Qt Reference Documentation

All Modules

Modules for general software development
QtCoreCore non-graphical classes used by other modules
QtGuiGraphical user interface (GUI) components
QtMultimediaClasses for low-level multimedia functionality
QtNetworkClasses for network programming
QtOpenGLOpenGL support classes
QtOpenVGOpenVG support classes
QtScriptClasses for evaluating Qt Scripts
QtScriptToolsAdditional Qt Script components
QtSqlClasses for database integration using SQL
QtSvgClasses for displaying the contents of SVG files
QtWebKitClasses for displaying and editing Web content
QtXmlClasses for handling XML
QtXmlPatternsAn XQuery & XPath engine for XML and custom data models
QtDeclarativeAn engine for declaratively building fluid user interfaces.
PhononMultimedia framework classes
Qt3SupportQt 3 compatibility classes
Modules for working with Qt's tools
QtDesignerClasses for extending Qt Designer
QtUiToolsClasses for handling Qt Designer forms in applications
QtHelpClasses for online help
QtTestTool classes for unit testing
Modules for Windows developers
QAxContainerExtension for accessing ActiveX controls
QAxServerExtension for writing ActiveX servers
Modules for Unix developers
QtDBusClasses 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.