All C++ APIs per Module▲
This page lists the C++ APIs in Qt. The All Modules page contains a list of all Qt modules.
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Qt 5 Core Compatibility C++ Classes: Contains the Qt 5 Core APIs removed from Qt 6.
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Qt Concurrent C++ Classes: The Qt Concurrent module contains functionality to support concurrent execution of program code.
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Qt Core C++ Classes: Provides core non-GUI functionality.
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Qt D-Bus C++ Classes: The Qt D-Bus module is a Unix-only library that you can use to perform Inter-Process Communication using the D-Bus protocol.
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Qt GUI C++ Classes: The Qt GUI module provides the basic enablers for graphical applications written with Qt.
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Qt Network C++ Classes: Provides classes to make network programming easier and portable.
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Qt OpenGL C++ Classes: The Qt OpenGL module offers classes that make it easy to use OpenGL in Qt applications.
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Qt Print Support C++ Classes: The Qt PrintSupport module provides classes to make printing easier and portable.
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Qt QML C++ Classes: The C++ API provided by the Qt QML module.
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Qt Quick C++ Classes: The Qt Quick module provides classes for embedding Qt Quick in Qt/C++ applications.
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Qt Quick Test C++ API: Provides macros and functions for tests.
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Qt Quick Widgets C++ Classes: The C++ API provided by the Qt Quick Widgets module.
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Qt SQL C++ Classes: Provides a driver layer, SQL API layer, and a user interface layer for SQL databases.
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Qt Test C++ Classes: Provides classes for unit testing Qt applications and libraries.
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Qt Widgets C++ Classes: The Qt Widgets module extends Qt GUI with C++ widget functionality.
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Qt XML C++ Classes: The Qt XML module provides C++ implementations of the SAX and DOM standards for XML.