New Classes and Functions in Qt 5.2 | Qt 5.5

- Qt 5.5
- New Classes and Functions in Qt 5.2
- Qt 5.5.1 Reference Documentation

# New Classes and Functions in Qt 5.2

This page contains a comprehensive list of all new classes and functions introduced in Qt 5.2. Links to new APIs in previous Qt 5 releases are found at the bottom of this page.

- New Classes
- New Member Functions
- New Global Functions
- New Macros
- New Enum Types
- New Properties
- New QML Types
- New QML Properties
- New QML Signals
- New QML Methods

### New Classes

A
  QAssociativeIterable

C
  const_iterator (QAssociativeIterable)
  QCollator
  QCollatorSortKey
  QCommandLineOption
  QCommandLineParser
  const_iterator (QSequentialIterable)

F
  QFileSelector

G
  QGeoAddress
  QGeoAreaMonitorInfo
  QGeoAreaMonitorSource
  QGeoCircle
  QGeoCoordinate
  QGeoLocation
  QGeoPositionInfo
  QGeoPositionInfoSource
  QGeoPositionInfoSourceFactory
  QGeoRectangle
  QGeoSatelliteInfo
  QGeoSatelliteInfoSource
  QGeoShape

K
  QKeySequenceEdit

L
  QLoggingCategory

N
  QNativeGestureEvent
  QNmeaPositionInfoSource

O
  QOpenGLTexture

Q
  QQmlFileSelector
  QQuickFramebufferObject

R
  Renderer (QQuickFramebufferObject)

S
  QSequentialIterable
  QStaticPlugin

T
  QTimeZone

### New Member Functions

Class QWebHitTestResult:

| mediaUrl() const

Class QWidget:

| windowIconChanged(const QIcon & icon)
| windowIconTextChanged(const QString & iconText)
| windowTitleChanged(const QString & title)

Class QToolTip:

| showText(const QPoint & pos, const QString & text, QWidget * w, const QRect & rect, int msecDisplayTime)

Class QListView:

virtual | viewportSizeHint() const

Class QSizePolicy:

| retainSizeWhenHidden() const
| setRetainSizeWhenHidden(bool retainSize)

Class QDir:

| operator=(QDir && other)

Class QFileInfo:

| exists(const QString & file)
| operator=(QFileInfo && other)

Class QProcess:

| inputChannelMode() const
| nullDevice()
| setInputChannelMode(InputChannelMode mode)

Class QUrl:

| adjusted(FormattingOptions options) const
| fileName(ComponentFormattingOptions options) const
| fromCFURL(CFURLRef url)
| fromNSURL(const NSURL * url)
| matches(const QUrl & url, FormattingOptions options) const
| operator=(QUrl && other)
| toCFURL() const
| toNSURL() const

Class QUrlQuery:

| operator=(QUrlQuery && other)

Class QPersistentModelIndex:

| operator=(QPersistentModelIndex && other)

Class QMetaType:

| compare(const void * lhs, const void * rhs, int typeId, int * result)
| convert(const void * from, int fromTypeId, void * to, int toTypeId)
| debugStream(QDebug & dbg, const void * rhs, int typeId)
| hasRegisteredComparators()
| hasRegisteredComparators(int typeId)
| hasRegisteredConverterFunction()
| hasRegisteredConverterFunction(int fromTypeId, int toTypeId)
| hasRegisteredDebugStreamOperator()
| hasRegisteredDebugStreamOperator(int typeId)
| registerComparators()
| registerConverter()
| registerConverter(MemberFunction function)
| registerConverter(MemberFunctionOk function)
| registerConverter(UnaryFunction function)

Class QObject:

| connect(const QObject * sender, PointerToMemberFunction signal, const QObject * context, Functor functor, Qt::ConnectionType type)

Class QVariant:

| operator=(QVariant && other)

Class QMimeType:

| operator=(QMimeType && other)

Class QThread:

| isInterruptionRequested() const
| requestInterruption()

Class QThreadPool:

| clear()

Class QBitArray:

| operator=(QBitArray && other)

Class QByteArray:

| fromBase64(const QByteArray & base64, Base64Options options)
| operator=(QByteArray && other)
| toBase64(Base64Options options) const

Class QCommandLineOption:

| operator=(QCommandLineOption && other)

Class QContiguousCache:

| operator=(QContiguousCache<T> && other)

Class QDateTime:

| fromMSecsSinceEpoch(qint64 msecs, Qt::TimeSpec spec, int offsetSeconds)
| fromMSecsSinceEpoch(qint64 msecs, const QTimeZone & timeZone)
| fromTime_t(uint seconds, Qt::TimeSpec spec, int offsetSeconds)
| fromTime_t(uint seconds, const QTimeZone & timeZone)
| isDaylightTime() const
| offsetFromUtc() const
| setOffsetFromUtc(int offsetSeconds)
| setTimeZone(const QTimeZone & toZone)
| timeZone() const
| timeZoneAbbreviation() const
| toOffsetFromUtc(int offsetSeconds) const
| toTimeZone(const QTimeZone & timeZone) const

Class QEasingCurve:

| operator=(QEasingCurve && other)

Class QHash:

| operator=(QHash<Key, T> && other)

Class QLinkedList:

| operator=(QLinkedList<T> && other)

Class QList:

| operator=(QList<T> && other)

Class QMap:

| first()
| first() const
| firstKey() const
| last()
| last() const
| lastKey() const
| operator=(QMap<Key, T> && other)

Class QPair:

| operator=(const QPair<TT1, TT2> & p)

Class QRegExp:

| operator=(QRegExp && other)

Class QExplicitlySharedDataPointer:

| operator=(QExplicitlySharedDataPointer<T> && other)

Class QSharedDataPointer:

| operator=(QSharedDataPointer<T> && other)

Class QString:

| fromCFString(CFStringRef string)
| fromNSString(const NSString * string)
| operator=(QString && other)
| toCFString() const
| toNSString() const

Class QStringRef:

| left(int n) const
| mid(int position, int n) const
| right(int n) const

Class QVector:

| length() const
| operator=(QVector<T> && other)
| removeAt(int i)
| takeAt(int i)

Class QSplashScreen:

| message() const

Class QTabBar:

| tabBarClicked(int index)
| tabBarDoubleClicked(int index)

Class QTabWidget:

| tabBarClicked(int index)
| tabBarDoubleClicked(int index)

Class QQuickWindow:

| resetOpenGLState()

Class QTreeView:

| setTreePosition(int index)
| treePosition() const

Class QLineEdit:

| addAction(const QIcon & icon, ActionPosition position)
| addAction(QAction * action, ActionPosition position)

Class QFileDialog:

| currentUrlChanged(const QUrl & url)
| directoryUrl() const
| directoryUrlEntered(const QUrl & directory)
| getExistingDirectoryUrl(QWidget * parent, const QString & caption, const QUrl & dir, Options options, const QStringList & supportedSchemes)
| getOpenFileUrl(QWidget * parent, const QString & caption, const QUrl & dir, const QString & filter, QString * selectedFilter, Options options, const QStringList & supportedSchemes)
| getOpenFileUrls(QWidget * parent, const QString & caption, const QUrl & dir, const QString & filter, QString * selectedFilter, Options options, const QStringList & supportedSchemes)
| getSaveFileUrl(QWidget * parent, const QString & caption, const QUrl & dir, const QString & filter, QString * selectedFilter, Options options, const QStringList & supportedSchemes)
| mimeTypeFilters() const
| selectMimeTypeFilter(const QString & filter)
| selectUrl(const QUrl & url)
| selectedUrls() const
| setDirectoryUrl(const QUrl & directory)
| setMimeTypeFilters(const QStringList & filters)
| urlSelected(const QUrl & url)
| urlsSelected(const QList<QUrl> & urls)

Class QX11Info:

| getTimestamp()
| isPlatformX11()

Class QNetworkAccessManager:

| connectToHost(const QString & hostName, quint16 port)
| connectToHostEncrypted(const QString & hostName, quint16 port, const QSslConfiguration & sslConfiguration)
| supportedSchemes() const
| supportedSchemesImplementation() const

Class QButtonGroup:

| buttonToggled(QAbstractButton * button, bool checked)
| buttonToggled(int id, bool checked)

Class QAbstractItemView:

virtual | viewportSizeHint() const

Class QNetworkConfiguration:

| bearerTypeFamily() const

Class QInputDialog:

| getMultiLineText(QWidget * parent, const QString & title, const QString & label, const QString & text, bool * ok, Qt::WindowFlags flags, Qt::InputMethodHints inputMethodHints)

Class QMessageBox:

| checkBox() const
| setCheckBox(QCheckBox * cb)

Class QSslConfiguration:

| sessionTicket() const
| sessionTicketLifeTimeHint() const
| setSessionTicket(const QByteArray & sessionTicket)

Class QFileIconProvider:

| options() const
| setOptions(Options options)

Class QHeaderView:

| resizeContentsPrecision() const
| setResizeContentsPrecision(int precision)

Class QMenu:

| setAsDockMenu()
| toNSMenu()

Class QLayout:

| replaceWidget(QWidget * from, QWidget * to, Qt::FindChildOptions options)

Class QMenuBar:

| toNSMenu()

Class QSerialPort:

| handle() const

Class QAbstractScrollArea:

virtual | viewportSizeHint() const

Class QIcon:

| operator=(QIcon && other)

Class QImage:

| operator=(QImage && other)

Class QPicture:

| operator=(QPicture && other)

Class QPixmap:

| operator=(QPixmap && other)

Class QCursor:

| operator=(QCursor && other)

Class QNativeGestureEvent:

| gestureType() const
| globalPos() const
| localPos() const
| pos() const
| screenPos() const
| value() const
| windowPos() const

Class QWheelEvent:

| phase() const

Class QGuiApplication:

| applicationState()
| applicationStateChanged(Qt::ApplicationState state)
| sync()

Class QKeySequence:

| operator=(QKeySequence && other)

Class QPalette:

| operator=(QPalette && other)

Class QTouchDevice:

| maximumTouchPoints() const

Class QVector2D:

| operator[](int i)
| operator[](int i) const

Class QVector3D:

| operator[](int i)
| operator[](int i) const

Class QVector4D:

| operator[](int i)
| operator[](int i) const

Class QPlatformFontDatabase:

| registerAliasToFontFamily(const QString & familyName, const QString & alias)

Class QPlatformTheme:

virtual | keyBindings(QKeySequence::StandardKey key) const

Class QPlatformIntegration:

virtual | createEventDispatcher() const = 0
virtual | createPlatformSessionManager(const QString & id, const QString & key) const
virtual | sync()

Class QBrush:

| operator=(QBrush && other)

Class QColor:

| name(NameFormat format) const

Class QPainterPath:

| operator=(QPainterPath && other)

Class QPen:

| operator=(QPen && other)

Class QRegion:

| operator=(QRegion && other)

Class QAbstractTextDocumentLayout:

| unregisterHandler(int objectType, QObject * component)

Class QFont:

| operator=(QFont && other)

Class QFontDatabase:

| systemFont(SystemFont type)

Class QFontMetrics:

| operator=(QFontMetrics && other)

### New Global Functions

| qFloatDistance(double a, double b)
| qFloatDistance(float a, float b)
| qPopulationCount(quint8 v)
| qPopulationCount(quint64 v)
| qPopulationCount(quint32 v)
| qPopulationCount(quint16 v)

### New Macros

| Q_DECLARE_LOGGING_CATEGORY( name)
| Q_FORWARD_DECLARE_CF_TYPE( type)
| Q_FORWARD_DECLARE_MUTABLE_CF_TYPE( type)
| Q_FORWARD_DECLARE_OBJC_CLASS( classname)
| Q_LOGGING_CATEGORY( name, string)
| qCCritical( category)
| qCDebug( category)
| qCWarning( category)

### New Enum Types

enum | SizeAdjustPolicy { AdjustIgnored, AdjustToContentsOnFirstShow, AdjustToContents }
enum | Base64Option { Base64Encoding, Base64UrlEncoding, KeepTrailingEquals, OmitTrailingEquals }
enum | Option { DontUseCustomDirectoryIcons }
enum | SystemFont { GeneralFont, FixedFont, TitleFont, SmallestReadableFont }
enum | ActionPosition { LeadingPosition, TrailingPosition }
enum | InputChannelMode { ManagedInputChannel, ForwardedInputChannel }
enum | ScrollPhase { ScrollBegin, ScrollUpdate, ScrollEnd }

### New Properties

sizeAdjustPolicy : const currentData : const filterMode : const maximumSectionSize : const clearButtonEnabled : const | unifiedTitleAndToolBarOnMac : const nativeOrientation : const displayIntegerBase : const placeholderText : const toolTipDuration : const

### New QML Types

A
  Address
  Animator

B
  BusyIndicator
  BusyIndicatorStyle

F
  FontDialog

L
  Location

M
  MessageDialog

O
  OpacityAnimator

P
  Position
  PositionSource

Q
  QtPositioning

R
  RotationAnimator

S
  ScaleAnimator
  SpinBoxStyle
  StatusBarStyle
  Switch
  SwitchStyle

T
  TextAreaStyle
  ToolBarStyle

U
  UniformAnimator

X
  XAnimator

Y
  YAnimator

### New QML Properties

| colorData
| dragType
| formats
| hasColor
| hasHtml
| hasText
| hasUrls
| hoveredLink
| hoveredLink
| html
| mimeData
| pixelDensity
| proposedAction
| showFiles
| showHidden
| text
| urls

### New QML Signals

| linkHovered()
| linkHovered()
| editingFinished()

### New QML Methods

| acceptProposedAction()
| getDataAsString()
| matches()
| append()

## Additions to Other Qt 5 Releases

- What's New in Qt 5.4
- What's New in Qt 5.3
- What's New in Qt 5.1
- What's New in Qt 5.0