Class and Function Documentation

Links to indexes and lists for finding class and function reference documentation.

All Classes	If you know the name of the class you want, find it here.
All Modules	Qt 4 comprises several modules. Each module is a separate library.
All Namespaces	A Qt namespace contains enum types, functions, and sometimes classes.
Annotated Class List	If you don't know the name of the class you want, but you know what the class should do, you might try looking here.
Groups Of Related Classes	If you know what kind of class you want (GUI, painting, I.O, etc), look here.
Inheritance Hierarchy	The C++ class inheritance hierarchy for all classes in the Qt API.
Obsolete Classes	These classes are obsolete and should not be used in new code.
Qt3 Support Classes	These classes ease the porting of code from Qt 3 to Qt 4.

All Functions	All documented Qt functions listed alphabetically with a link to where each one is declared.
Endian Conversion Functions	The <QtEndian> header provides functions to convert between little and big endian representations of numbers.
Generic Algorithms	The <QtAlgorithms> header includes the generic, template-based algorithms.
Global Qt Declarations	The <QtGlobal> header file includes the fundamental global declarations. It is included by most other Qt header files.
Math Functions	The <QtCore/qmath.h> header provides various math functions.
Platform-Specific Functions	Exported functions for fine tuning Qt applications.