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Qt's Main Classes

These are the most frequently used Qt classes. For the complete list see Qt's Classes.

A  QAbstractItemDelegate F  QFile QList QRegExp QTextCursor
QAbstractItemModel QFileDialog QListView QResource QTextDocument
QAbstractItemView QFlags QListWidget QRubberBand QTextEdit
QAccessible QFocusFrame QLocale S  QScrollArea QThread
QAction QFont M  QMainWindow QSet QThreadStorage
QApplication QFontDialog QMap QSettings QTime
B  QButtonGroup QFrame QMenu QSharedDataPointer QTimeEdit
QByteArray QFtp QMenuBar QShortcut QTimer
C  QCache G  QGLWidget QMessageBox QSignalMapper QToolBar
QCheckBox QGraphicsScene QModelIndex QSlider QToolBox
QClipboard QGraphicsView QMultiHash QSound QToolButton
QColor QGridLayout QMultiMap QSpinBox QToolTip
QColorDialog QGroupBox QMutex QSplashScreen QTranslator
QComboBox H  QHash O  QObject QSplitter QTreeView
QCoreApplication QHBoxLayout P  QPainter QSqlDatabase QTreeWidget
QCursor QHeaderView QPalette QSqlQuery U  QUrl
D  QDataStream QHttp QPen QStack V  QValidator
QDate I  QIcon QPicture QStackedLayout QVariant
QDateEdit QImage QPixmap QStackedWidget QVBoxLayout
QDateTime QInputDialog QPluginLoader QStatusBar QVector
QDateTimeEdit QItemDelegate QPointer QString W  QWhatsThis
QDesktopWidget K  QKeySequence QPrinter QStringList QWidget
QDial L  QLabel QProcess QStringListModel QWidgetAction
QDialog QLCDNumber QProgressBar T  QTabBar X  QXmlSimpleReader
QDir QLibrary QProgressDialog QTableView
QDomDocument QLibraryInfo QPushButton QTableWidget
QDomNode QLineEdit Q  QQueue QTabWidget
QDoubleSpinBox QLinkedList R  QRadioButton QTemporaryFile

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Qt 4.2.3