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# All Qt Modules

Modules for general software development
QtCore | Core non-graphical classes used by other modules
QtGui | Graphical user interface (GUI) components
QtMultimedia | Classes for low-level multimedia functionality
QtNetwork | Classes for network programming
QtOpenGL | OpenGL support classes
QtOpenVG | OpenVG support classes
QtScript | Classes for evaluating Qt Scripts
QtScriptTools | Additional Qt Script components
QtSql | Classes for database integration using SQL
QtSvg | Classes for displaying the contents of SVG files
QtWebKit | Classes for displaying and editing Web content
QtXml | Classes for handling XML
QtXmlPatterns | An XQuery & XPath engine for XML and custom data models
Phonon | Multimedia framework classes
Qt3Support | Qt 3 compatibility classes
Modules for working with Qt's tools
QtDesigner | Classes for extending Qt Designer
QtUiTools | Classes for handling Qt Designer forms in applications
QtHelp | Classes for online help
QtTest | Tool classes for unit testing
Modules for Windows developers
QAxContainer | Extension for accessing ActiveX controls
QAxServer | Extension for writing ActiveX servers
Modules for Unix developers
QtDBus | Classes for Inter-Process Communication using the D-Bus

If you use qmake to build your projects, the QtCore and QtGui modules are included by default. To link only against QtCore, add the following line to your `.pro` file:

     QT -= gui

On Windows, if you do not use qmake or other build tools such as CMake, you also need to link against the `qtmain` library.

See also Class and Function Documentation.

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