内容

• Qt 6 中的构建系统变化
• 支持模块的变化
• Qt 6.0 中的新模块
• Qt 6.0 要移除的模块
• 新的类和函数

Qt 6.0 的新功能

Qt 6 中的构建系统变化

从源代码构建 Qt 现在要求 CMake 和 Ninja。见 Qt 6 中的构建系统变化 了解有关配置中此和其它变化的更多细节。

支持模块的变化

Qt 6.0 比 Qt 5 更精简且某些模块 Qt 6.0 不再默认安装。由于 Qt 是模块化结构，新模块或之前的 Qt 5 模块可能出现在 Qt 6 未来发行中。更多信息，请拜访 所有模块 页面。

Qt 6 中的 Qt 模块变化 有 API 变化的列表。

Qt 6.0 中的新模块

以下是 Qt 6.0 中的新模块。

• Qt 5 Core Compatibility APIs
• Qt Shader Tools - 用于图形和计算着色器

Qt 6.0 要移除的模块

以下是不在 Qt 6.0 中的 Qt 5 模块。在未来发行的 Qt 6 中可能重新引入它们。

模块	qmake	注释
Qt Android Extras	androidextras	见 Qt Extras 模块的变化
Qt Bluetooth	bluetooth
Qt Charts	charts
Qt Data Visualization	datavisualization
Qt Graphical Effects		仅 QML 类型
Qt Location	location
Qt Mac Extras	macextras	见 Qt Extras 模块的变化
Qt Multimedia	multimedia
Qt Multimedia Widgets	multimediawidgets
Qt NFC	nfc
Qt Positioning	positioning
Qt Purchasing	purchasing
Qt Quick Extras		合并进 Qt Quick Controls
Qt Remote Objects	remoteobjects
Qt Script	qtscript
Qt SCXML	scxml
Qt Script Tools	scripttools
Qt Sensors	sensors
Qt Serial Bus	serialbus
Qt Serial Port	serialport
Qt Speech	texttospeech
Qt WebChannel	webchannel
Qt WebEngine	webenginecore
Qt WebSockets	websockets
Qt WebView	webview
Qt Windows Extras	winextras	见 Qt Extras 模块的变化
Qt X11 Extras	x11extras	见 Qt Extras 模块的变化
Qt XML Patterns	xmlpatterns

新的类和函数

本章节提供 Qt 6 中引入的所有新类和函数的综合列表。

• 新名称空间
• 新类
• 新成员函数
• 名称空间中的新函数
• 新全局函数
• 新宏
• 新枚举类型
• 新类型别名
• 新特性
• 新的变量
• 新 QML 类型
• 新 QML 特性

新名称空间

namespace	QNativeInterface
namespace	QQuickOpenGLUtils

新类

A

QAbstractFileIconProvider

QAction

QActionGroup

QAdoptSharedDataTag

QAndroidOffscreenSurface ( QNativeInterface )

QAnyStringView

QAxBaseObject

QAxBaseWidget

QAxObjectInterface

B

QBoundingVolume ( Qt3DCore )

QByteArrayView

C

QCocoaGLContext ( QNativeInterface )

QConstIterator

QCoreSettings ( Qt3DCore )

E

QEGLContext ( QNativeInterface )

QEventPoint

G

QGeometryView ( Qt3DCore )

QGLXContext ( QNativeInterface )

I

QInputDevice

QIterable

QIterator

K

QKeyCombination

M

QMetaSequence

QModelRoleData

QModelRoleDataSpan

O

QObjectBindableProperty

QObjectComputedProperty

QOpenGLVersionFunctionsFactory

P

QPageRanges

QPartialOrdering

QPickingProxy ( Qt3DRender )

QPointerEvent

QPointingDevice

QPromise

QProperty

QPropertyBindingError

QPropertyData

Q

QQuick3DTextureData

QQuickGraphicsConfiguration

QQuickGraphicsDevice

QQuickRenderTarget

S

QSGD3D11Texture ( QNativeInterface )

QSGMetalTexture ( QNativeInterface )

QSGOpenGLTexture ( QNativeInterface )

QSGVulkanTexture ( QNativeInterface )

QSinglePointEvent

QStringTokenizer

T

QTaggedIterator

QTaskBuilder ( QtConcurrent )

QTypeRevision

U

QUntypedBindable

QUtf8StringView

V

QVariantConstPointer

QVariantPointer

QVariantRef

W

QWaylandQtTextInputMethodManager

QWGLContext ( QNativeInterface )

新成员函数

类 QBluetoothDeviceInfo :

QList<QBluetoothUuid>

serviceUuids () const

类 QAbstractItemModel :

virtual bool	clearItemData (const QModelIndex & index )
virtual void	multiData (const QModelIndex & index , QModelRoleDataSpan roleDataSpan ) const

类 QAbstractProxyModel :

virtual bool

clearItemData (const QModelIndex & index ) override

类 QByteArray :

int	compare (QByteArrayView bv , Qt::CaseSensitivity cs ) const
bool	contains (QByteArrayView bv ) const
qsizetype	count (QByteArrayView bv ) const
bool	endsWith (QByteArrayView bv ) const
QByteArray	first (qsizetype n ) const
qsizetype	indexOf (QByteArrayView bv , qsizetype from ) const
QByteArray &	insert (qsizetype i , QByteArrayView data )
QByteArray	last (qsizetype n ) const
qsizetype	lastIndexOf (QByteArrayView bv , qsizetype from ) const
void	push_back (QByteArrayView str )
void	push_front (QByteArrayView str )
QByteArray &	replace (QByteArrayView before , QByteArrayView after )
QByteArray	sliced (qsizetype pos , qsizetype n ) const
QByteArray	sliced (qsizetype pos ) const
bool	startsWith (QByteArrayView bv ) const

类 QBitArray :

quint32

toUInt32 (QSysInfo::Endian endianness , bool * ok ) const

类 QChar :

QChar	fromUcs2 (char16_t c )
R	fromUcs4 (char32_t c )

类 QDate :

QDate	fromString (QStringView string , Qt::DateFormat format )
QDate	fromString (QStringView string , QStringView format , QCalendar cal )
QDate	fromString (const QString & string , QStringView format , QCalendar cal )

类 QDataStream :

QDataStream &	operator<< (char16_t c )
QDataStream &	operator<< (char32_t c )
QDataStream &	operator<< (QDataStream & out , const std::pair<T1, T2> & pair )
QDataStream &	operator>> (char16_t & c )
QDataStream &	operator>> (char32_t & c )
QDataStream &	operator>> (QDataStream & in , std::pair<T1, T2> & pair )

类 QDateTime :

QDateTime	fromString (QStringView string , Qt::DateFormat format )
QDateTime	fromString (QStringView string , QStringView format , QCalendar cal )
QDateTime	fromString (const QString & string , QStringView format , QCalendar cal )

类 QDebug :

QDebug &	operator<< (const char16_t * t )
QDebug &	operator<< (QUtf8StringView s )
QDebug &	operator<< (QByteArrayView t )
QString	toString (T && object )

类 QDir :

void	addSearchPath (const QString & prefix , const std::filesystem::path & path )
std::filesystem::path	filesystemAbsolutePath () const
std::filesystem::path	filesystemCanonicalPath () const
std::filesystem::path	filesystemPath () const
void	setPath (const std::filesystem::path & path )

类 QEvent :

virtual QEvent *	clone () const
bool	isInputEvent () const
bool	isPointerEvent () const
bool	isSinglePointEvent () const

类 QExplicitlySharedDataPointer :

T *	get () const
void	reset (T * ptr )

类 QFile :

bool	copy (const std::filesystem::path & newName )
std::filesystem::path	filesystemFileName () const
bool	link (const std::filesystem::path & newName )
QFileDevice::Permissions	permissions (const std::filesystem::path & filename )
bool	rename (const std::filesystem::path & newName )
void	setFileName (const std::filesystem::path & name )
bool	setPermissions (const std::filesystem::path & filename , QFileDevice::Permissions permissionSpec )

类 QFileInfo :

std::filesystem::path	filesystemAbsoluteFilePath () const
std::filesystem::path	filesystemAbsolutePath () const
std::filesystem::path	filesystemCanonicalFilePath () const
std::filesystem::path	filesystemCanonicalPath () const
std::filesystem::path	filesystemFilePath () const
std::filesystem::path	filesystemPath () const
std::filesystem::path	filesystemSymLinkTarget () const
void	setFile (const std::filesystem::path & file )
void	stat ()

类 QFuture :

bool	isSuspended () const
bool	isSuspending () const
bool	isValid () const
QFuture<T>	onCanceled (Function && handler )
QFuture<T>	onFailed (Function && handler )
void	setSuspended (bool suspend )
void	suspend ()
T	takeResult ()
QFuture<ResultType<Function> >	then (Function && function )
QFuture<ResultType<Function> >	then (QtFuture::Launch policy , Function && function )
QFuture<ResultType<Function> >	then (QThreadPool * pool , Function && function )
void	toggleSuspended ()

类 QFutureWatcher :

bool	isSuspended () const
bool	isSuspending () const
void	setSuspended (bool suspend )
void	suspend ()
void	suspended ()
void	suspending ()
void	toggleSuspended ()

类 QHash :

size_t	qHash (char8_t key , size_t seed )
size_t	qHash (char16_t key , size_t seed )
size_t	qHash (char32_t key , size_t seed )
size_t	qHash (wchar_t key , size_t seed )
size_t	qHash (const QByteArrayView & key , size_t seed )
size_t	qHash (std::nullptr_t key , size_t seed )
size_t	qHash (QPoint key , size_t seed )
size_t	qHash (const QTypeRevision & key , size_t seed )
size_t	qHashMulti (size_t seed , const T &... args )
size_t	qHashMultiCommutative (size_t seed , const T &... args )

类 QIODevice :

virtual qint64

skipData (qint64 maxSize )

类 QJsonValue :

qint64

toInteger (qint64 defaultValue ) const

类 QLatin1String :

QLatin1String	first (qsizetype n ) const
QLatin1String	last (qsizetype n ) const
QLatin1String	sliced (qsizetype pos ) const
QLatin1String	sliced (qsizetype pos , qsizetype n ) const
QString	toString () const
decltype(qTokenize(*this, std::forward<Needle>(needle), flags...))	tokenize (Needle && sep , Flags... flags ) const

类 QLibraryInfo :

QString

path (QLibraryInfo::LibraryPath p )

类 QList :

void	append (QList<T> && value )
QList<T>	first (qsizetype n ) const
QList<T>	last (qsizetype n ) const
QList<T>	operator+ (QList<T> && other ) const
QList<T> &	operator+= (QList<T> && other )
QList<T> &	operator<< (QList<T> && other )
QList<T>	sliced (qsizetype pos , qsizetype n ) const
QList<T>	sliced (qsizetype pos ) const

类 QLocale :

QString

quoteString (QStringView str , QLocale::QuotationStyle style ) const

类 QMap :

QMap::iterator

erase (QMap::const_iterator first , QMap::const_iterator last )

类 QMargins :

QMargins

operator| (const QMargins & m1 , const QMargins & m2 )

类 QMarginsF :

QMarginsF

operator| (const QMarginsF & m1 , const QMarginsF & m2 )

类 QMetaMethod :

QMetaType	parameterMetaType (int index ) const
QByteArray	parameterTypeName (int index ) const
int	relativeMethodIndex () const
QMetaType	returnMetaType () const

类 QMetaProperty :

QUntypedBindable	bindable (QObject * object ) const
bool	isBindable () const
QMetaType	metaType () const
int	typeId () const

类 QMetaSequence :

QMetaSequence

fromContainer ()

类 QMetaType :

qsizetype	alignOf () const
QPartialOrdering	compare (const void * lhs , const void * rhs ) const
bool	equals (const void * lhs , const void * rhs ) const
bool	hasRegisteredDebugStreamOperator () const
bool	hasRegisteredMutableViewFunction ()
bool	view (QMetaType fromType , void * from , QMetaType toType , void * to )

类 QModelIndex :

void	multiData (QModelRoleDataSpan roleDataSpan ) const

类 QMultiHash :

QMultiHash<Key, T> &

unite (const QHash<Key, T> & other )

类 QMultiMap :

QMultiMap::iterator

erase (QMultiMap::const_iterator first , QMultiMap::const_iterator last )

类 QPersistentModelIndex :

void	multiData (QModelRoleDataSpan roleDataSpan ) const

类 QPointer :

T *	get () const

类 QProcess :

std::function<void ()>	childProcessModifier () const
void	setChildProcessModifier (const std::function<void ()> & modifier )
void	startCommand (const QString & 命令 , QIODeviceBase::OpenMode mode )

类 QRect :

QRect

span (const QPoint & p1 , const QPoint & p2 )

类 QRegularExpression :

QRegularExpression	fromWildcard (QStringView pattern , Qt::CaseSensitivity cs , QRegularExpression::WildcardConversionOptions options )
QRegularExpressionMatchIterator	globalMatch (QStringView subjectView , qsizetype offset , QRegularExpression::MatchType matchType , QRegularExpression::MatchOptions matchOptions ) const
QRegularExpressionMatch	match (QStringView subjectView , qsizetype offset , QRegularExpression::MatchType matchType , QRegularExpression::MatchOptions matchOptions ) const

类 QSharedDataPointer :

T *	get ()
const T *	get () const
void	reset (T * ptr )
T *	take ()

类 QSortFilterProxyModel :

void	autoAcceptChildRowsChanged (bool autoAcceptChildRows )
void	invalidateColumnsFilter ()
void	invalidateRowsFilter ()

类 QString :

qsizetype	count (QStringView str , Qt::CaseSensitivity cs ) const
QString	first (qsizetype n ) const
QString	fromLatin1 (QByteArrayView str )
QString	fromLocal8Bit (QByteArrayView str )
QString	fromUtf8 (QByteArrayView str )
QString	fromUtf8 (const char8_t * str , qsizetype size )
QString &	insert (qsizetype position , QStringView str )
QString	last (qsizetype n ) const
int	localeAwareCompare (QStringView other ) const
int	localeAwareCompare (QStringView s1 , QStringView s2 )
QString &	operator+= (QStringView str )
QString &	prepend (QStringView str )
QString	sliced (qsizetype pos , qsizetype n ) const
QString	sliced (qsizetype pos ) const
decltype(qTokenize(*this, std::forward<Needle>(needle), flags...))	tokenize (Needle && sep , Flags... flags ) const &
decltype(qTokenize(std::move(*this), std::forward<Needle>(needle), flags...))	tokenize (Needle && sep , Flags... flags ) &&

类 QStringListModel :

virtual bool

clearItemData (const QModelIndex & index ) override

类 QStringTokenizer :

decltype(QtPrivate::Tok::TokenizerResult<Haystack, Needle>({std::forward<Haystack>(h), std::forward<Needle>(n), flags...}))

qTokenize (Haystack && haystack , Needle && needle , Flags... flags )

类 QStringView :

QStringView::const_pointer	constData () const
qsizetype	count (QChar ch , Qt::CaseSensitivity cs ) const
qsizetype	count (QStringView str , Qt::CaseSensitivity cs ) const
QStringView	first (qsizetype n ) const
QStringView	last (qsizetype n ) const
QStringView	sliced (qsizetype pos , qsizetype n ) const
QStringView	sliced (qsizetype pos ) const
QList<QStringView>	split (QStringView sep , Qt::SplitBehavior behavior , Qt::CaseSensitivity cs ) const
QList<QStringView>	split (QChar sep , Qt::SplitBehavior behavior , Qt::CaseSensitivity cs ) const
QList<QStringView>	split (const QRegularExpression & re , Qt::SplitBehavior behavior ) const
CFStringRef	toCFString () const
double	toDouble (bool * ok ) const
float	toFloat (bool * ok ) const
int	toInt (bool * ok , int base ) const
long	toLong (bool * ok , int base ) const
qlonglong	toLongLong (bool * ok , int base ) const
NSString *	toNSString () const
short	toShort (bool * ok , int base ) const
uint	toUInt (bool * ok , int base ) const
ulong	toULong (bool * ok , int base ) const
qulonglong	toULongLong (bool * ok , int base ) const
ushort	toUShort (bool * ok , int base ) const
decltype(qTokenize(*this, std::forward<Needle>(needle), flags...))	tokenize (Needle && sep , Flags... flags ) const

类 QThreadPool :

bool	contains (const QThread * thread ) const

类 QTime :

QTime	fromString (QStringView string , Qt::DateFormat format )
QTime	fromString (QStringView string , QStringView format )
QTime	fromString (const QString & string , QStringView format )

类 QTypeRevision :

QDataStream &	operator<< (QDataStream & out , const QTypeRevision & revision )
QDataStream &	operator>> (QDataStream & in , QTypeRevision & revision )

类 QUnhandledException :

std::exception_ptr	exception () const
void	swap (QUnhandledException & other )

类 QVariant :

bool	canConvert (QMetaType type ) const
QPartialOrdering	compare (const QVariant & lhs , const QVariant & rhs )
bool	convert (QMetaType targetType )
QMetaType	metaType () const

类 QVarLengthArray :

QVarLengthArray<T, Prealloc> &

operator= (QVarLengthArray<T, Prealloc> && other )

类 QAction :

QList<QObject *>

associatedObjects () const

类 QIcon :

QPixmap

pixmap (const QSize & size , qreal devicePixelRatio , QIcon::Mode mode , QIcon::State state ) const

类 QImage :

QImage	convertedTo (QImage::Format format , Qt::ImageConversionFlags flags ) const &
QImage	convertedTo (QImage::Format format , Qt::ImageConversionFlags flags ) &&
QImage	fromHBITMAP (HBITMAP hbitmap )
QImage	fromHICON (HICON icon )
void	mirror (bool horizontal , bool vertical )
void	rgbSwap ()
HBITMAP	toHBITMAP () const
HICON	toHICON (const QImage & mask ) const

类 QImageIOHandler :

bool	allocateImage (QSize size , QImage::Format format , QImage * image )

类 QImageReader :

int	allocationLimit ()
void	setAllocationLimit (int mbLimit )

类 QInputEvent :

const QInputDevice *

device () const

类 QKeyEvent :

QKeyCombination

keyCombination () const

类 QPagedPaintDevice :

QPageRanges	pageRanges () const
virtual void	setPageRanges (const QPageRanges & ranges )

类 QRegion :

QRegion	fromHRGN (HRGN hrgn )
HRGN	toHRGN () const

类 QShortcut :

QList<QKeySequence>	keys () const
void	setKeys (QKeySequence::StandardKey key )
void	setKeys (const QList<QKeySequence> & keys )

类 QStandardItem :

virtual void

multiData (QModelRoleDataSpan roleDataSpan ) const

类 QSurfaceFormat :

void	setColorSpace (const QColorSpace & colorSpace )

类 QTextCharFormat :

qreal	baselineOffset () const
void	setBaselineOffset (qreal baseline )
void	setSubScriptBaseline (qreal baseline )
void	setSuperScriptBaseline (qreal baseline )
qreal	subScriptBaseline () const
qreal	superScriptBaseline () const

类 QTextDocument :

qreal	baselineOffset () const
void	setBaselineOffset (qreal baseline )
void	setSubScriptBaseline (qreal baseline )
void	setSuperScriptBaseline (qreal baseline )
qreal	subScriptBaseline () const
qreal	superScriptBaseline () const

类 QWindow :

QPointF	mapFromGlobal (const QPointF & pos ) const
QPointF	mapToGlobal (const QPointF & pos ) const
virtual void	paintEvent (QPaintEvent * ev )

类 QSslConfiguration :

bool	handshakeMustInterruptOnError () const
bool	missingCertificateIsFatal () const
void	setCiphers (const QString & ciphers )
void	setHandshakeMustInterruptOnError (bool interrupt )
void	setMissingCertificateIsFatal (bool cannotRecover )

类 QSslSocket :

void	continueInterruptedHandshake ()

类 QQmlApplicationEngine :

void	setExtraFileSelectors (const QStringList & extraFileSelectors )

类 QSGMetalTexture :

QSGTexture *

fromNative (int texture , QQuickWindow * window , const QSize & size , QQuickWindow::CreateTextureOptions options )

类 QSGD3D11Texture :

QSGTexture *

fromNative (void * texture , QQuickWindow * window , const QSize & size , QQuickWindow::CreateTextureOptions options )

类 QSGOpenGLTexture :

QSGTexture *

fromNative (GLuint textureId , QQuickWindow * window , const QSize & size , QQuickWindow::CreateTextureOptions options )

类 QSGVulkanTexture :

QSGTexture *

fromNative (VkImage image , VkImageLayout layout , QQuickWindow * window , const QSize & size , QQuickWindow::CreateTextureOptions options )

类 QQuickItem :

virtual void

geometryChange (const QRectF & newGeometry , const QRectF & oldGeometry )

类 QQuickRenderControl :

void	beginFrame ()
void	endFrame ()
bool	initialize ()
int	samples () const
void	setSamples (int sampleCount )
QQuickWindow *	window () const

类 QQuickWindow :

void	afterFrameEnd ()
void	beforeFrameBegin ()
QSGRendererInterface::GraphicsApi	graphicsApi ()
QQuickGraphicsConfiguration	graphicsConfiguration () const
QQuickGraphicsDevice	graphicsDevice () const
QQuickRenderTarget	renderTarget () const
void	setGraphicsConfiguration (const QQuickGraphicsConfiguration & config )
void	setGraphicsDevice (const QQuickGraphicsDevice & device )
void	setRenderTarget (const QQuickRenderTarget & target )

类 QSGRenderNode :

virtual void

prepare ()

类 QCanBusDeviceInfo :

QString

alias () const

类 QModbusReply :

QList<QModbusDevice::IntermediateError>

intermediateErrors () const

类 QSqlDriver :

virtual int

maximumIdentifierLength (QSqlDriver::IdentifierType type ) const

类 QSqlQuery :

QVariantList

boundValues () const

类 QAbstractItemView :

virtual void	initViewItemOption (QStyleOptionViewItem * option ) const
virtual QAbstractItemDelegate *	itemDelegateForIndex (const QModelIndex & index ) const

类 QGraphicsLayoutItem :

virtual bool

isEmpty () const

类 QHeaderView :

virtual void

initStyleOptionForIndex (QStyleOptionHeader * option , int logicalIndex ) const

类 QLabel :

QPicture

picture () const

类 QWidget :

QPointF	mapFrom (const QWidget * parent , const QPointF & pos ) const
QPointF	mapFromGlobal (const QPointF & pos ) const
QPointF	mapFromParent (const QPointF & pos ) const
QPointF	mapTo (const QWidget * parent , const QPointF & pos ) const
QPointF	mapToGlobal (const QPointF & pos ) const
QPointF	mapToParent (const QPointF & pos ) const

名称空间中的新函数

void	resetOpenGLState ()
QTaskBuilder<Task>	task (Task && task )

新全局函数

long double	qDegreesToRadians (long double degrees )
long double	qRadiansToDegrees (long double radians )

新宏

	QT_IMPLICIT_QCHAR_CONSTRUCTION
	QT_IMPLICIT_QFILEINFO_CONSTRUCTION
	Q_MOC_INCLUDE
	Q_OBJECT_BINDABLE_PROPERTY ( containingClass , type , name , signal )
	Q_OBJECT_BINDABLE_PROPERTY_WITH_ARGS ( containingClass , type , name , initialvalue , signal )

新枚举类型

enum	IntermediateError { ResponseCrcError, ResponseRequestMismatch }
enum	WildcardConversionOption { DefaultWildcardConversion, UnanchoredWildcardConversion }
enum class	AlertLevel { Warning, Fatal, Unknown }
enum class	AlertType { CloseNotify, UnexpectedMessage, BadRecordMac, RecordOverflow, DecompressionFailure, …, UnknownAlertMessage }
enum class	Launch { Sync, Async, Inherit }

新类型别名

	iterator
	QPair
	iterator

新特性

• sortIndex : const
• readOnly : const
• autoAcceptChildRows :
• additionalShmFormats : const

新的变量

MacOSBigSur

新 QML 类型

C

CoreSettings

G

GeometryView

Q

QtTextInputMethodManager

新 QML 特性

	additionalShmFormats
	font
	palette
	palette
	sortIndex
	tonemapMode