- QRect
- QRegExp
- QRegExpValidator
- QRegion
- QResizeEvent
- qscale_matrix
- qscale_matrix_f
- QScreen
- QScrollBar
- QScrollView
- QSemaphore
- QServerSocket
- QSessionManager
- QSettings
- QSGIStyle
- QShowEvent
- QSignal
- QSignalMapper
- QSimpleRichText
- QSize
- QSizeGrip
- QSizePolicy
- QSjisCodec
- QSlider
- QSocket
- QSocketDevice
- QSocketNotifier
- qsort
- qsort_r
- QSound
- QSpacerItem
- QSpinBox
- QSplashScreen
- QSplitter
- QSql
- QSqlCursor
- QSqlDatabase
- QSqlDriver
- QSqlDriverPlugin
- QSqlEditorFactory
- QSqlError
- QSqlField
- QSqlFieldInfo
- QSqlForm
- QSqlIndex
- QSqlPropertyMap
- QSqlQuery
- QSqlRecord
- QSqlRecordInfo
- QSqlResult
- QSqlSelectCursor
- QStatusBar
- Qstl
- QStoredDrag
- QStrIList
- QString
- QStringList
- QStrList
- QStrListIterator
- QStyle
- QStyleFactory
- QStyleOption
- QStylePlugin
- QStyleSheet
- QStyleSheetItem
- QSyntaxHighlighter
- Qt
- QTab
- QTabBar
- QTabDialog
MAN (3)
Library functions, covering in particular the C standard library