New Classes and Functions in Qt 5.9

This page contains a comprehensive list of all new classes and functions introduced in Qt 5.9. Links to new APIs in previous Qt 5 releases are found at the bottom of this page.

New Classes

New Member Functions

Class QAbstractFileEngine:

virtual id() const

Class QDataStream:

operator<<(qfloat16 f)
operator>>(qfloat16 &f)

Class QDir:

isEmpty(Filters filters) const

Class QStorageInfo:

subvolume() const

Class QTemporaryDir:

filePath(const QString &fileName) const

Class QObject:

startTimer(std::chrono::milliseconds time, Qt::TimerType timerType)

Class QThreadPool:

tryTake(QRunnable *runnable)

Class QByteArray:

toHex(char separator) const

Class QStringRef:

constBegin() const
constEnd() const
isRightToLeft() const

Class QTimeZone:

fromCFTimeZone(CFTimeZoneRef timeZone)
fromNSTimeZone(const NSTimeZone *timeZone)
toCFTimeZone() const
toNSTimeZone() const

Class QVarLengthArray:

append(T &&t)
push_back(T &&t)

Class QIconEngine:

scaledPixmap(const QSize &size, QIcon::Mode mode, QIcon::State state, qreal scale)

Class QImage:

reinterpretAsFormat(Format format)

Class TouchPoint:


Class QOffscreenSurface:

nativeHandle() const
setNativeHandle(void *handle)

Class QPlatformScreen:

virtual currentMode() const
virtual manufacturer() const
virtual model() const
virtual modes() const
virtual preferredMode() const
virtual serialNumber() const

Class QPlatformTheme:

virtual standardButtonShortcut(int button) const

Class QWindow:

parent(AncestorMode mode) const
setFlag(Qt::WindowType flag, bool on)

Class QOpenGLShaderProgram:

addCacheableShaderFromSourceCode(QOpenGLShader::ShaderType type, const QByteArray &source)
addCacheableShaderFromSourceCode(QOpenGLShader::ShaderType type, const QString &source)
addCacheableShaderFromSourceCode(QOpenGLShader::ShaderType type, const char *source)
addCacheableShaderFromSourceFile(QOpenGLShader::ShaderType type, const QString &fileName)

Class QOpenGLTexture:

setCompressedData(int mipLevel, int layer, int layerCount, CubeMapFace cubeFace, int dataSize, const void *data, const QOpenGLPixelTransferOptions * const options)
setData(int mipLevel, int layer, int layerCount, CubeMapFace cubeFace, PixelFormat sourceFormat, PixelType sourceType, const void *data, const QOpenGLPixelTransferOptions * const options)

Class QTextDocument:

toRawText() const

Class QNetworkAccessManager:

addStrictTransportSecurityHosts(const QVector<QHstsPolicy> &knownHosts)
clearConnectionCache()
isStrictTransportSecurityEnabled() const
redirectPolicy() const
setRedirectPolicy(QNetworkRequest::RedirectPolicy policy)
setStrictTransportSecurityEnabled(bool enabled)
strictTransportSecurityHosts() const

Class QNetworkReply:


Class QNetworkConfiguration:

connectTimeout() const
setConnectTimeout(int timeout)

Class QHostInfo:

lookupHost(const QString &name, Functor functor)
lookupHost(const QString &name, const QObject *context, Functor functor)
lookupHost(const QString &name, const QObject *receiver, PointerToMemberFunction function)

Class QWindowsWindowFunctions:


Class QFileDialog:


Class QSizePolicy:

transposed() const

Class QWidget:

setWindowFlag(Qt::WindowType flag, bool on)

Class QSystemTrayIcon:

showMessage(const QString &title, const QString &message, const QIcon &icon, int millisecondsTimeoutHint)

Class QUndoCommand:

isObsolete() const
setObsolete(bool obsolete)

Class QSplitter:

replaceWidget(int index, QWidget *widget)

New Functions in Namespaces

addRow(const char *format, ...)

New Global Functions

operator!=(QHostAddress::SpecialAddress lhs, const QHostAddress &rhs)
qChecksum(const char *data, uint len, Qt::ChecksumType standard)

New Enum Types

enum RedirectPolicy { ManualRedirectPolicy, NoLessSafeRedirectPolicy, SameOriginRedirectPolicy, UserVerifiedRedirectPolicy }
enum ChecksumType { ChecksumIso3309, ChecksumItuV41 }

New Typedefs

New Properties

New Variables

Additions to Other Qt 5 Releases