# QReadWriteLock Class Reference
## [[QtCore](index.htm) module]
该QReadWriteLock类提供的读写锁。[More...](#details)
### Types
* `enum RecursionMode { NonRecursive, Recursive }`
### Methods
* `__init__ (self)`
* `__init__ (self, RecursionMode recursionMode)`
* `lockForRead (self)`
* `lockForWrite (self)`
* `bool tryLockForRead (self)`
* `bool tryLockForRead (self, int timeout)`
* `bool tryLockForWrite (self)`
* `bool tryLockForWrite (self, int timeout)`
* `unlock (self)`
* * *
## Detailed Description
该QReadWriteLock类提供的读写锁。
读写锁是一个同步工具，用于保护可用于读取和写入访问的资源。如果你想允许多个线程同时有只读访问这个类型的锁是有用的，但只要有一个线程要写入的资源，所有其它线程必须被阻止，直到写入完成。
在许多情况下， QReadWriteLock是一个直接竞争者[QMutex](qmutex.html)。 QReadWriteLock是一个不错的选择，如果有许多并发读取和写入发生很少。
例如：
```
QReadWriteLock lock;
void ReaderThread.run()
{
...
lock.lockForRead();
read_file();
lock.unlock();
...
}
void WriterThread.run()
{
...
lock.lockForWrite();
write_file();
lock.unlock();
...
}
```
以确保作家不是由读者永远阻塞，读者试图获取锁不会如果有阻塞作家等待访问，即使锁定目前仅由其它读者访问成功。此外，如果该锁由一个作家访问和另一位作家进来，那笔者将优先于该也可能会等待任何读者。
喜欢[QMutex](qmutex.html)，一个QReadWriteLock可以在构建时被递归锁定由同一个线程[QReadWriteLock.RecursionMode](qreadwritelock.html#RecursionMode-enum)。在这种情况下，[unlock](qreadwritelock.html#unlock)（ ）必须被调用的次数相同[lockForWrite](qreadwritelock.html#lockForWrite)（）或[lockForRead](qreadwritelock.html#lockForRead)（ ）被调用。需要注意的是试图以递归方式锁定，也就是说，它是不可能的读锁，在已经锁定写（反之亦然）一个线程，当锁定类型不能改变。
* * *
## Type Documentation
```
QReadWriteLock.RecursionMode
```
| Constant | Value | Description |
| --- | --- | --- |
| `QReadWriteLock.Recursive` | `1` | 在这种模式下，一个线程可以锁定同一[QReadWriteLock](qreadwritelock.html)多次与互斥不会被解锁，直到相应数量的[unlock](qreadwritelock.html#unlock)（ ）的调用而制定的。 |
| `QReadWriteLock.NonRecursive` | `0` | 在这种模式下，一个线程可能仅锁定[QReadWriteLock](qreadwritelock.html)一次。 |
这个枚举被引入或修改的Qt 4.4 。
**See also** [QReadWriteLock](qreadwritelock.html#QReadWriteLock)（ ） 。
* * *
## Method Documentation
```
QReadWriteLock.__init__ (self)
```
构造一个[QReadWriteLock](qreadwritelock.html)在对象[NonRecursive](qreadwritelock.html#RecursionMode-enum)模式。
**See also** [lockForRead](qreadwritelock.html#lockForRead)（）和[lockForWrite](qreadwritelock.html#lockForWrite)（ ） 。
```
QReadWriteLock.__init__ (self, RecursionMode recursionMode)
```
构造一个[QReadWriteLock](qreadwritelock.html)在给定的对象_recursionMode_。
此功能被引入Qt的4.4 。
**See also** [lockForRead](qreadwritelock.html#lockForRead)（ ）[lockForWrite](qreadwritelock.html#lockForWrite)（）和[RecursionMode](qreadwritelock.html#RecursionMode-enum)。
```
QReadWriteLock.lockForRead (self)
```
锁读锁。此函数将阻塞当前线程，如果任何线程（包括当前）已锁定用于写入。
**See also** [unlock](qreadwritelock.html#unlock)（ ）[lockForWrite](qreadwritelock.html#lockForWrite)（）和[tryLockForRead](qreadwritelock.html#tryLockForRead)（ ） 。
```
QReadWriteLock.lockForWrite (self)
```
锁写锁。此函数将阻塞当前线程，如果另一个线程已锁定读取或写入。
**See also** [unlock](qreadwritelock.html#unlock)（ ）[lockForRead](qreadwritelock.html#lockForRead)（）和[tryLockForWrite](qreadwritelock.html#tryLockForWrite)（ ） 。
```
bool QReadWriteLock.tryLockForRead (self)
```
尝试读锁。如果获得了锁，这个函数返回True ，否则返回，而不是等待该锁虚假变得可用，也就是说，它不会阻塞。
如果另一个线程已锁定用于写入的锁定尝试将会失败。
如果获得了锁，该锁必须被解锁[unlock](qreadwritelock.html#unlock)（ ）之前，另一个线程可以成功地将其锁定。
**See also** [unlock](qreadwritelock.html#unlock)（）和[lockForRead](qreadwritelock.html#lockForRead)（ ） 。
```
bool QReadWriteLock.tryLockForRead (self, int timeout)
```
这是一个重载函数。
尝试读锁。如果获得了锁这个函数返回True，否则返回False 。如果另一个线程已锁定的文笔，这个函数将等待最多_timeout_毫秒为锁变得可用。
注意：传递一个负数作为_timeout_相当于调用[lockForRead](qreadwritelock.html#lockForRead)（ ） ，即该函数将一直等待，直到锁可以锁定读数时_timeout_是负的。
如果获得了锁，该锁必须被解锁[unlock](qreadwritelock.html#unlock)（ ）之前，另一个线程可以成功地将其锁定。
**See also** [unlock](qreadwritelock.html#unlock)（）和[lockForRead](qreadwritelock.html#lockForRead)（ ） 。
```
bool QReadWriteLock.tryLockForWrite (self)
```
尝试写锁。如果获得了锁，则该函数返回True，否则，它会立即返回False 。
如果另一个线程已锁定用于读取或写入锁定的尝试将会失败。
如果获得了锁，该锁必须被解锁[unlock](qreadwritelock.html#unlock)（ ）之前，另一个线程可以成功地将其锁定。
**See also** [unlock](qreadwritelock.html#unlock)（）和[lockForWrite](qreadwritelock.html#lockForWrite)（ ） 。
```
bool QReadWriteLock.tryLockForWrite (self, int timeout)
```
这是一个重载函数。
尝试写锁。如果获得了锁这个函数返回True，否则返回False 。如果另一个线程已锁定用于读取或写入时，此功能会等待最多_timeout_毫秒为锁变得可用。
注意：传递一个负数作为_timeout_相当于调用[lockForWrite](qreadwritelock.html#lockForWrite)（ ） ，即该函数将一直等待，直到锁可以锁定写入时_timeout_是负的。
如果获得了锁，该锁必须被解锁[unlock](qreadwritelock.html#unlock)（ ）之前，另一个线程可以成功地将其锁定。
**See also** [unlock](qreadwritelock.html#unlock)（）和[lockForWrite](qreadwritelock.html#lockForWrite)（ ） 。
```
QReadWriteLock.unlock (self)
```
解除锁定。
试图解锁未锁定的锁是一个错误，将导致程序终止。
**See also** [lockForRead](qreadwritelock.html#lockForRead)（ ）[lockForWrite](qreadwritelock.html#lockForWrite)（ ）[tryLockForRead](qreadwritelock.html#tryLockForRead)（）和[tryLockForWrite](qreadwritelock.html#tryLockForWrite)（ ） 。
- PyQt4 中文文档
- PyQt Class Reference
- QAbstractAnimation Class Reference
- QAbstractButton Class Reference
- QAbstractEventDispatcher Class Reference
- QAbstractExtensionFactory Class Reference
- QAbstractExtensionManager Class Reference
- QAbstractFileEngine Class Reference
- QAbstractFileEngineHandler Class Reference
- QAbstractFileEngineIterator Class Reference
- QAbstractFormBuilder Class Reference
- QAbstractGraphicsShapeItem Class Reference
- QAbstractItemDelegate Class Reference
- QAbstractItemModel Class Reference
- QAbstractItemView Class Reference
- QAbstractListModel Class Reference
- QAbstractMessageHandler Class Reference
- QAbstractNetworkCache Class Reference
- QAbstractPrintDialog Class Reference
- QAbstractProxyModel Class Reference
- QAbstractScrollArea Class Reference
- QAbstractSlider Class Reference
- QAbstractSocket Class Reference
- QAbstractSpinBox Class Reference
- QAbstractState Class Reference
- QAbstractTableModel Class Reference
- QAbstractTextDocumentLayout Class Reference
- QAbstractTransition Class Reference
- QAbstractUriResolver Class Reference
- QAbstractVideoBuffer Class Reference
- QAbstractVideoSurface Class Reference
- QAbstractXmlNodeModel Class Reference
- QAbstractXmlReceiver Class Reference
- QAction Class Reference
- QActionEvent Class Reference
- QActionGroup Class Reference
- QAnimationGroup Class Reference
- QApplication Class Reference
- QAssistantClient Class Reference
- QAudio Class Reference
- QAudioDeviceInfo Class Reference
- QAudioFormat Class Reference
- QAudioInput Class Reference
- QAudioOutput Class Reference
- QAuthenticator Class Reference
- QBasicTimer Class Reference
- QBitArray Class Reference
- QBitmap Class Reference
- QBoxLayout Class Reference
- QBrush Class Reference
- QBuffer Class Reference
- QButtonGroup Class Reference
- QByteArray Class Reference
- QByteArrayMatcher Class Reference
- QCalendarWidget Class Reference
- QChar Class Reference
- QCheckBox Class Reference
- QChildEvent Class Reference
- QClipboard Class Reference
- QCloseEvent Class Reference
- QColor Class Reference
- QColorDialog Class Reference
- QColumnView Class Reference
- QComboBox Class Reference
- QCommandLinkButton Class Reference
- QCommonStyle Class Reference
- QCompleter Class Reference
- QConicalGradient Class Reference
- QContextMenuEvent Class Reference
- QCoreApplication Class Reference
- QCryptographicHash Class Reference
- QCursor Class Reference
- QDataStream Class Reference
- QDataWidgetMapper Class Reference
- QDate Class Reference
- QDateEdit Class Reference
- QDateTime Class Reference
- QDateTimeEdit Class Reference
- QDBus Class Reference
- QDBusAbstractAdaptor Class Reference
- QDBusAbstractInterface Class Reference
- QDBusArgument Class Reference
- QDBusConnection Class Reference
- QDBusConnectionInterface Class Reference
- QDBusError Class Reference
- QDBusInterface Class Reference
- QDBusMessage Class Reference
- QDBusObjectPath Class Reference
- QDBusPendingCall Class Reference
- QDBusPendingCallWatcher Class Reference
- QDBusPendingReply Class Reference
- QDBusReply Class Reference
- QDBusServiceWatcher Class Reference
- QDBusSignature Class Reference
- QDBusUnixFileDescriptor Class Reference
- QDBusVariant Class Reference
- QDeclarativeComponent Class Reference
- QDeclarativeContext Class Reference
- QDeclarativeEngine Class Reference
- QDeclarativeError Class Reference
- QDeclarativeExpression Class Reference
- QDeclarativeExtensionPlugin Class Reference
- QDeclarativeImageProvider Class Reference
- QDeclarativeItem Class Reference
- QDeclarativeListReference Class Reference
- QDeclarativeNetworkAccessManagerFactory Class Reference
- QDeclarativeParserStatus Class Reference
- QDeclarativeProperty Class Reference
- QDeclarativePropertyMap Class Reference
- QDeclarativePropertyValueSource Class Reference
- QDeclarativeScriptString Class Reference
- QDeclarativeView Class Reference
- QDesignerActionEditorInterface Class Reference
- QDesignerContainerExtension Class Reference
- QDesignerCustomWidgetCollectionInterface Class Reference
- QDesignerCustomWidgetInterface Class Reference
- QDesignerFormEditorInterface Class Reference
- QDesignerFormWindowCursorInterface Class Reference
- QDesignerFormWindowInterface Class Reference
- QDesignerFormWindowManagerInterface Class Reference
- QDesignerMemberSheetExtension Class Reference
- QDesignerObjectInspectorInterface Class Reference
- QDesignerPropertyEditorInterface Class Reference
- QDesignerPropertySheetExtension Class Reference
- QDesignerTaskMenuExtension Class Reference
- QDesignerWidgetBoxInterface Class Reference
- QDesktopServices Class Reference
- QDesktopWidget Class Reference
- QDial Class Reference
- QDialog Class Reference
- QDialogButtonBox Class Reference
- QDir Class Reference
- QDirIterator Class Reference
- QDirModel Class Reference
- QDockWidget Class Reference
- QDomAttr Class Reference
- QDomCDATASection Class Reference
- QDomCharacterData Class Reference
- QDomComment Class Reference
- QDomDocument Class Reference
- QDomDocumentFragment Class Reference
- QDomDocumentType Class Reference
- QDomElement Class Reference
- QDomEntity Class Reference
- QDomEntityReference Class Reference
- QDomImplementation Class Reference
- QDomNamedNodeMap Class Reference
- QDomNode Class Reference
- QDomNodeList Class Reference
- QDomNotation Class Reference
- QDomProcessingInstruction Class Reference
- QDomText Class Reference
- QDoubleSpinBox Class Reference
- QDoubleValidator Class Reference
- QDrag Class Reference
- QDragEnterEvent Class Reference
- QDragLeaveEvent Class Reference
- QDragMoveEvent Class Reference
- QDropEvent Class Reference
- QDynamicPropertyChangeEvent Class Reference
- QEasingCurve Class Reference
- QElapsedTimer Class Reference
- QErrorMessage Class Reference
- QEvent Class Reference
- QEventLoop Class Reference
- QEventTransition Class Reference
- QExtensionFactory Class Reference
- QExtensionManager Class Reference
- QFile Class Reference
- QFileDialog Class Reference
- QFileIconProvider Class Reference
- QFileInfo Class Reference
- QFileOpenEvent Class Reference
- QFileSystemModel Class Reference
- QFileSystemWatcher Class Reference
- QFinalState Class Reference
- QFocusEvent Class Reference
- QFocusFrame Class Reference
- QFont Class Reference
- QFontComboBox Class Reference
- QFontDatabase Class Reference
- QFontDialog Class Reference
- QFontInfo Class Reference
- QFontMetrics Class Reference
- QFontMetricsF Class Reference
- QFormBuilder Class Reference
- QFormLayout Class Reference
- QFrame Class Reference
- QFSFileEngine Class Reference
- QFtp Class Reference
- QGenericArgument Class Reference
- QGenericReturnArgument Class Reference
- QGesture Class Reference
- QGestureEvent Class Reference
- QGestureRecognizer Class Reference
- QGL Class Reference
- QGLBuffer Class Reference
- QGLColormap Class Reference
- QGLContext Class Reference
- QGLFormat Class Reference
- QGLFramebufferObject Class Reference
- QGLFramebufferObjectFormat Class Reference
- QGLPixelBuffer Class Reference
- QGLShader Class Reference
- QGLShaderProgram Class Reference
- QGLWidget Class Reference
- QGlyphRun Class Reference
- QGradient Class Reference
- QGraphicsAnchor Class Reference
- QGraphicsAnchorLayout Class Reference
- QGraphicsBlurEffect Class Reference
- QGraphicsColorizeEffect Class Reference
- QGraphicsDropShadowEffect Class Reference
- QGraphicsEffect Class Reference
- QGraphicsEllipseItem Class Reference
- QGraphicsGridLayout Class Reference
- QGraphicsItem Class Reference
- QGraphicsItemAnimation Class Reference
- QGraphicsItemGroup Class Reference
- QGraphicsLayout Class Reference
- QGraphicsLayoutItem Class Reference
- QGraphicsLinearLayout Class Reference
- QGraphicsLineItem Class Reference
- QGraphicsObject Class Reference
- QGraphicsOpacityEffect Class Reference
- QGraphicsPathItem Class Reference
- QGraphicsPixmapItem Class Reference
- QGraphicsPolygonItem Class Reference
- QGraphicsProxyWidget Class Reference
- QGraphicsRectItem Class Reference
- QGraphicsRotation Class Reference
- QGraphicsScale Class Reference
- QGraphicsScene Class Reference
- QGraphicsSceneContextMenuEvent Class Reference
- QGraphicsSceneDragDropEvent Class Reference
- QGraphicsSceneEvent Class Reference
- QGraphicsSceneHelpEvent Class Reference
- QGraphicsSceneHoverEvent Class Reference
- QGraphicsSceneMouseEvent Class Reference
- QGraphicsSceneMoveEvent Class Reference
- QGraphicsSceneResizeEvent Class Reference
- QGraphicsSceneWheelEvent Class Reference
- QGraphicsSimpleTextItem Class Reference
- QGraphicsSvgItem Class Reference
- QGraphicsTextItem Class Reference
- QGraphicsTransform Class Reference
- QGraphicsView Class Reference
- QGraphicsWebView Class Reference
- QGraphicsWidget Class Reference
- QGridLayout Class Reference
- QGroupBox Class Reference
- QHBoxLayout Class Reference
- QHeaderView Class Reference
- QHelpContentItem Class Reference
- QHelpContentModel Class Reference
- QHelpContentWidget Class Reference
- QHelpEngine Class Reference
- QHelpEngineCore Class Reference
- QHelpEvent Class Reference
- QHelpIndexModel Class Reference
- QHelpIndexWidget Class Reference
- QHelpSearchEngine Class Reference
- QHelpSearchQuery Class Reference
- QHelpSearchQueryWidget Class Reference
- QHelpSearchResultWidget Class Reference
- QHideEvent Class Reference
- QHistoryState Class Reference
- QHostAddress Class Reference
- QHostInfo Class Reference
- QHoverEvent Class Reference
- QHttp Class Reference
- QHttpHeader Class Reference
- QHttpMultiPart Class Reference
- QHttpPart Class Reference
- QHttpRequestHeader Class Reference
- QHttpResponseHeader Class Reference
- QIcon Class Reference
- QIconDragEvent Class Reference
- QIconEngine Class Reference
- QIconEngineV2 Class Reference
- QIdentityProxyModel Class Reference
- QImage Class Reference
- QImageIOHandler Class Reference
- QImageReader Class Reference
- QImageWriter Class Reference
- QInputContext Class Reference
- QInputContextFactory Class Reference
- QInputDialog Class Reference
- QInputEvent Class Reference
- QInputMethodEvent Class Reference
- QIntValidator Class Reference
- QIODevice Class Reference
- QItemDelegate Class Reference
- QItemEditorCreatorBase Class Reference
- QItemEditorFactory Class Reference
- QItemSelection Class Reference
- QItemSelectionModel Class Reference
- QItemSelectionRange Class Reference
- QKeyEvent Class Reference
- QKeyEventTransition Class Reference
- QKeySequence Class Reference
- QLabel Class Reference
- QLatin1Char Class Reference
- QLatin1String Class Reference
- QLayout Class Reference
- QLayoutItem Class Reference
- QLCDNumber Class Reference
- QLibrary Class Reference
- QLibraryInfo Class Reference
- QLine Class Reference
- QLinearGradient Class Reference
- QLineEdit Class Reference
- QLineF Class Reference
- QListView Class Reference
- QListWidget Class Reference
- QListWidgetItem Class Reference
- QLocale Class Reference
- QLocalServer Class Reference
- QLocalSocket Class Reference
- QMainWindow Class Reference
- QMargins Class Reference
- QMatrix Class Reference
- QMatrix2x2 Class Reference
- QMatrix2x3 Class Reference
- QMatrix2x4 Class Reference
- QMatrix3x2 Class Reference
- QMatrix3x3 Class Reference
- QMatrix3x4 Class Reference
- QMatrix4x2 Class Reference
- QMatrix4x3 Class Reference
- QMatrix4x4 Class Reference
- QMdiArea Class Reference
- QMdiSubWindow Class Reference
- QMenu Class Reference
- QMenuBar Class Reference
- QMessageBox Class Reference
- QMetaClassInfo Class Reference
- QMetaEnum Class Reference
- QMetaMethod Class Reference
- QMetaObject Class Reference
- QMetaProperty Class Reference
- QMetaType Class Reference
- QMimeData Class Reference
- QMimeSource Class Reference
- QModelIndex Class Reference
- QMouseEvent Class Reference
- QMouseEventTransition Class Reference
- QMoveEvent Class Reference
- QMovie Class Reference
- QMutex Class Reference
- QMutexLocker Class Reference
- QNetworkAccessManager Class Reference
- QNetworkAddressEntry Class Reference
- QNetworkCacheMetaData Class Reference
- QNetworkConfiguration Class Reference
- QNetworkConfigurationManager Class Reference
- QNetworkCookie Class Reference
- QNetworkCookieJar Class Reference
- QNetworkDiskCache Class Reference
- QNetworkInterface Class Reference
- QNetworkProxy Class Reference
- QNetworkProxyFactory Class Reference
- QNetworkProxyQuery Class Reference
- QNetworkReply Class Reference
- QNetworkRequest Class Reference
- QNetworkSession Class Reference
- QObject Class Reference
- QObjectCleanupHandler Class Reference
- QPageSetupDialog Class Reference
- QPaintDevice Class Reference
- QPaintEngine Class Reference
- QPaintEngineState Class Reference
- QPainter Class Reference
- QPainterPath Class Reference
- QPainterPathStroker Class Reference
- QPaintEvent Class Reference
- QPalette Class Reference
- QPanGesture Class Reference
- QParallelAnimationGroup Class Reference
- QPauseAnimation Class Reference
- QPen Class Reference
- QPersistentModelIndex Class Reference
- QPicture Class Reference
- QPictureIO Class Reference
- QPinchGesture Class Reference
- QPixmap Class Reference
- QPixmapCache Class Reference
- QPlainTextDocumentLayout Class Reference
- QPlainTextEdit Class Reference
- QPluginLoader Class Reference
- QPoint Class Reference
- QPointF Class Reference
- QPolygon Class Reference
- QPolygonF Class Reference
- QPrintDialog Class Reference
- QPrintEngine Class Reference
- QPrinter Class Reference
- QPrinterInfo Class Reference
- QPrintPreviewDialog Class Reference
- QPrintPreviewWidget Class Reference
- QProcess Class Reference
- QProcessEnvironment Class Reference
- QProgressBar Class Reference
- QProgressDialog Class Reference
- QPropertyAnimation Class Reference
- QProxyModel Class Reference
- QPushButton Class Reference
- QPyDeclarativePropertyValueSource Class Reference
- QPyDesignerContainerExtension Class Reference
- QPyDesignerCustomWidgetCollectionPlugin Class Reference
- QPyDesignerCustomWidgetPlugin Class Reference
- QPyDesignerMemberSheetExtension Class Reference
- QPyDesignerPropertySheetExtension Class Reference
- QPyDesignerTaskMenuExtension Class Reference
- QPyNullVariant Class Reference
- QPyTextObject Class Reference
- QQuaternion Class Reference
- QRadialGradient Class Reference
- QRadioButton Class Reference
- QRawFont Class Reference
- QReadLocker Class Reference
- QReadWriteLock Class Reference
- QRect Class Reference
- QRectF Class Reference
- QRegExp Class Reference
- QRegExpValidator Class Reference
- QRegion Class Reference
- QResizeEvent Class Reference
- QResource Class Reference
- QRubberBand Class Reference
- QRunnable Class Reference
- QScriptClass Class Reference
- QScriptClassPropertyIterator Class Reference
- QScriptContext Class Reference
- QScriptContextInfo Class Reference
- QScriptEngine Class Reference
- QScriptEngineAgent Class Reference
- QScriptEngineDebugger Class Reference
- QScriptString Class Reference
- QScriptSyntaxCheckResult Class Reference
- QScriptValue Class Reference
- QScriptValueIterator Class Reference
- QScrollArea Class Reference
- QScrollBar Class Reference
- QSemaphore Class Reference
- QSequentialAnimationGroup Class Reference
- QSessionManager Class Reference
- QSettings Class Reference
- QSharedMemory Class Reference
- QShortcut Class Reference
- QShortcutEvent Class Reference
- QShowEvent Class Reference
- QSignalMapper Class Reference
- QSignalTransition Class Reference
- QSimpleXmlNodeModel Class Reference
- QSize Class Reference
- QSizeF Class Reference
- QSizeGrip Class Reference
- QSizePolicy Class Reference
- QSlider Class Reference
- QSocketNotifier Class Reference
- QSortFilterProxyModel Class Reference
- QSound Class Reference
- QSourceLocation Class Reference
- QSpacerItem Class Reference
- QSpinBox Class Reference
- QSplashScreen Class Reference
- QSplitter Class Reference
- QSplitterHandle Class Reference
- QSql Class Reference
- QSqlDatabase Class Reference
- QSqlDriver Class Reference
- QSqlDriverCreatorBase Class Reference
- QSqlError Class Reference
- QSqlField Class Reference
- QSqlIndex Class Reference
- QSqlQuery Class Reference
- QSqlQueryModel Class Reference
- QSqlRecord Class Reference
- QSqlRelation Class Reference
- QSqlRelationalDelegate Class Reference
- QSqlRelationalTableModel Class Reference
- QSqlResult Class Reference
- QSqlTableModel Class Reference
- Qt4.7文档翻译：Qt样式单参考,Qt Style Sheets Reference
- QSsl Class Reference
- QSslCertificate Class Reference
- QSslCipher Class Reference
- QSslConfiguration Class Reference
- QSslError Class Reference
- QSslKey Class Reference
- QSslSocket Class Reference
- QStackedLayout Class Reference
- QStackedWidget Class Reference
- QStandardItem Class Reference
- QStandardItemModel Class Reference
- QState Class Reference
- QStateMachine Class Reference
- QStaticText Class Reference
- QStatusBar Class Reference
- QStatusTipEvent Class Reference
- QString Class Reference
- QStringList Class Reference
- QStringListModel Class Reference
- QStringMatcher Class Reference
- QStringRef Class Reference
- QStyle Class Reference
- QStyledItemDelegate Class Reference
- QStyleFactory Class Reference
- QStyleHintReturn Class Reference
- QStyleHintReturnMask Class Reference
- QStyleHintReturnVariant Class Reference
- QStyleOption Class Reference
- QStyleOptionButton Class Reference
- QStyleOptionComboBox Class Reference
- QStyleOptionComplex Class Reference
- QStyleOptionDockWidget Class Reference
- QStyleOptionDockWidgetV2 Class Reference
- QStyleOptionFocusRect Class Reference
- QStyleOptionFrame Class Reference
- QStyleOptionFrameV2 Class Reference
- QStyleOptionFrameV3 Class Reference
- QStyleOptionGraphicsItem Class Reference
- QStyleOptionGroupBox Class Reference
- QStyleOptionHeader Class Reference
- QStyleOptionMenuItem Class Reference
- QStyleOptionProgressBar Class Reference
- QStyleOptionProgressBarV2 Class Reference
- QStyleOptionRubberBand Class Reference
- QStyleOptionSizeGrip Class Reference
- QStyleOptionSlider Class Reference
- QStyleOptionSpinBox Class Reference
- QStyleOptionTab Class Reference
- QStyleOptionTabBarBase Class Reference
- QStyleOptionTabBarBaseV2 Class Reference
- QStyleOptionTabV2 Class Reference
- QStyleOptionTabV3 Class Reference
- QStyleOptionTabWidgetFrame Class Reference
- QStyleOptionTabWidgetFrameV2 Class Reference
- QStyleOptionTitleBar Class Reference
- QStyleOptionToolBar Class Reference
- QStyleOptionToolBox Class Reference
- QStyleOptionToolBoxV2 Class Reference
- QStyleOptionToolButton Class Reference
- QStyleOptionViewItem Class Reference
- QStyleOptionViewItemV2 Class Reference
- QStyleOptionViewItemV3 Class Reference
- QStyleOptionViewItemV4 Class Reference
- QStylePainter Class Reference
- QSvgGenerator Class Reference
- QSvgRenderer Class Reference
- QSvgWidget Class Reference
- QSwipeGesture Class Reference
- QSyntaxHighlighter Class Reference
- QSysInfo Class Reference
- QSystemLocale Class Reference
- QSystemSemaphore Class Reference
- QSystemTrayIcon Class Reference
- Qt Class Reference
- QTabBar Class Reference
- QTabletEvent Class Reference
- QTableView Class Reference
- QTableWidget Class Reference
- QTableWidgetItem Class Reference
- QTableWidgetSelectionRange Class Reference
- QTabWidget Class Reference
- QTapAndHoldGesture Class Reference
- QTapGesture Class Reference
- QTcpServer Class Reference
- QTcpSocket Class Reference
- QTemporaryFile Class Reference
- QTest Class Reference
- QTextBlock Class Reference
- QTextBlockFormat Class Reference
- QTextBlockGroup Class Reference
- QTextBlockUserData Class Reference
- QTextBoundaryFinder Class Reference
- QTextBrowser Class Reference
- QTextCharFormat Class Reference
- QTextCodec Class Reference
- QTextCursor Class Reference
- QTextDecoder Class Reference
- QTextDocument Class Reference
- QTextDocumentFragment Class Reference
- QTextDocumentWriter Class Reference
- QTextEdit Class Reference
- QTextEncoder Class Reference
- QTextFormat Class Reference
- QTextFragment Class Reference
- QTextFrame Class Reference
- QTextFrameFormat Class Reference
- QTextImageFormat Class Reference
- QTextInlineObject Class Reference
- QTextItem Class Reference
- QTextLayout Class Reference
- QTextLength Class Reference
- QTextLine Class Reference
- QTextList Class Reference
- QTextListFormat Class Reference
- QTextObject Class Reference
- QTextObjectInterface Class Reference
- QTextOption Class Reference
- QTextStream Class Reference
- QTextTable Class Reference
- QTextTableCell Class Reference
- QTextTableCellFormat Class Reference
- QTextTableFormat Class Reference
- QThread Class Reference
- QThreadPool Class Reference
- QTime Class Reference
- QTimeEdit Class Reference
- QTimeLine Class Reference
- QTimer Class Reference
- QTimerEvent Class Reference
- QToolBar Class Reference
- QToolBox Class Reference
- QToolButton Class Reference
- QToolTip Class Reference
- QTouchEvent Class Reference
- Reference
- QTransform Class Reference
- QTranslator Class Reference
- QTreeView Class Reference
- QTreeWidget Class Reference
- QTreeWidgetItem Class Reference
- QTreeWidgetItemIterator Class Reference
- QUdpSocket Class Reference
- QUndoCommand Class Reference
- QUndoGroup Class Reference
- QUndoStack Class Reference
- QUndoView Class Reference
- QUrl Class Reference
- QUrlInfo Class Reference
- QUuid Class Reference
- QValidator Class Reference
- QVariant Class Reference
- QVariantAnimation Class Reference
- QVBoxLayout Class Reference
- QVector2D Class Reference
- QVector3D Class Reference
- QVector4D Class Reference
- QVideoFrame Class Reference
- QVideoSurfaceFormat Class Reference
- QWaitCondition Class Reference
- QWebDatabase Class Reference
- QWebElement Class Reference
- QWebElementCollection Class Reference
- QWebFrame Class Reference
- QWebHistory Class Reference
- QWebHistoryInterface Class Reference
- QWebHistoryItem Class Reference
- QWebHitTestResult Class Reference
- QWebInspector Class Reference
- QWebPage Class Reference
- QWebPluginFactory Class Reference
- QWebSecurityOrigin Class Reference
- QWebSettings Class Reference
- QWebView Class Reference
- QWhatsThis Class Reference
- QWhatsThisClickedEvent Class Reference
- QWheelEvent Class Reference
- QWidget Class Reference
- QWidgetAction Class Reference
- QWidgetItem Class Reference
- QWindowStateChangeEvent Class Reference
- QWizard Class Reference
- QWizardPage Class Reference
- QWorkspace Class Reference
- QWriteLocker Class Reference
- QX11EmbedContainer Class Reference
- QX11EmbedWidget Class Reference
- QX11Info Class Reference
- QXmlAttributes Class Reference
- QXmlContentHandler Class Reference
- QXmlDeclHandler Class Reference
- QXmlDefaultHandler Class Reference
- QXmlDTDHandler Class Reference
- QXmlEntityResolver Class Reference
- QXmlErrorHandler Class Reference
- QXmlFormatter Class Reference
- QXmlInputSource Class Reference
- QXmlItem Class Reference
- QXmlLexicalHandler Class Reference
- QXmlLocator Class Reference
- QXmlName Class Reference
- QXmlNamePool Class Reference
- QXmlNamespaceSupport Class Reference
- QXmlNodeModelIndex Class Reference
- QXmlParseException Class Reference
- QXmlQuery Class Reference
- QXmlReader Class Reference
- QXmlResultItems Class Reference
- QXmlSchema Class Reference
- QXmlSchemaValidator Class Reference
- QXmlSerializer Class Reference
- QXmlSimpleReader Class Reference
- QXmlStreamAttribute Class Reference
- QXmlStreamAttributes Class Reference
- QXmlStreamEntityDeclaration Class Reference
- QXmlStreamEntityResolver Class Reference
- QXmlStreamNamespaceDeclaration Class Reference
- QXmlStreamNotationDeclaration Class Reference
- QXmlStreamReader Class Reference
- QXmlStreamWriter Class Reference