QtCore Module

 #include <QtCore>

QtCore Module

The QtCore module contains core non-GUI functionality. More...

Namespaces

Qt	Contains miscellaneous identifiers used throughout the Qt library
QtConcurrent	High-level APIs that make it possible to write multi-threaded programs without using low-level threading primitives

Classes

QtConcurrent::Exception	Base class for exceptions that can transferred across threads
QAbstractAnimation	The base of all animations
QAbstractEventDispatcher	Interface to manage Qt's event queue
QAbstractFileEngine	Abstraction for accessing the filesystem
QAbstractFileEngineHandler	Way to register custom file engines with your application
QAbstractFileEngineIterator	Iterator interface for custom file engines
QAbstractItemModel	The abstract interface for item model classes
QAbstractListModel	Abstract model that can be subclassed to create one-dimensional list models
QAbstractState	The base class of states of a QStateMachine
QAbstractTableModel	Abstract model that can be subclassed to create table models
QAbstractTransition	The base class of transitions between QAbstractState objects
QAnimationGroup	Abstract base class for groups of animations
QAtomicInt	Platform-independent atomic operations on integers
QAtomicPointer	Template class that provides platform-independent atomic operations on pointers
QBasicTimer	Timer events for objects
QBitArray	Array of bits
QBuffer	QIODevice interface for a QByteArray
QByteArray	Array of bytes
QByteArrayMatcher	Holds a sequence of bytes that can be quickly matched in a byte array
QCache	Template class that provides a cache
QChar	16-bit Unicode character
QChildEvent	Contains event parameters for child object events
QConstString	Wrapper for constant Unicode string data
QContiguousCache	Template class that provides a contiguous cache
QCoreApplication	Event loop for console Qt applications
QCryptographicHash	Way to generate cryptographic hashes
QCustomEvent	Support for custom events
QDataStream	Serialization of binary data to a QIODevice
QDate	Date functions
QDateTime	Date and time functions
QDebug	Output stream for debugging information
QDir	Access to directory structures and their contents
QDirIterator	Iterator for directory entrylists
QDynamicPropertyChangeEvent	Contains event parameters for dynamic property change events
QEasingCurve	Easing curves for controlling animation
QElapsedTimer	Fast way to calculate elapsed times
QEvent	The base class of all event classes. Event objects contain event parameters
QEventLoop	Means of entering and leaving an event loop
QEventTransition	QObject-specific transition for Qt events
QExplicitlySharedDataPointer	Represents a pointer to an explicitly shared object
QFSFileEngine	Implements Qt's default file engine
QFile	Interface for reading from and writing to files
QFileInfo	System-independent file information
QFileSystemWatcher	Interface for monitoring files and directories for modifications
QFinalState	Final state
QFlag	Helper data type for QFlags
QFlags	Type-safe way of storing OR-combinations of enum values
QFuture	Represents the result of an asynchronous computation
QFutureIterator	Java-style const iterator for QFuture
QFutureSynchronizer	Convenience class that simplifies QFuture synchronization
QFutureWatcher	Allows monitoring a QFuture using signals and slots
QGenericArgument	Internal helper class for marshalling arguments
QGenericReturnArgument	Internal helper class for marshalling arguments
QHash	Template class that provides a hash-table-based dictionary
QHashIterator	Java-style const iterator for QHash and QMultiHash
QHistoryState	Means of returning to a previously active substate
QIODevice	The base interface class of all I/O devices in Qt
QLatin1Char	8-bit ASCII/Latin-1 character
QLatin1String	Thin wrapper around an US-ASCII/Latin-1 encoded string literal
QLibrary	Loads shared libraries at runtime
QLibraryInfo	Information about the Qt library
QLine	Two-dimensional vector using integer precision
QLineF	Two-dimensional vector using floating point precision
QLinkedList	Template class that provides linked lists
QLinkedListIterator	Java-style const iterator for QLinkedList
QList	Template class that provides lists
QListIterator	Java-style const iterator for QList and QQueue
QLocale	Converts between numbers and their string representations in various languages
QMap	Template class that provides a skip-list-based dictionary
QMapIterator	Java-style const iterator for QMap and QMultiMap
QMargins	Defines the four margins of a rectangle
QMetaClassInfo	Additional information about a class
QMetaEnum	Meta-data about an enumerator
QMetaMethod	Meta-data about a member function
QMetaObject	Contains meta-information about Qt objects
QMetaProperty	Meta-data about a property
QMetaType	Manages named types in the meta-object system
QMimeData	Container for data that records information about its MIME type
QModelIndex	Used to locate data in a data model
QMultiHash	Convenience QHash subclass that provides multi-valued hashes
QMultiMap	Convenience QMap subclass that provides multi-valued maps
QMutableHashIterator	Java-style non-const iterator for QHash and QMultiHash
QMutableLinkedListIterator	Java-style non-const iterator for QLinkedList
QMutableListIterator	Java-style non-const iterator for QList and QQueue
QMutableMapIterator	Java-style non-const iterator for QMap and QMultiMap
QMutableSetIterator	Java-style non-const iterator for QSet
QMutableVectorIterator	Java-style non-const iterator for QVector and QStack
QMutex	Access serialization between threads
QMutexLocker	Convenience class that simplifies locking and unlocking mutexes
QObject	The base class of all Qt objects
QObjectCleanupHandler	Watches the lifetime of multiple QObjects
QPair	Template class that stores a pair of items
QParallelAnimationGroup	Parallel group of animations
QPauseAnimation	Pause for QSequentialAnimationGroup
QPersistentModelIndex	Used to locate data in a data model
QPluginLoader	Loads a plugin at run-time
QPoint	Defines a point in the plane using integer precision
QPointF	Defines a point in the plane using floating point precision
QPointer	Template class that provides guarded pointers to QObject
QProcess	Used to start external programs and to communicate with them
QProcessEnvironment	Holds the environment variables that can be passed to a program
QPropertyAnimation	Animates Qt properties
QQueue	Generic container that provides a queue
QReadLocker	Convenience class that simplifies locking and unlocking read-write locks for read access
QReadWriteLock	Read-write locking
QRect	Defines a rectangle in the plane using integer precision
QRectF	Defines a rectangle in the plane using floating point precision
QRegExp	Pattern matching using regular expressions
QResource	Interface for reading directly from resources
QRunnable	The base class for all runnable objects
QScopedArrayPointer	Stores a pointer to a dynamically allocated array of objects, and deletes it upon destruction
QScopedPointer	Stores a pointer to a dynamically allocated object, and deletes it upon destruction
QSemaphore	General counting semaphore
QSequentialAnimationGroup	Sequential group of animations
QSet	Template class that provides a hash-table-based set
QSetIterator	Java-style const iterator for QSet
QSettings	Persistent platform-independent application settings
QSharedData	Base class for shared data objects
QSharedDataPointer	Represents a pointer to an implicitly shared object
QSharedMemory	Access to a shared memory segment
QSharedPointer	Holds a strong reference to a shared pointer
QSignalMapper	Bundles signals from identifiable senders
QSignalTransition	Transition based on a Qt signal
QSize	Defines the size of a two-dimensional object using integer point precision
QSizeF	Defines the size of a two-dimensional object using floating point precision
QSocketNotifier	Support for monitoring activity on a file descriptor
QStack	Template class that provides a stack
QState	General-purpose state for QStateMachine
QStateMachine	Hierarchical finite state machine
QString	Unicode character string
QStringList	List of strings
QStringMatcher	Holds a sequence of characters that can be quickly matched in a Unicode string
QStringRef	Thin wrapper around QString substrings
QSysInfo	Information about the system
QSystemLocale	Can be used to finetune the system locale of the user
QSystemSemaphore	General counting system semaphore
QTemporaryFile	I/O device that operates on temporary files
QTextBoundaryFinder	Way of finding Unicode text boundaries in a string
QTextCodec	Conversions between text encodings
QTextCodecPlugin	Abstract base for custom QTextCodec plugins
QTextDecoder	State-based decoder
QTextEncoder	State-based encoder
QTextIStream	Convenience class for input streams
QTextOStream	Convenience class for output streams
QTextStream	Convenient interface for reading and writing text
QThread	Platform-independent threads
QThreadPool	Manages a collection of QThreads
QThreadStorage	Per-thread data storage
QTime	Clock time functions
QTimeLine	Timeline for controlling animations
QTimer	Repetitive and single-shot timers
QTimerEvent	Contains parameters that describe a timer event
QTranslator	Internationalization support for text output
QUrl	Convenient interface for working with URLs
QUuid	Stores a Universally Unique Identifier (UUID)
QVarLengthArray	Low-level variable-length array
QVariant	Acts like a union for the most common Qt data types
QVariantAnimation	Abstract base class for animations
QVector	Template class that provides a dynamic array
QVectorIterator	Java-style const iterator for QVector and QStack
QWaitCondition	Condition variable for synchronizing threads
QWeakPointer	Holds a weak reference to a shared pointer
QWriteLocker	Convenience class that simplifies locking and unlocking read-write locks for write access
QXmlStreamAttribute	Represents a single XML attribute
QXmlStreamAttributes	Represents a vector of QXmlStreamAttribute
QXmlStreamEntityDeclaration	Represents a DTD entity declaration
QXmlStreamEntityResolver	Entity resolver for a QXmlStreamReader
QXmlStreamNamespaceDeclaration	Represents a namespace declaration
QXmlStreamNotationDeclaration	Represents a DTD notation declaration
QXmlStreamReader	Fast parser for reading well-formed XML via a simple streaming API
QXmlStreamWriter	XML writer with a simple streaming API
QtConcurrent::UnhandledException	Represents an unhandled exception in a worker thread

Detailed Description

All other Qt modules rely on this module. To include the definitions of the module's classes, use the following directive:

 #include <QtCore>