland compositor. Provides access to sensor hardware and motion gesture recognition. Displays web content in a QML application by using APIs native to the platform, without the need to include a full web browser stack. Provides a UI rendering component that can be used to render safety-critical items, such as warning indicators, in functional safety systems. Provides classes and tools for creating state machines from SCXML files and embedding them in applications. The Qt Group prioritizes addressing potential vulnerability threats and security concerns in its products. With its broad cross-platform applicability and extensive API, the Qt framework is susceptible to cyber risks on diverse fronts. Furthermore, Qt is developed as a open source project, requiring vulnerability report analysis by designated staff members and external contributors. Since its inception, the Qt Group actively participates in the relevant steering groups and takes prompt action upon vulnerability reports. Vulnerability reports are governed by specific procedures outlined in the Qt Project Security Policy. Download Qt
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