Qt Core C++ Classes | Qt Core (original) (raw)

Qt Contains miscellaneous identifiers used throughout the Qt library
Qt::Literals Inline namespace declares literal operators for Qt types
Qt::Literals::StringLiterals Declares string literal operators for Qt types
QtFuture Contains miscellaneous identifiers used by the QFuture class
QtJniTypes Declares C++ types that correspond to Java types
QtLiterals Declares literal operators for Qt types
QAbstractAnimation The base of all animations
QAbstractEventDispatcher Interface to manage Qt's event queue
QAbstractEventDispatcher::TimerInfoV2
QAbstractEventDispatcherV2
QAbstractItemModel The abstract interface for item model classes
QAbstractListModel Abstract model that can be subclassed to create one-dimensional list models
QAbstractNativeEventFilter Interface for receiving native events, such as MSG or XCB event structs
QAbstractProxyModel Base class for proxy item models that can do sorting, filtering or other data processing tasks
QAbstractTableModel Abstract model that can be subclassed to create table models
QAdoptSharedDataTag Helper tag class
QAnimationGroup Abstract base class for groups of animations
QAnyStringView Unified view on Latin-1, UTF-8, or UTF-16 strings with a read-only subset of the QString API
QAssociativeIterable Iterable interface for an associative container in a QVariant
QAtomicInt Platform-independent atomic operations on int
QAtomicInteger Platform-independent atomic operations on integers
QAtomicPointer Template class that provides platform-independent atomic operations on pointers
QAtomicScopedValueRollback Provides a QScopedValueRollback for atomic variables
QBEInteger Platform-independent big-endian integers
QBaseIterator
QBasicTimer Timer events for objects
QBindable Wrapper class around binding-enabled properties. It allows type-safe operations while abstracting the differences between the various property classes away
QBitArray Array of bits
QBluetoothPermission Access Bluetooth peripherals
QBuffer QIODevice interface for a QByteArray
QByteArray Array of bytes
QByteArray::FromBase64Result QByteArray::FromBase64Result class holds the result of a call to QByteArray::fromBase64Encoding
QByteArrayList List of byte arrays
QByteArrayMatcher Holds a sequence of bytes that can be quickly matched in a byte array
QByteArrayView View on an array of bytes with a read-only subset of the QByteArray API
QCache Template class that provides a cache
QCalendar Describes calendar systems
QCalendar::SystemId
QCalendarPermission Access the user's calendar
QCameraPermission Access the camera for taking pictures or videos
QCborArray Used to hold an array of CBOR elements
QCborError Holds the error condition found while parsing or validating a CBOR stream
QCborMap Used to hold an associative container representable in CBOR
QCborMap::ConstIterator QCborMap::ConstIterator class provides an STL-style const iterator for QCborMap
QCborMap::Iterator QCborMap::Iterator class provides an STL-style non-const iterator for QCborMap
QCborParserError Used by QCborValue to report a parsing error
QCborStreamReader Simple CBOR stream decoder, operating on either a QByteArray or QIODevice
QCborStreamReader::StringResult
QCborStreamWriter Simple CBOR encoder operating on a one-way stream
QCborValue Encapsulates a value in CBOR
QChar 16-bit Unicode character
QChildEvent Contains event parameters for child object events
QChronoTimer Repetitive and single-shot timers
QCollator Compares strings according to a localized collation algorithm
QCollatorSortKey Can be used to speed up string collation
QCommandLineOption Defines a possible command-line option
QCommandLineParser Means for handling the command line options
QConcatenateTablesProxyModel Proxies multiple source models, concatenating their rows
QConstIterator Allows iteration over a container in a QVariant
QContactsPermission Access the user's contacts
QContiguousCache Template class that provides a contiguous cache
QCoreApplication Event loop for Qt applications without UI
QCryptographicHash Way to generate cryptographic hashes
QDataStream Serialization of binary data to a QIODevice
QDate Date functions
QDateTime Date and time functions
QDeadlineTimer Marks a deadline in the future
QDebug Output stream for debugging information
QDebugStateSaver Convenience class for custom QDebug operators
QDir Access to directory structures and their contents
QDirIterator Iterator for directory entrylists
QDirListing STL-style iterator for directory entries
QDirListing::DirEntry
QDirListing::sentinel
QDynamicPropertyChangeEvent Contains event parameters for dynamic property change events
QEasingCurve Easing curves for controlling animation
QElapsedTimer Fast way to calculate elapsed times
QEnableSharedFromThis A base class that allows obtaining a QSharedPointer for an object already managed by a shared pointer
QEvent The base class of all event classes. Event objects contain event parameters
QEventLoop Means of entering and leaving an event loop
QEventLoopLocker Means to quit an event loop when it is no longer needed
QException Base class for exceptions that can be transferred across threads
QExplicitlySharedDataPointer Represents a pointer to an explicitly shared object
QFile Interface for reading from and writing to files
QFileDevice Interface for reading from and writing to open files
QFileInfo OS-independent API to retrieve information about file system entries
QFileSelector Convenient way of selecting file variants
QFileSystemWatcher Interface for monitoring files and directories for modifications
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
QGlobalStatic Used to implement a global static object
QGregorianCalendar Implements the Gregorian calendar
QHash Template class that provides a hash-table-based dictionary
QHash::TryEmplaceResult Used to represent the result of a tryEmplace() operation
QHashIterator Java-style const iterator for QHash and QMultiHash
QHashSeed
QIODevice The base interface class of all I/O devices in Qt
QIODeviceBase Base class for QIODevice that provides flags describing the mode in which a device is opened
QIdentityProxyModel Proxies its source model unmodified
QItemSelection Manages information about selected items in a model
QItemSelectionModel Keeps track of a view's selected items
QItemSelectionRange Manages information about a range of selected items in a model
QIterable Template class that is the base class for QSequentialIterable and QAssociativeIterable
QIterator Template class that allows iteration over a container in a QVariant
QJalaliCalendar Jalali (Hijri Shamsi) calendar system implementation
QJniArray Template class that represents an array in Java
QJniArrayBase Common, type-independent APIs for QJniArray
QJniEnvironment Access to the JNI Environment (JNIEnv)
QJniObject A convenience wrapper around the Java Native Interface (JNI)
QJsonArray Encapsulates a JSON array
QJsonDocument Way to read and write JSON documents
QJsonObject Encapsulates a JSON object
QJsonParseError Used to report errors during JSON parsing
QJsonValue Encapsulates a value in JSON
QJulianCalendar Julian calendar system implementation
QKeyCombination Stores a combination of a key with optional modifiers
QKeyValueIterator Iterator over the key/value pairs of an associative container
QLEInteger Platform-independent little-endian integers
QLatin1Char 8-bit ASCII/Latin-1 character
QLatin1String The same as QLatin1StringView
QLatin1StringMatcher Optimized search for substring in Latin-1 text
QLatin1StringView Thin wrapper around a 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
QList Template class that provides a dynamic array
QListIterator Java-style const iterator for QList and QQueue
QLocale Converts between numbers and their string representations in various languages
QLocationPermission Access the user's location
QLockFile Locking between processes using a file
QLoggingCategory Represents a category, or 'area' in the logging infrastructure
QMap Template class that provides an associative array
QMapIterator Java-style const iterator for QMap
QMargins Defines the four margins of a rectangle
QMarginsF Defines the four margins of a rectangle
QMessageAuthenticationCode Way to generate hash-based message authentication codes
QMessageLogContext Additional information about a log message
QMessageLogger Generates log messages
QMetaClassInfo Additional information about a class
QMetaContainer Common functionality for sequential and associative containers
QMetaEnum Meta-data about an enumerator
QMetaMethod Meta-data about a member function
QMetaObject Contains meta-information about Qt objects
QMetaObject::Connection
QMetaProperty Meta-data about a property
QMetaSequence Allows type erased access to sequential containers
QMetaType Manages named types in the meta-object system
QMicrophonePermission Access the microphone for monitoring or recording sound
QMilankovicCalendar Milanković calendar system implementation
QMimeData Container for data that records information about its MIME type
QMimeDatabase Maintains a database of MIME types
QMimeType Describes types of file or data, represented by a MIME type string
QModelIndex Used to locate data in a data model
QModelRoleData Holds a role and the data associated to that role
QModelRoleDataSpan Span over QModelRoleData objects
QMultiHash Multi-valued hash table
QMultiMap Template class that provides an associative array with multiple equivalent keys
QMultiMap::key_iterator QMultiMap::key_iterator class provides an STL-style const iterator for QMultiMap keys
QMultiMapIterator Java-style const iterator for QMultiMap. QMultiMap has both Java-style iterators and STL-style iterators. STL-style iterators are more efficient and should be preferred
QMutableHashIterator Java-style non-const iterator for QHash and QMultiHash
QMutableListIterator Java-style non-const iterator for QList, QQueue and QStack
QMutableMapIterator Java-style non-const iterator for QMap
QMutableMultiMapIterator Java-style non-const iterator for QMultiMap
QMutableSetIterator Java-style non-const iterator for QSet
QMutex Access serialization between threads
QMutexLocker Convenience class that simplifies locking and unlocking mutexes
QNativeInterface::QAndroidApplication Native interface to a core application on Android
QNativeIpcKey Holds a native key used by QSystemSemaphore and QSharedMemory
QNtfsPermissionCheckGuard RAII class to manage NTFS permission checking
QObject The base class of all Qt objects
QObjectBindableProperty Template class that enables automatic property bindings for property data stored in QObject derived classes
QObjectCleanupHandler Watches the lifetime of multiple QObjects
QObjectComputedProperty Template class to help port old properties to the bindable property system
QOperatingSystemVersion Information about the operating system version
QParallelAnimationGroup Parallel group of animations
QPartialOrdering Represents the result of a comparison that allows for unordered results
QPauseAnimation Pause for QSequentialAnimationGroup
QPermission An opaque wrapper of a typed permission
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
QProcess::CreateProcessArguments
QProcess::UnixProcessParameters
QProcessEnvironment Holds the environment variables that can be passed to a program
QPromise Way to store computation results to be accessed by QFuture
QProperty Template class that enables automatic property bindings
QPropertyAnimation Animates Qt properties
QPropertyBindingError
QPropertyChangeHandler Controls the lifecycle of change callback installed on a QProperty
QPropertyData Helper class for properties with automatic property bindings
QPropertyNotifier Controls the lifecycle of change callback installed on a QProperty
QQueue Generic container that provides a queue
QRandomGenerator Allows one to obtain random values from a high-quality Random Number Generator
QRandomGenerator64 Allows one to obtain 64-bit random values from a high-quality, seed-less Random Number Generator
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 finite rectangle in the plane using floating point precision
QRecursiveMutex Access serialization between threads
QRegularExpression Pattern matching using regular expressions
QRegularExpressionMatch The results of a matching a QRegularExpression against a string
QRegularExpressionMatchIterator Iterator on the results of a global match of a QRegularExpression object against a string
QResource Interface for reading directly from resources
QRomanCalendar Shared base for calendars based on the ancient Roman calendar
QRunnable The base class for all runnable objects
QSaveFile Interface for safely writing to files
QScopeGuard Provides a scope guard for calling a function at the end of a scope
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
QScopedPropertyUpdateGroup RAII class around Qt::beginPropertyUpdateGroup()/Qt::endPropertyUpdateGroup()
QScopedValueRollback Resets a variable to its previous value on destruction
QSemaphore General counting semaphore
QSemaphoreReleaser Exception-safe deferral of a QSemaphore::release() call
QSequentialAnimationGroup Sequential group of animations
QSequentialIterable Iterable interface for a container in a QVariant
QSet Template class that provides a hash-table-based set
QSet::const_iterator QSet::const_iterator class provides an STL-style const iterator for QSet
QSet::iterator QSet::iterator class provides an STL-style non-const iterator for QSet
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
QSignalBlocker Exception-safe wrapper around QObject::blockSignals()
QSignalMapper Bundles signals from identifiable senders
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
QSortFilterProxyModel Support for sorting and filtering data passed between another model and a view
QSpan A non-owning container over contiguous data
QStack Template class that provides a stack
QStandardPaths Methods for accessing standard paths
QStaticByteArrayMatcher Compile-time version of QByteArrayMatcher
QStaticLatin1StringMatcher Compile-time version of QLatin1StringMatcher
QStaticPlugin Struct containing a reference to a static plugin instance together with its meta data
QStorageInfo Provides information about currently mounted storage and drives
QString Unicode character string
QStringConverter Base class for encoding and decoding text
QStringDecoder State-based decoder for text
QStringEncoder State-based encoder for text
QStringList List of strings
QStringListModel Model that supplies strings to views
QStringMatcher Holds a sequence of characters that can be quickly matched in a Unicode string
QStringTokenizer Splits strings into tokens along given separators
QStringView Unified view on UTF-16 strings with a read-only subset of the QString API
QSysInfo Information about the system
QSystemSemaphore General counting system semaphore
QTaggedIterator Template class that wraps an iterator and exposes standard iterator traits
QTemporaryDir Creates a unique directory for temporary use
QTemporaryFile I/O device that operates on temporary files
QTextBoundaryFinder Way of finding Unicode text boundaries in a string
QTextStream Convenient interface for reading and writing text
QThread Platform-independent way to manage threads
QThreadPool Manages a collection of QThreads
QThreadStorage Per-thread data storage
QTime Clock time functions
QTimeLine Timeline for controlling animations
QTimeZone Identifies how a time representation relates to UTC
QTimeZone::OffsetData
QTimer Repetitive and single-shot timers
QTimerEvent Contains parameters that describe a timer event
QTranslator Internationalization support for text output
QTransposeProxyModel This proxy transposes the source model
QTypeRevision Contains a lightweight representation of a version number with two 8-bit segments, major and minor, either of which can be unknown
QUnhandledException Represents an unhandled exception in a Qt Concurrent worker thread
QUntypedBindable Uniform interface over bindable properties like QProperty\<T\> and QObjectBindableProperty of any type T
QUrl Convenient interface for working with URLs
QUrlQuery Way to manipulate a key-value pairs in a URL's query
QUtf8StringView Unified view on UTF-8 strings with a read-only subset of the QString API
QUuid Stores a Universally Unique Identifier (UUID)
QUuid::Id128Bytes
QVarLengthArray Low-level variable-length array
QVariant Acts like a union for the most common Qt data types
QVariantAnimation Base class for animations
QVariantConstPointer Emulated const pointer to QVariant based on a pointer
QVariantPointer Template class that emulates a pointer to QVariant based on a pointer
QVariantRef Acts as a non-const reference to a QVariant
QVector Alias for QList
QVersionNumber Contains a version number with an arbitrary number of segments
QWaitCondition Condition variable for synchronizing threads
QWeakPointer Holds a weak reference to a shared pointer
QWinEventNotifier Support for the Windows Wait functions
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
Qt::partial_ordering Qt::partial_ordering represents the result of a comparison that allows for unordered results
Qt::strong_ordering Qt::strong_ordering represents a comparison where equivalent values are indistinguishable
Qt::totally_ordered_wrapper Qt::totally_ordered_wrapper is a wrapper type that provides strict total order for the wrapped types
Qt::weak_ordering Qt::weak_ordering represents a comparison where equivalent values are still distinguishable
QtFuture::WhenAnyResult QtFuture::WhenAnyResult is used to represent the result of QtFuture::whenAny()
qfloat16 Provides 16-bit floating point support