Counted up the types used in all public Qt functions (return and params):

  void 3282
  int 3217
  bool 2294
  const QString& 1223
  qreal 757
  QString 601
  QWidget* 453
  const char* 288
  QObject* 230
  const QModelIndex& 165
  const QPoint& 152
  const QByteArray& 128
  qint64 108
  QAction* 102
  const QRect& 97
  const QRectF& 97
  const QPointF& 96
  QByteArray 87
  QStringList 85
  const QBrush& 84
  QString& 83
  int* 80
  const QColor& 79
  QRect 78
  uint 75
  const _iterator 72
  QIODevice* 71
  const QPixmap& 70
  const QVariant& 70
  QChar 65
  QVariant 64
  QRectF 60
  QPointF 59
  QSize 59
  const QIcon& 58
  char 57
  const QSize& 57
  Qt::Alignment 56
  const QStringList& 55
  Qt::Orientation 53
  double 52
  QScriptValue 50
  QByteArray& 49
  T& 48
  QGraphicsItem* 46
  Qt::CaseSensitivity 45
  QModelIndex 44
  const QPainterPath& 44
  const QUrl& 44
  QPoint 42
  bool* 42
  const QFont& 41
  qreal* 41
  const QScriptValue& 40
  QDataStream& 39
  QImage 38
  QTreeWidgetItem* 37
  const const_iterator& 37
  QMenu* 36
  QStringRef 36
  const QRegion& 36
  QPixmap 34
  QTextStream& 34
  const QLatin1String& 34
  QIcon 32
  Type 32
  const QKeySequence& 31
  const QImage& 30
  const QRegExp& 30
  const iterator& 30
  QDateTime 29
  QPainter* 29
  QPolygonF 29
  Qt::KeyboardModifiers 29
  QColor 28
  QPainterPath 28
  const QDateTime& 28
  const _iterator& 27
  iterator& 27
  QLayout* 26
  const QGraphicsItem* 26
  const QMatrix& 26
  const QPolygon& 26
  GLuint 25
  Mode 24
  QUrl 24
  Qt::WindowFlags 24
  const QPolygonF& 24
  QAbstractButton* 23
  QRegion 23
  const QDate& 23
  const QObject* 23
  quint16 23
  QBrush 22
  QDomNode 22
  QFont 22
  QStandardItem* 22
  int& 22
  QGraphicsLayoutItem* 21
  const QTextCursor& 21
  const QTransform& 21
  QAbstractItemModel* 20
  const QStyleOptionViewItem& 20
  uchar 20
  QTextDocument* 19
  const QTime& 19
  GLenum 18
  QList<QGraphicsItem*> 18
  QPaintDevice* 18
  QString* 18
  QTableWidgetItem* 18
  const QChar* 18
  const QPen& 18
  const QWidget* 18
  const T* 18
  QScriptEngine* 17
  QSizeF 17
  const QSet<T>& 17
  const QXmlNodeModelIndex& 17
  void* 17
  Item 16
  Policy 16
  QListWidgetItem* 16
  char* 16
  const QPalette& 16
  OpenMode 15
  QPolygon 15
  QSet<T>& 15
  QTextCursor 15
  Qt::DropAction 15
  Qt::ItemSelectionMode 15
  Qt::MouseButtons 15
  Qt::SortOrder 15
  const QDBusArgument& 15
  const QDomNode& 15
  const QSizeF& 15
  const QXmlName& 15
  QDBusArgument& 14
  QPrinter* 14
  QRgb 14
  Qt::ItemFlags 14
  const QHostAddress& 14
  const QTextCharFormat& 14
  qlonglong 14
  FormatType 13
  QAbstractItemDelegate* 13
  QDate 13
  QDir::Filters 13
  QDomNode::NodeType 13
  QTransform 13
  Qt::AspectRatioMode 13
  Qt::DropActions 13
  Qt::HANDLE 13
  Qt::ImageConversionFlags 13
  float 13
  qulonglong 13
  ushort 13
  Format 12
  QFlags 12
  QList<QByteArray> 12
  QTextBlock 12
  const QDBusMessage& 12
  const QLineF& 12
  const QTextBlock& 12
  const uchar* 12
  quint32 12
  QSqlRecord 11
  QTextCharFormat 11
  QToolBar* 11
  QTransform& 11
  Qt::FillRule 11
  Qt::LayoutDirection 11
  Qt::MouseButton 11
  const QDir& 11
  const QNetworkRequest& 11
  const QScriptString& 11
  const QTreeWidgetItem* 11
  unsignedlong 11
  ColorGroup 10
  Extension 10
  QDBusMessage 10
  QDockWidget* 10
  QDomElement 10
  QMatrix 10
  QTextCodec* 10
  Qt::CheckState 10
  Qt::GlobalColor 10
  Qt::TextFormat 10
  Qt::TransformationMode 10
  const QColorGroup& 10
  const QGLFormat& 10
  const QList<QStandardItem*>& 10
  const QLocale& 10
  const QMimeData* 10
  const QSqlField& 10
  const QStringRef& 10
  const QStyleOption* 10
  uchar* 10
  ColorRole 9
  Direction 9
  QIODevice::OpenMode 9
  QLayoutItem* 9
  QList<QAction*> 9
  QPushButton* 9
  QStyle* 9
  QTime 9
  Qt::BrushStyle 9
  const QFontMetrics& 9
  const QLinkedList<T>& 9
  const QString 9
  const QVector<T>& 9
  const QXmlNamePool& 9
  short 9
  Filters 8
  QByteArray* 8
  QDir 8
  QDomAttr 8
  QLineF 8
  QList<int> 8
  QRegion& 8
  QSizePolicy::Policy 8
  QStringList& 8
  QTextFrame* 8
  QVector<T>& 8
  Qt::ButtonState 8
  Qt::Corner 8
  Qt::PenStyle 8
  Qt::TextElideMode 8
  Qt::TextInteractionFlags 8
  StandardButton 8
  State 8
  const QBitArray& 8
  const QFileInfo& 8
  const QHash<KeyT>& 8
  const QMap<KeyT>& 8
  const QNetworkProxy& 8
  const QPicture& 8
  const QPoint* 8
  const QTextFormat& 8
  Enum 7
  QBitmap 7
  QFlags& 7
  QIcon::Mode 7
  QKeySequence 7
  QLinkedList<T>& 7
  QList<Key> 7
  QList<T>& 7
  QMimeData* 7
  QModelIndexList 7
  QPalette::ColorRole 7
  Qt::DockWidgetArea 7
  Qt::TimeSpec 7
  Reason 7
  ViewMode 7
  const QDBusPendingCall& 7
  const QLine& 7
  const QList<QVariant>& 7
  const QPointF* 7
  const QRegion 7
  const QSqlQuery& 7
  const QSqlRecord& 7
  const QSslCertificate& 7
  const QSslConfiguration& 7
  const QTableWidgetItem* 7
  quint64 7
  ButtonRole 6
  CacheMode 6
  ColorMode 6
  Error 6
  FILE* 6
  QDesignerFormEditorInterface* 6
  QFileIconProvider* 6
  QGraphicsWidget* 6
  QHeaderView* 6
  QHostAddress 6
  QItemSelectionModel::SelectionFlags 6
  QLine 6
  QMatrix& 6
  QNetworkReply* 6
  QPalette 6
  QRegExp& 6
  QSsl::SslProtocol 6
  QTextList* 6
  QUndoStack* 6
  QVariant::Type 6
  Qt::ClipOperation 6
  Qt::FocusReason 6
  Qt::MatchFlags 6
  Qt::ScrollBarPolicy 6
  Qt::ShortcutContext 6
  ResizeMode 6
  Shape 6
  StandardButtons 6
  Status 6
  Unit 6
  WId 6
  const QFontMetricsF& 6
  const QFuture<T>& 6
  const QItemSelectionRange& 6
  const QListWidgetItem* 6
  const QNetworkCacheMetaData& 6
  const QRect 6
  const QSslKey& 6
  const QTextOption& 6
  const QXmlQuery& 6
  const QXmlStreamAttribute& 6
  const T 6
  Icon 5
  IteratorFlags 5
  QBitArray& 5
  QColorGroup 5
  QDomNodeList 5
  QEvent* 5
  QGenericArgument 5
  QIcon::State 5
  QInputContext* 5
  QList<QStandardItem*> 5
  QLocale 5
  QNetworkAccessManager* 5
  QPainterPath& 5
  QPen 5
  QPoint& 5
  QReadWriteLock* 5
  QScriptValue::PropertyFlags 5
  QSet<T> 5
  QSize& 5
  QSsl::EncodingFormat 5
  QSslCertificate 5
  QTreeWidget* 5
  QTreeWidgetItemIterator& 5
  QWebFrame* 5
  Qt::SizeMode 5
  Section 5
  Size 5
  char** 5
  const QBitmap& 5
  const QCursor& 5
  const QDomAttr& 5
  const QNetworkProxyQuery& 5
  const QPersistentModelIndex& 5
  const QString* 5
  const QStyleOptionFrame& 5
  const QStyleOptionTab& 5
  const QTextFragment& 5
  const QXmlItem& 5
  const QXmlStreamNamespaceDeclaration& 5
  const ResolveFlags& 5
  qsreal 5
  uint* 5
  Endian 4
  EventFilter 4
  FileMode 4
  HDC 4
  InsertPolicy 4
  ItemRole 4
  LineWrapMode 4
  MoveMode 4
  PageBreakFlags 4
  PageSetupDialogOption 4
  PageSetupDialogOptions 4
  PrintDialogOption 4
  PrintDialogOptions 4
  PrintRange 4
  ProcessChannelMode 4
  QAbstractExtensionFactory* 4
  QAbstractItemView* 4
  QCompleter* 4
  QDBusError 4
  QDBusReply& 4
  QDesignerFormWindowInterface* 4
  QDomNamedNodeMap 4
  QFileInfo 4
  QGLFormat 4
  QGraphicsItemGroup* 4
  QGraphicsScene* 4
  QHash<KeyT>& 4
  QHash<KeyT>::const _iterator 4
  QHash<KeyT>::iterator 4
  QHelpContentItem* 4
  QItemEditorFactory* 4
  QList<QPair<qrealQPointF>> 4
  QList<QPolygonF> 4
  QList<QSslCertificate> 4
  QListWidget* 4
  QMap<KeyT>& 4
  QMap<KeyT>::const _iterator 4
  QMap<KeyT>::iterator 4
  QMenuItem* 4
  QPaintEngine* 4
  QPointF& 4
  QRect* 4
  QScriptContext* 4
  QScrollBar* 4
  QSizeF& 4
  QSpacerItem* 4
  QSqlError 4
  QSsl::KeyAlgorithm 4
  QSslSocket::PeerVerifyMode 4
  QTabWidget::TabPosition 4
  QTabWidget::TabShape 4
  QTextOption::WrapMode 4
  QValidator::State 4
  QWebHistoryItem 4
  QWizardPage* 4
  QXmlNodeModelIndex 4
  Qt::DayOfWeek 4
  Qt::FocusPolicy 4
  Qt::Orientations 4
  Qt::PenCapStyle 4
  Qt::PenJoinStyle 4
  Qt::ToolBarArea 4
  Qt::ToolButtonStyle 4
  Qt::WidgetAttribute 4
  Scope 4
  ScrollMode 4
  SizeConstraint 4
  Style 4
  TickPosition 4
  ViewportAnchor 4
  WindowOrder 4
  WizardButton 4
  const GUID& 4
  const Key 4
  const QAbstractItemModel* 4
  const QAuthenticator& 4
  const QChar 4
  const QChar& 4
  const QDBusError& 4
  const QDomDocumentType& 4
  const QDomImplementation& 4
  const QDomNamedNodeMap& 4
  const QDomNodeList& 4
  const QExplicitlySharedDataPointer<T>& 4
  const QFuture& 4
  const QGLColormap& 4
  const QHttpRequestHeader& 4
  const QList<QTreeWidgetItem*>& 4
  const QMetaObject* 4
  const QModelIndexList& 4
  const QNetworkAddressEntry& 4
  const QNetworkCookie& 4
  const QScriptContextInfo& 4
  const QSharedDataPointer<T>& 4
  const QSharedPointer<T>& 4
  const QSourceLocation& 4
  const QSslCipher& 4
  const QSslError& 4
  const QStyleOption& 4
  const QTextBlockFormat& 4
  const QTextCodec* 4
  const QTextDocumentFragment& 4
  const QTextLength& 4
  const QTextTableCell& 4
  const QUrlInfo& 4
  const QUuid& 4
  const QValidator* 4
  const QWeakPointer<T>& 4
  const QX11Info& 4
  const QXmlStreamEntityDeclaration& 4
  const QXmlStreamNotationDeclaration& 4
  const ushort* 4
  const void* 4
  double& 4
  long 4
  qptrdiff 4
  qreal& 4
  ulong 4
  Attachment 3
  BoundaryType 3
  Capabilities 3
  ComplexControl 3
  ControlType 3
  Display* 3
  ErrorType 3
  FindFlags 3
  FontFamily 3
  FontSize 3
  ImageOption 3
  ItemRole* 3
  OSMenuRef 3
  ParsingMode 3
  ProcessChannel 3
  ProcessEventsFlags 3
  QAccessibleInterface* 3
  QActionGroup* 3
  QDBus::CallMode 3
  QDBusPendingCall 3
  QDBusPendingReply& 3
  QDir::SortFlags 3
  QDomDocument 3
  QDomDocumentType 3
  QDomText 3
  QExtensionManager* 3
  QFile::Permissions 3
  QFileInfoList 3
  QFont::StyleHint 3
  QFont::StyleStrategy 3
  QGL::FormatOptions 3
  QGraphicsProxyWidget* 3
  QIconEngineV2* 3
  QList<QAbstractButton*> 3
  QList<QTreeWidgetItem*> 3
  QList<QUrl> 3
  QList<QWebHistoryItem> 3
  QMdiSubWindow* 3
  QMetaMethod 3
  QMutex* 3
  QNetworkProxy 3
  QPainter::RenderHints 3
  QRect& 3
  QRegExp 3
  QRgb* 3
  QScriptClass* 3
  QScriptString 3
  QScriptValue& 3
  QSharedPointer<X> 3
  QSizePolicy 3
  QSizePolicy::ControlType 3
  QSizePolicy::ControlTypes 3
  QSql::ParamType 3
  QSqlDriver* 3
  QSqlIndex 3
  QSslConfiguration 3
  QSslKey 3
  QSvgRenderer* 3
  QTextBlockFormat 3
  QTextCursor::MoveMode 3
  QTextFormat 3
  QTextLength 3
  QTextLine 3
  QTextTable* 3
  QTextTableCell 3
  QUndoCommand* 3
  QVector<T> 3
  QWeakPointer<T> 3
  QWebPage* 3
  QXmlNamePool& 3
  Qt::ArrowType 3
  Qt::BGMode 3
  Qt::BackgroundMode 3
  Qt::ConnectionType 3
  Qt::CursorShape 3
  Qt::DateFormat 3
  Qt::DockWidgetAreas 3
  Qt::InputMethodQuery 3
  Qt::Key 3
  Qt::WindowModality 3
  Qt::WindowStates 3
  QueryType 3
  SocketState 3
  SortFlags 3
  Spec 3
  SpecialAddress 3
  SplitBehavior 3
  StyleHint 3
  StyleStrategy 3
  Text 3
  WebAttribute 3
  XEvent* 3
  bool& 3
  const ExtensionOption* 3
  const PropertyFlags& 3
  const QFontInfo& 3
  const QGLContext* 3
  const QGLWidget* 3
  const QGradient& 3
  const QItemSelection& 3
  const QList<QSslCertificate>& 3
  const QListWidgetItem& 3
  const QPixmap* 3
  const QPrinterInfo& 3
  const QRect* 3
  const QRgb* 3
  const QSizePolicy& 3
  const QSqlDatabase& 3
  const QSqlField* 3
  const QStandardItem* 3
  const QStyleOptionComplex* 3
  const QStyleOptionProgressBar& 3
  const QStyleOptionTabBarBase& 3
  const QStyleOptionToolBox& 3
  const QTableWidgetItem& 3
  const QTextDocument* 3
  const QTextListFormat& 3
  const QTreeWidgetItem& 3
  const QUndoCommand* 3
  const QWebHistoryItem& 3
  const QXmlInputSource* 3
  const QXmlParseException& 3
  qlonglong& 3
  qulonglong& 3
  uint& 3
  AcceptMode 2
  AccessMode 2
  AreaOption 2
  Attribute 2
  AutoFormatting 2
  BackgroundOrigin 2
  BindMode 2
  BorderStyle 2
  ButtonPosition 2
  ButtonSymbols 2
  ByteOrder 2
  Capitalization 2
  ColorDialogOption 2
  ColorDialogOptions 2
  CompletionMode 2
  CompositionMode 2
  ConnectionMode 2
  ConverterState* 2
  CoordinateMode 2
  CorrectionMode 2
  Country 2
  CursorAction 2
  CursorMode 2
  CurveShape 2
  DialogLabel 2
  DockOptions 2
  DockWidgetFeatures 2
  DragDropMode 2
  DragMode 2
  DuplexMode 2
  EchoMode 2
  Edge 2
  EditStrategy 2
  EditTriggers 2
  Feature 2
  FieldAlignment 2
  FieldGrowthPolicy 2
  FileFlags 2
  FileName 2
  FileOwner 2
  FileOwnerconst  2
  FileTime 2
  Flags 2
  Flow 2
  FontDialogOption 2
  FontDialogOptions 2
  FontFilters 2
  FormattingOptions 2
  FunctionSignature 2
  GraphicsItemFlags 2
  HorizontalHeaderFormat 2
  HostInfoError 2
  InputDialogOption 2
  InputDialogOptions 2
  InputMode 2
  ItemIndexMethod 2
  KnownHeaders 2
  Language 2
  LayoutMode 2
  LinkDelegationPolicy 2
  LoadHints 2
  LocalSocketState 2
  MenuRole 2
  MetaInformation 2
  ModelSorting 2
  MoveOperation 2
  Movement 2
  NormalizationForm 2
  Notation 2
  NumberFlags 2
  NumberOptions 2
  Offset 2
  OptimizationFlags 2
  Option 2
  Options 2
  Orientation 2
  OutputFormat 2
  PageOrder 2
  PageSize 2
  PaintEngineFeatures 2
  PaperSize 2
  PaperSource 2
  PatternSyntax 2
  Permissions 2
  PolygonDrawMode 2
  Position 2
  PrintEnginePropertyKey 2
  PrinterMode 2
  PrinterOption 2
  Priority 2
  QAbstractItemView::SelectionBehavior 2
  QAbstractItemView::SelectionMode 2
  QAbstractMessageHandler* 2
  QAbstractNetworkCache* 2
  QAbstractProxyModel* 2
  QAbstractSocket::SocketError 2
  QAbstractTextDocumentLayout* 2
  QApplication* 2
  QAtomicInt& 2
  QAtomicPointer<T>& 2
  QBitArray 2
  QBitRef 2
  QBitmap& 2
  QByteRef 2
  QCalendarWidget* 2
  QChar& 2
  QChar* 2
  QCharRef 2
  QColor& 2
  QCursor 2
  QDBusConnection 2
  QDBusError::ErrorType 2
  QDBusMessage& 2
  QDateTime& 2
  QDesignerActionEditorInterface* 2
  QDesignerObjectInspectorInterface* 2
  QDesignerPropertyEditorInterface* 2
  QDesignerWidgetBoxInterface* 2
  QDir& 2
  QDomCDATASection 2
  QDomComment 2
  QDomDocumentFragment 2
  QDomEntityReference 2
  QDomProcessingInstruction 2
  QFont::Capitalization 2
  QFontDatabase::WritingSystem 2
  QFontInfo 2
  QFontMetrics 2
  QFontMetricsF& 2
  QGLContext* 2
  QGenericReturnArgument 2
  QGraphicsEllipseItem* 2
  QGraphicsLayout* 2
  QGraphicsLineItem* 2
  QGraphicsRectItem* 2
  QHostAddress& 2
  QIconEngine* 2
  QImage* 2
  QImage::Format 2
  QImageIOHandler::ImageOption 2
  QItemSelection 2
  QItemSelectionModel* 2
  QItemSelectionRange 2
  QKeySequence::StandardKey 2
  QLibrary::LoadHints 2
  QLineEdit* 2
  QLineEdit::EchoMode 2
  QList<QDesignerCustomWidgetInterface*> 2
  QList<QHelpSearchQuery> 2
  QList<QListWidgetItem*> 2
  QList<QPair<QStringQString>> 2
  QList<QSize> 2
  QList<QSslCipher> 2
  QList<QTableWidgetItem*> 2
  QList<QVariant> 2
  QList<Tab> 2
  QList<WritingSystem> 2
  QList<qreal> 2
  QMap<QStringQUrl> 2
  QMap<QStringQVariant> 2
  QMap<intQVariant> 2
  QMenuBar* 2
  QMetaEnum 2
  QMetaProperty 2
  QMimeSource* 2
  QNetworkAccessManager::Operation 2
  QNetworkCacheMetaData 2
  QNetworkCookieJar* 2
  QNetworkProxy::ProxyType 2
  QNetworkProxyFactory* 2
  QPalette& 2
  QPersistentModelIndex& 2
  QPixmap& 2
  QPointer<T>& 2
  QProgressBar::Direction 2
  QRectF& 2
  QRunnable* 2
  QScriptEngineAgent* 2
  QSessionManager& 2
  QSharedPointer<T>& 2
  QSocketNotifier* 2
  QSplitter* 2
  QSql::NumericalPrecisionPolicy 2
  QSql::TableType 2
  QSqlDatabase 2
  QSqlField 2
  QSqlQuery 2
  QSqlResult* 2
  QSslCipher 2
  QStatusBar* 2
  QStringRef& 2
  QTcpSocket* 2
  QTextBlockUserData* 2
  QTextCursor* 2
  QTextCursor::MoveOperation 2
  QTextDocument::FindFlags 2
  QTextFrame::iterator 2
  QTextFrameFormat 2
  QTextListFormat 2
  QTextListFormat::Style 2
  QTextObject* 2
  QTextOption 2
  QTextTableFormat 2
  QThread* 2
  QTimeLine* 2
  QTreeWidgetItem::ChildIndicatorPolicy 2
  QUndoGroup* 2
  QUrl& 2
  QVector<QTextLength> 2
  QVector<QXmlName> 2
  QVector<QXmlNodeModelIndex> 2
  QVector<qreal> 2
  QWSEvent* 2
  QWebHistory* 2
  QWebPage::WebAction 2
  QWebPluginFactory* 2
  QWebSecurityOrigin 2
  QWebSettings* 2
  QWidgetList 2
  QWindowSurface* 2
  QWizard::WizardButton 2
  QWizard::WizardPixmap 2
  QXmlContentHandler* 2
  QXmlDTDHandler* 2
  QXmlDeclHandler* 2
  QXmlEntityResolver* 2
  QXmlErrorHandler* 2
  QXmlInputSource* 2
  QXmlItem 2
  QXmlLexicalHandler* 2
  QXmlName 2
  QXmlStreamEntityResolver* 2
  Qt::Axis 2
  Qt::ContextMenuPolicy 2
  Qt::MaskMode 2
  Qt::ToolBarAreas 2
  Qt::WindowType 2
  QueryFlags 2
  QueryLanguage 2
  RealNumberNotation 2
  RecursionMode 2
  RegionType 2
  RenderHint 2
  RenderHints 2
  RequiredStatus 2
  RestartHint 2
  Role 2
  RowWrapPolicy 2
  ScrollHint 2
  SegmentStyle 2
  SelectionBehavior 2
  SelectionMode 2
  Separator 2
  Shadow 2
  ShapeMode 2
  SizeAdjustPolicy 2
  SocketType 2
  SpacingType 2
  SpecialValue 2
  Spread 2
  SslError 2
  StackingMode 2
  StandardPixmap 2
  SubControl 2
  SubWindowOption 2
  SubjectInfo 2
  SubmitPolicy 2
  System 2
  TabPosition 2
  TabShape 2
  ToggleState 2
  TokenType 2
  ToolButtonPopupMode 2
  TransferType 2
  UnderlineStyle 2
  ValueOwnership 2
  VerticalAlignment 2
  VerticalHeaderFormat 2
  ViewportUpdateMode 2
  WebAction 2
  WizardOption 2
  WizardOptions 2
  WizardPixmap 2
  WizardStyle 2
  WrapMode 2
  char*& 2
  const Element& 2
  const QAbstractUriResolver* 2
  const QAccessibleInterface* 2
  const QAtomicInt& 2
  const QAtomicPointer<T>& 2
  const QBitmap* 2
  const QByteArrayMatcher& 2
  const QColormap& 2
  const QDBusConnection& 2
  const QDBusPendingReply& 2
  const QDomCDATASection& 2
  const QDomCharacterData& 2
  const QDomComment& 2
  const QDomDocument& 2
  const QDomDocumentFragment& 2
  const QDomElement& 2
  const QDomEntity& 2
  const QDomEntityReference& 2
  const QDomNotation& 2
  const QDomProcessingInstruction& 2
  const QDomText& 2
  const QFile& 2
  const QFlags& 2
  const QHostInfo& 2
  const QHttpHeader& 2
  const QHttpResponseHeader& 2
  const QInputMethodEvent& 2
  const QLine* 2
  const QLineF* 2
  const QList<Attribute>& 2
  const QList<QPair<QStringQString>>& 2
  const QList<QSslCipher>& 2
  const QList<QUrl>& 2
  const QList<int>& 2
  const QMultiHash& 2
  const QMultiMap& 2
  const QNetworkInterface& 2
  const QObjectList& 2
  const QPointer<T>& 2
  const QRectF* 2
  const QScriptSyntaxCheckResult& 2
  const QSqlError& 2
  const QSqlIndex& 2
  const QStringMatcher& 2
  const QStyleOptionComplex& 2
  const QStyleOptionGraphicsItem* 2
  const QStyleOptionTabV2& 2
  const QTableWidgetSelectionRange& 2
  const QTextBoundaryFinder& 2
  const QTextFrameFormat& 2
  const QTextImageFormat& 2
  const QTextTableFormat& 2
  const QTreeWidgetItemIterator 2
  const QTreeWidgetItemIterator& 2
  const QVarLengthArray<TPrealloc>& 2
  const QVector<QPoint>& 2
  const QVector<QPointF>& 2
  const QVector<QTextLength>& 2
  const QVector<qreal>& 2
  const QWebDatabase& 2
  const QWebHitTestResult& 2
  const QWebSecurityOrigin& 2
  const Q_IPV6ADDR& 2
  const Tab& 2
  const _reference 2
  const char*const[] 2
  const sockaddr* 2
  float& 2
  long* 2
  qint32 2
  quint8* 2
  quintptr 2
  std::list<T> 2
  ushort& 2
  Access 1
  Action 1
  ActionEvent 1
  Algorithm 1
  AttributeType 1
  AttributesMap 1
  BatchExecutionMode 1
  BoundaryReasons 1
  CGImageRef 1
  Category 1
  Command 1
  ConstIterator 1
  ContentsType 1
  ControlElement 1
  ConversionFlags 1
  CursorPosition 1
  DebuggerAction 1
  DebuggerWidget 1
  Decomposition 1
  Deleter 1
  DriverFeature 1
  ElementType 1
  Encoding 1
  EncodingPolicy 1
  EventHandlerCallRefEventRef 1
  Exception* 1
  ExecutionState 1
  FT_Face 1
  FieldName 1
  FileError 1
  FunctionType 1
  GraphicsItemFlag 1
  HBITMAP 1
  HBitmapFormat 1
  HCURSOR 1
  HCURSOR_or_HANDLE 1
  HFONT 1
  HMENU 1
  Handle 1
  IconType 1
  IdentifierType 1
  ImageReaderError 1
  ImageWriterError 1
  InterfaceFlags 1
  IntersectType 1
  InvertMode 1
  Iterator 1
  Iterator* 1
  Joining 1
  KeyboardAction 1
  LocalSocketError 1
  MSG* 1
  MeasurementSystem 1
  MemoryMapFlags 1
  MessageIcon 1
  MessageType 1
  Method 1
  MethodType 1
  MovieState 1
  NetworkError 1
  NodeType 1
  OptimizationFlag 1
  PermissionSpec 1
  PixelMetric 1
  PointerType 1
  PrimitiveElement 1
  PrinterState 1
  ProxyType 1
  QAbstractFileEngine* 1
  QAbstractSocket::NetworkLayerProtocol 1
  QAbstractXmlReceiver* 1
  QAccessibleBridge* 1
  QAccessibleInterface** 1
  QAuthenticator& 1
  QBrush& 1
  QButtonGroup* 1
  QByteArrayMatcher& 1
  QChar::UnicodeVersion 1
  QColormap& 1
  QContextMenuEvent* 1
  QCryptographicHash::Algorithm 1
  QCursor& 1
  QDBusConnection& 1
  QDBusConnectionInterface* 1
  QDBusObjectPath& 1
  QDBusPendingCall& 1
  QDBusSignature& 1
  QDBusVariant& 1
  QDate& 1
  QDesignerFormWindowCursorInterface* 1
  QDesignerFormWindowManagerInterface* 1
  QDomAttr& 1
  QDomCDATASection& 1
  QDomCharacterData 1
  QDomCharacterData& 1
  QDomComment& 1
  QDomDocument& 1
  QDomDocumentFragment& 1
  QDomDocumentType& 1
  QDomElement& 1
  QDomEntity 1
  QDomEntity& 1
  QDomEntityReference& 1
  QDomImplementation 1
  QDomImplementation& 1
  QDomNamedNodeMap& 1
  QDomNode& 1
  QDomNodeList& 1
  QDomNotation 1
  QDomNotation& 1
  QDomProcessingInstruction& 1
  QDomText& 1
  QEventLoop::ProcessEventsFlags 1
  QExplicitlySharedDataPointer& 1
  QExplicitlySharedDataPointer<T>& 1
  QFile& 1
  QFile::FileError 1
  QFile::MemoryMapFlags 1
  QFileInfo& 1
  QFlag 1
  QFont& 1
  QFont::Style 1
  QFontInfo& 1
  QFontMetrics& 1
  QFuture& 1
  QFuture<T> 1
  QFutureIterator& 1
  QGLColormap& 1
  QGLFormat& 1
  QGradientStops 1
  QGraphicsPathItem* 1
  QGraphicsPixmapItem* 1
  QGraphicsPolygonItem* 1
  QGraphicsSimpleTextItem* 1
  QGraphicsTextItem* 1
  QHash<QStringQVariant> 1
  QHashIterator& 1
  QHeaderView::ResizeMode 1
  QHelpContentModel* 1
  QHelpContentWidget* 1
  QHelpEngineCore* 1
  QHelpIndexModel* 1
  QHelpIndexWidget* 1
  QHelpSearchEngine* 1
  QHelpSearchQueryWidget* 1
  QHelpSearchResultWidget* 1
  QHostAddress* 1
  QHostInfo& 1
  QHttpHeader& 1
  QHttpRequestHeader 1
  QHttpRequestHeader& 1
  QHttpResponseHeader 1
  QHttpResponseHeader& 1
  QIcon& 1
  QIcon* 1
  QImage& 1
  QImageIOHandler* 1
  QItemEditorCreatorBase* 1
  QKeySequence& 1
  QLabel* 1
  QLatin1Char 1
  QLatin1String 1
  QLatin1String& 1
  QLayoutIterator 1
  QLinkedList<T> 1
  QLinkedListIterator& 1
  QList<ExtraSelection> 1
  QList<FormatRange> 1
  QList<PaperSource> 1
  QList<Plugin> 1
  QList<QDockWidget*> 1
  QList<QFuture<T>> 1
  QList<QGraphicsView*> 1
  QList<QGraphicsWidget*> 1
  QList<QHostAddress> 1
  QList<QImageTextKeyLang> 1
  QList<QKeySequence> 1
  QList<QMdiSubWindow*> 1
  QList<QNetworkAddressEntry> 1
  QList<QNetworkCookie> 1
  QList<QNetworkProxy> 1
  QList<QPair<QByteArrayQByteArray>> 1
  QList<QPair<qrealqreal>> 1
  QList<QPrinter::PaperSize> 1
  QList<QSslError> 1
  QList<QStringList> 1
  QList<QTableWidgetSelectionRange> 1
  QList<QTextEdit::ExtraSelection> 1
  QList<QTextFrame*> 1
  QList<QTextOption::Tab> 1
  QList<QUndoStack*> 1
  QList<QVariant>& 1
  QList<QWebDatabase> 1
  QList<QWebFrame*> 1
  QList<QWidget*> 1
  QList<SearchHit> 1
  QList<TimerInfo> 1
  QListIterator& 1
  QListWidgetItem& 1
  QLocalSocket* 1
  QLocale& 1
  QMainWindow* 1
  QMap<QDateQTextCharFormat> 1
  QMap<QStringQVariant>& 1
  QMapIterator& 1
  QMdiArea* 1
  QMetaClassInfo 1
  QMouseEvent* 1
  QMovie* 1
  QMultiHash 1
  QMultiHash& 1
  QMultiMap 1
  QMultiMap& 1
  QMultiMap<QSsl::AlternateNameEntryTypeQString> 1
  QMultiMap<QStringQString> 1
  QMutableHashIterator& 1
  QMutableLinkedListIterator& 1
  QMutableListIterator& 1
  QMutableMapIterator& 1
  QMutableSetIterator& 1
  QMutableVectorIterator& 1
  QNetworkAddressEntry& 1
  QNetworkCacheMetaData& 1
  QNetworkCookie& 1
  QNetworkInterface& 1
  QNetworkProxy& 1
  QNetworkProxyQuery& 1
  QNetworkRequest 1
  QNetworkRequest& 1
  QNetworkRequest::Attribute 1
  QNetworkRequest::KnownHeaders 1
  QPaintDevice::PaintDeviceMetric 1
  QPaintEngine::DirtyFlags 1
  QPainter::CompositionMode 1
  QPainter::RenderHint 1
  QPair<T1T2>& 1
  QPen& 1
  QPicture& 1
  QPicture* 1
  QPixmap* 1
  QPointF* 1
  QPrintEngine* 1
  QPrinter::Orientation 1
  QPrinter::PrinterState 1
  QPrinterInfo& 1
  QProcess* 1
  QProcess::ExitStatus 1
  QProcess::ProcessError 1
  QProcess::ProcessState 1
  QProgressBar* 1
  QRectF* 1
  QScriptClassPropertyIterator* 1
  QScriptContextInfo& 1
  QScriptEngine::ValueOwnership 1
  QScriptString& 1
  QScriptSyntaxCheckResult& 1
  QScriptValueIterator& 1
  QSet<Method> 1
  QSetIterator& 1
  QSharedDataPointer& 1
  QSharedDataPointer<T>& 1
  QSharedPointer<T> 1
  QSourceLocation& 1
  QSplitterHandle* 1
  QSqlDatabase& 1
  QSqlError& 1
  QSqlField& 1
  QSqlIndex& 1
  QSqlQuery& 1
  QSqlRecord& 1
  QSqlRelation 1
  QSqlTableModel* 1
  QSsl::KeyType 1
  QSslCertificate& 1
  QSslCipher& 1
  QSslConfiguration& 1
  QSslError& 1
  QSslKey& 1
  QStandardItemModel* 1
  QStringList* 1
  QStringMatcher& 1
  QStyle::ComplexControl 1
  QStyle::ControlElement 1
  QStyle::PrimitiveElement 1
  QStyleOption& 1
  QStyleOption* 1
  QStyleOptionFrameV2& 1
  QStyleOptionFrameV3& 1
  QStyleOptionProgressBarV2& 1
  QStyleOptionTabBarBaseV2& 1
  QStyleOptionTabV2& 1
  QStyleOptionTabV3& 1
  QStyleOptionToolBoxV2& 1
  QStyleOptionViewItemV2& 1
  QStyleOptionViewItemV3& 1
  QStyleOptionViewItemV4& 1
  QTableWidget* 1
  QTableWidgetItem& 1
  QTextBlock& 1
  QTextBoundaryFinder& 1
  QTextCursor& 1
  QTextDecoder* 1
  QTextDocumentFragment 1
  QTextDocumentFragment& 1
  QTextEdit* 1
  QTextEncoder* 1
  QTextEngine* 1
  QTextFormat& 1
  QTextFragment 1
  QTextFragment& 1
  QTextFrameFormat::Position 1
  QTextImageFormat 1
  QTextLayout* 1
  QTextObjectInterface* 1
  QTextOption& 1
  QTextTableCell& 1
  QTextTableCellFormat 1
  QTime& 1
  QTreeWidgetItem& 1
  QUrlInfo& 1
  QUuid& 1
  QUuid::Variant 1
  QUuid::Version 1
  QVarLengthArray<TPrealloc>& 1
  QVariant& 1
  QVector<QRect> 1
  QVector<QRgb> 1
  QVector<QTextFormat> 1
  QVector<uint> 1
  QVectorIterator& 1
  QWebDatabase& 1
  QWebHistoryItem& 1
  QWebHitTestResult 1
  QWebHitTestResult& 1
  QWebPage::FindFlags 1
  QWebSecurityOrigin& 1
  QWidget*bool 1
  QX11Info& 1
  QXmlInputSource*& 1
  QXmlItem& 1
  QXmlLocator* 1
  QXmlName& 1
  QXmlNamePool 1
  QXmlNodeModelIndex::DocumentOrder 1
  QXmlNodeModelIndex::NodeKind 1
  QXmlQuery& 1
  QXmlReader* 1
  QXmlResultItems* 1
  QXmlStreamAttribute& 1
  QXmlStreamAttributes 1
  QXmlStreamEntityDeclaration& 1
  QXmlStreamEntityDeclarations 1
  QXmlStreamNamespaceDeclaration& 1
  QXmlStreamNamespaceDeclarations 1
  QXmlStreamNotationDeclaration& 1
  QXmlStreamNotationDeclarations 1
  QXmlStreamReader* 1
  Q_INVOKABLE 1
  Q_IPV6ADDR 1
  Q_PID 1
  Qt::HitTestAccuracy 1
  Qt::SizeHint 1
  QtMsgType 1
  RawForm 1
  RawHeaderList 1
  RegisterOptions 1
  Relation 1
  RelationFlag 1
  RenderFlags 1
  SceneLayers 1
  Sections 1
  SelectionType 1
  SequenceFormat 1
  SequenceMatch 1
  SharedMemoryError 1
  SliderAction 1
  SocketError 1
  SpecialCharacter 1
  SslMode 1
  StandardFormat 1
  StandardKey 1
  StatementType 1
  SubElement 1
  SystemSemaphoreError 1
  TabletDevice 1
  TextPosition 1
  TransferMode 1
  TransformationType 1
  UnicodeVersion 1
  UnregisterMode 1
  WritingSystem 1
  Zero 1
  ZoomMode 1
  char& 1
  const AttributesMap& 1
  const PaintContext& 1
  const QAbstractXmlNodeModel* 1
  const QByteArray 1
  const QColor 1
  const QDBusObjectPath& 1
  const QDBusPendingReply<T>& 1
  const QDBusReply& 1
  const QDBusSignature& 1
  const QDBusVariant& 1
  const QEvent* 1
  const QExplicitlySharedDataPointer<X>& 1
  const QGradient* 1
  const QGradientStops& 1
  const QHash<QStringQVariant>& 1
  const QImageTextKeyLang& 1
  const QItemSelection 1
  const QList<ExtraSelection>& 1
  const QList<FormatRange>& 1
  const QList<QGraphicsItem*>& 1
  const QList<QHostAddress>& 1
  const QList<QKeySequence>& 1
  const QList<QNetworkCookie>& 1
  const QList<QPair<QByteArrayQByteArray>>& 1
  const QList<QString>& 1
  const QList<QTextEdit::ExtraSelection>& 1
  const QList<QTextOption::Tab>& 1
  const QList<QWidget*>& 1
  const QList<WizardButton>& 1
  const QMap<QStringQVariant>& 1
  const QMap<intQVariant>& 1
  const QPaintEngineState& 1
  const QPainterPath::Element& 1
  const QPair<QHostAddressint>& 1
  const QPair<T1T2>& 1
  const QPicture* 1
  const QPixmap 1
  const QPrinter& 1
  const QScriptContext* 1
  const QScriptValueList& 1
  const QSharedData& 1
  const QSpan* 1
  const QSqlDriver* 1
  const QSqlRelation& 1
  const QSqlResult* 1
  const QStandardItem& 1
  const QStyleOptionButton& 1
  const QStyleOptionComboBox& 1
  const QStyleOptionDockWidget& 1
  const QStyleOptionFocusRect& 1
  const QStyleOptionFrameV2& 1
  const QStyleOptionFrameV3& 1
  const QStyleOptionGraphicsItem& 1
  const QStyleOptionGroupBox& 1
  const QStyleOptionHeader& 1
  const QStyleOptionMenuItem& 1
  const QStyleOptionProgressBarV2& 1
  const QStyleOptionQ3DockWindow& 1
  const QStyleOptionQ3ListView& 1
  const QStyleOptionQ3ListViewItem& 1
  const QStyleOptionRubberBand& 1
  const QStyleOptionSizeGrip& 1
  const QStyleOptionSlider& 1
  const QStyleOptionSpinBox& 1
  const QStyleOptionTabBarBaseV2& 1
  const QStyleOptionTabV3& 1
  const QStyleOptionTabWidgetFrame& 1
  const QStyleOptionTitleBar& 1
  const QStyleOptionToolBar& 1
  const QStyleOptionToolBoxV2& 1
  const QStyleOptionToolButton& 1
  const QStyleOptionViewItemV2& 1
  const QStyleOptionViewItemV3& 1
  const QStyleOptionViewItemV4& 1
  const QTestEventList& 1
  const QTextItem& 1
  const QTextLayout::FormatRange* 1
  const QVariantList& 1
  const QVector<FormatRange>& 1
  const QVector<QColor> 1
  const QVector<QLine>& 1
  const QVector<QLineF>& 1
  const QVector<QRect>& 1
  const QVector<QRectF>& 1
  const QVector<QRgb> 1
  const QVector<QRgb>& 1
  const QWebNetworkRequest& 1
  const QXmlAttributes& 1
  const QXmlInputSource& 1
  const QXmlStreamAttributes& 1
  const QXmlStreamNamespaceDeclarations& 1
  const QXmlStreamReader& 1
  const RawHeaderList& 1
  const T1& 1
  const T2& 1
  const int* 1
  const std::map<KeyT>& 1
  const uchar*const* 1
  const uint* 1
  qint16 1
  qint16& 1
  qint32& 1
  qint64& 1
  qint8 1
  qint8& 1
  quint16& 1
  quint32& 1
  quint64& 1
  quint8 1
  quint8& 1
  reference 1
  short& 1
  signedint 1
  signedint& 1
  signedlong 1
  signedlong& 1
  signedshort 1
  signedshort& 1
  std::map<KeyT> 1
  std::string 1
  std::vector<T> 1
  std::wstring 1
  uchar& 1
  uchar** 1
  unsignedchar 1
  unsignedchar* 1
  unsignedint 1
  unsignedint& 1
  unsignedlong& 1
  unsignedshort 1
  unsignedshort& 1
  va_list 1
  wchar_t* 1

Static functions (no big difference):

  const QString& 237
  int 232
  void 156
  bool 119
  QString 94
  QWidget* 65
  const char* 60
  uint 26
  QStringList 22
  QByteArray 20
  QObject* 20
  const int 20
  ushort 20
  qreal 19
  const QByteArray& 18
  QTextCodec* 15
  QColor 11
  QFont 11
  const QPoint& 11
  QPixmap 10
  const QStringList& 10
  QList<QByteArray> 9
  QRgb 9
  const QStringRef& 9
  Qt::CaseSensitivity 8
  const QFont& 8
  void* 8
  Qt::LayoutDirection 7
  bool* 7
  const QRect& 7
  QPaintDevice* 6
  Qt::HANDLE 6
  const QUrlInfo& 6
  double 6
  QAction* 5
  QChar 5
  QDBusConnection 5
  QDBusMessage 5
  QDate 5
  QDateTime 5
  QList<QSslCertificate> 5
  Qt::Alignment 5
  char 5
  const QColor& 5
  const QSize& 5
  Format 4
  MonthNameType 4
  QDir 4
  QGenericArgument 4
  QPalette 4
  QSqlDatabase 4
  QSsl::EncodingFormat 4
  QStyle* 4
  QTime 4
  QTransform 4
  StandardButton 4
  StandardButtons 4
  const QObject* 4
  const QPolygonF& 4
  const uchar* 4
  qint64 4
  unsignedlong 4
  QEvent* 3
  QIODevice* 3
  QImage 3
  QList<T> 3
  QLocale 3
  QSize 3
  QTextDocumentFragment 3
  QTransform& 3
  QUrl 3
  Qt::ConnectionType 3
  Qt::DateFormat 3
  Qt::TimeSpec 3
  Type 3
  const QCursor& 3
  const QImage& 3
  const QPaintDevice* 3
  const QPalette& 3
  const QWidget* 3
  Category 2
  ColorMode 2
  Direction 2
  Display* 2
  Endian 2
  Icon 2
  InterfaceFactory 2
  InvalidDataPolicy 2
  Joining 2
  Language 2
  Permissions 2
  QBitmap 2
  QDataStream& 2
  QDecoration* 2
  QDesignerFormWindowInterface* 2
  QEventLoop::ProcessEventsFlags 2
  QFileInfoList 2
  QGLFormat 2
  QGenericReturnArgument 2
  QGraphicsWidget* 2
  QIcon 2
  QKeySequence 2
  QLineEdit::EchoMode 2
  QList<QAction*> 2
  QList<QNetworkProxy> 2
  QList<QSslCipher> 2
  QList<int> 2
  QMatrix 2
  QNetworkInterface 2
  QPoint 2
  QRect 2
  QString& 2
  QTemporaryFile* 2
  QThread* 2
  QTranslator* 2
  QVariant 2
  QVector<T> 2
  QWebHistoryInterface* 2
  QWidgetList 2
  Qt::ApplicationAttribute 2
  Qt::ImageConversionFlags 2
  Qt::UIEffect 2
  RootObjectHandler 2
  Size 2
  StandardLocation 2
  UnicodeVersion 2
  WId 2
  WebGraphic 2
  WritingSystem 2
  const QGLFormat& 2
  const QItemSelectionRange& 2
  const QLatin1String& 2
  const QList<QSslCertificate>& 2
  const QList<T>& 2
  const QMatrix& 2
  const QNetworkProxyQuery& 2
  const QPixmap& 2
  const QTransform& 2
  const QUrl& 2
  const std::list<T>& 2
  const ushort* 2
  const void* 2
  picture_io_handler 2
  qlonglong 2
  qulonglong 2
  unsignedchar 2
  Algorithm 1
  BusType 1
  CGImageRef 1
  ColorDialogOptions 1
  Country 1
  DecoderFn 1
  Decomposition 1
  EncoderFn 1
  Encoding 1
  ErrorType 1
  Event 1
  FontDialogOptions 1
  HBITMAP 1
  HBitmapFormat 1
  HPALETTE 1
  HWND 1
  LibraryLocation 1
  OpenGLVersionFlags 1
  ParsingMode 1
  QAbstractEventDispatcher* 1
  QAbstractFileEngine* 1
  QAccessibleInterface* 1
  QClipboard* 1
  QColormap 1
  QCoreApplication* 1
  QCursor* 1
  QDBusError::ErrorType 1
  QDecoration& 1
  QDesktopWidget* 1
  QErrorMessage* 1
  QFile& 1
  QFontMetrics 1
  QHostInfo 1
  QImage::Format 1
  QInputContext* 1
  QItemEditorFactory* 1
  QItemSelection* 1
  QLatin1String 1
  QLineF 1
  QLinkedList<T> 1
  QList<Country> 1
  QList<QHostAddress> 1
  QList<QKeySequence> 1
  QList<QNetworkCookie> 1
  QList<QNetworkInterface> 1
  QList<QPrinterInfo> 1
  QList<QWebSecurityOrigin> 1
  QNetworkProxy 1
  QNetworkProxyFactory* 1
  QObjectList 1
  QPair<QHostAddressint> 1
  QPixmap& 1
  QPixmap* 1
  QPoint* 1
  QPrinterInfo 1
  QScriptSyntaxCheckResult 1
  QSet<T> 1
  QSqlDriver* 1
  QSqlDriverCreatorBase* 1
  QSslConfiguration 1
  QThreadPool* 1
  QToolButton* 1
  QUuid 1
  QWSDisplay* 1
  QWebSettings* 1
  QWidgetMapper* 1
  QXmlName 1
  Qt::GUIStyle 1
  Qt::KeyboardModifiers 1
  Qt::MacintoshVersion 1
  Qt::MouseButtons 1
  Qt::TextElideMode 1
  Qt::WindowsVersion 1
  ReadFunc 1
  Scope 1
  SequenceFormat 1
  ShareMode 1
  StandardKey 1
  WinVersion 1
  WriteFunc 1
  char** 1
  const MacVersion 1
  const QChar& 1
  const QChar* 1
  const QDBusError& 1
  const QFontMetrics& 1
  const QGLContext* 1
  const QIcon& 1
  const QItemEditorFactory* 1
  const QList<QSslCipher>& 1
  const QLocale& 1
  const QMetaObject 1
  const QNetworkProxy& 1
  const QRegExp& 1
  const QSet<T>& 1
  const QSqlDatabase& 1
  const QSslCertificate& 1
  const QSslConfiguration& 1
  const QTextDocument* 1
  const QVector<T>& 1
  const QWebDatabase& 1
  const QXmlNamePool& 1
  const T& 1
  const WinVersion 1
  const std::string& 1
  const std::vector<T>& 1
  const std::wstring& 1
  const uint* 1
  const wchar_t* 1
  long 1
  qint64* 1
  ulong 1

Protected functions (again, no surprises):

  void 310
  int 144
  bool 76
  const QString& 35
  const QModelIndex& 29
  QEvent* 21
  QPainter* 18
  QMouseEvent* 14
  QModelIndex 11
  QObject* 11
  QString 11
  const QRect& 11
  qint64 11
  QKeyEvent* 10
  const QMimeData* 10
  QVariant 9
  QFocusEvent* 8
  QGraphicsSceneDragDropEvent* 8
  QGraphicsSceneMouseEvent* 8
  QWidget* 8
  const char* 8
  QPaintEvent* 7
  const QVariant& 7
  const QStyleOptionViewItem& 6
  QContextMenuEvent* 5
  QMimeData* 5
  QSql::ParamType 5
  QWebFrame* 5
  const QRectF& 5
  const QTextBlock& 5
  const QTextFormat& 5
  const QUrl& 5
  void* 5
  QItemSelectionModel::SelectionFlags 4
  QRect 4
  QResizeEvent* 4
  QStringList 4
  QXmlNodeModelIndex 4
  Qt::DropActions 4
  const QItemSelection& 4
  const QPoint& 4
  CursorAction 3
  PaintDeviceMetric 3
  QDragEnterEvent* 3
  QDragLeaveEvent* 3
  QDragMoveEvent* 3
  QDropEvent* 3
  QGraphicsSceneHoverEvent* 3
  QInputMethodEvent* 3
  QStyleOptionButton* 3
  QStyleOptionSlider* 3
  QTextInlineObject 3
  QTreeWidgetItem* 3
  Qt::DropAction 3
  Qt::KeyboardModifiers 3
  const QByteArray& 3
  const QFont& 3
  const QNetworkRequest& 3
  const QSqlError& 3
  ConverterState* 2
  QAbstractItemView* 2
  QCloseEvent* 2
  QGraphicsItem* 2
  QGraphicsItem*[] 2
  QGraphicsSceneContextMenuEvent* 2
  QGraphicsSceneWheelEvent* 2
  QHideEvent* 2
  QLineEdit* 2
  QListWidgetItem* 2
  QModelIndexList 2
  QPaintEngine* 2
  QRectF 2
  QRegion 2
  QShowEvent* 2
  QSize 2
  QStyleOption* 2
  QStyleOptionMenuItem* 2
  QStyleOptionSpinBox* 2
  QTabBar* 2
  QTableWidgetItem* 2
  QTextBlock 2
  QTextBlockUserData* 2
  QTextCharFormat 2
  QTextDocument* 2
  QTimerEvent* 2
  QWheelEvent* 2
  SliderAction 2
  State 2
  char* 2
  const QAction* 2
  const QDate& 2
  const QHostAddress& 2
  const QModelIndexList& 2
  const QRegion& 2
  const QSqlDriver* 2
  const QSqlRecord& 2
  const QStandardItem& 2
  const QStringList& 2
  const QStyleOptionGraphicsItem[] 2
  const QXmlNodeModelIndex& 2
  int* 2
  qreal 2
  quint16 2
  BindingSyntax 1
  DropIndicatorPosition 1
  EditTrigger 1
  EventHandlerCallRef 1
  EventRef 1
  GDHandle 1
  GraphicsItemChange 1
  HDC 1
  MSG* 1
  NavigationType 1
  NetworkError 1
  OpenMode 1
  Operation 1
  ProcessState 1
  QAbstractTextDocumentLayout::PaintContext 1
  QAction* 1
  QActionEvent* 1
  QByteArray 1
  QChildEvent* 1
  QDateTime 1
  QFile::FileError 1
  QGraphicsSceneHelpEvent* 1
  QGraphicsSceneMoveEvent* 1
  QGraphicsSceneResizeEvent* 1
  QIODevice* 1
  QLayout* 1
  QLayoutItem* 1
  QList<QListWidgetItem*> 1
  QList<QNetworkCookie> 1
  QList<QTableWidgetItem*> 1
  QList<QTextBlock> 1
  QList<QTreeWidgetItem*> 1
  QList<QWidget*> 1
  QMenuItem* 1
  QMoveEvent* 1
  QNetworkAccessManager::Operation 1
  QNetworkReply* 1
  QNetworkRequest::Attribute 1
  QNetworkRequest::KnownHeaders 1
  QPicture 1
  QPoint 1
  QPointF 1
  QPrintEngine* 1
  QSizeF 1
  QSplitterHandle* 1
  QSqlDriver* 1
  QSqlError 1
  QSqlRecord 1
  QStandardItem& 1
  QString* 1
  QStyleOptionComboBox* 1
  QStyleOptionDockWidget* 1
  QStyleOptionFrame* 1
  QStyleOptionGroupBox* 1
  QStyleOptionHeader* 1
  QStyleOptionProgressBar* 1
  QStyleOptionRubberBand* 1
  QStyleOptionTab* 1
  QStyleOptionTabWidgetFrame* 1
  QStyleOptionToolButton* 1
  QStyleOptionViewItem 1
  QStyleOptionViewItem* 1
  QTabletEvent* 1
  QTextObject* 1
  QVariant::Type 1
  QVector<QVariant>& 1
  QVector<QXmlNodeModelIndex> 1
  QWSEvent* 1
  QWebPage* 1
  QWebPage::WebWindowType 1
  QWebView* 1
  QWizard* 1
  Qt::CheckState 1
  Qt::InputMethodQuery 1
  Qt::SizeHint 1
  Qt::WindowFrameSection 1
  QtMsgType 1
  SimpleAxis 1
  SliderChange 1
  SocketError 1
  SocketState 1
  StepEnabled 1
  WId 1
  WebWindowType 1
  XEvent* 1
  const QChar* 1
  const QColor& 1
  const QDateTime& 1
  const QEvent* 1
  const QGLContext* 1
  const QList<QListWidgetItem*> 1
  const QList<QNetworkCookie>& 1
  const QList<QTableWidgetItem*> 1
  const QList<QTreeWidgetItem*> 1
  const QObject* 1
  const QPixmap& 1
  const QPointF& 1
  const QScriptValue& 1
  const QSizeF& 1
  const QSourceLocation& 1
  const QSqlIndex& 1
  const QSqlQuery& 1
  const QTextCharFormat& 1
  long* 1
  quint32 1
  quintptr 1
  uint 1

Here are some counts of the types involved in slots:
   Feature 1 
   Priority  1 
   QAbstractItemView* 1 
   QAction* 1 
   QDBusReply<QDBusConnectionInterface::RegisterServiceReply> 1 
   QDBusReply<QString> 1 
   QDBusReply<QStringList> 1 
   QDBusReply<void> 1 
   QHelpEvent* 1 
   QMdiSubWindow* 1 
   QMovie* 1 
   QPrinter::Orientation 1 
   QToolButton::TextPosition 1 
   QUndoGroup* 1 
   QVariant 1 
   QXmlStreamReader* 1 
   Qt::Alignment 1 
   ServiceQueueOptions 1 
   ViewMode 1 
   ZoomMode 1 
   const QDateTime& 1 
   const QItemSelection& 1 
   const QList<QHelpSearchQuery>& 1 
   const QList<QRectF>& 1 
   const QListWidgetItem* 1 
   const QPicture& 1 
   const QPixmap& 1 
   const QPoint& 1 
   const QRect& 1 
   const QStyleOptionViewItem& 1 
   const QTableWidgetItem* 1 
   const QTime& 1 
   const QUrl& 1 
   const QVariant& 1 
   const bool 1 
   const int 1 
   QDBusReply<bool> 2 
   QDBusReply<uint> 2 
   QObject* 2 
   QPrinter*   2 
   QUndoStack* 2 
   Qt::ToolButtonStyle 2 
   const QByteArray& 2 
   const QFont& 2 
   const QSize& 2 
   QAbstractItemView::ScrollHint 3 
   QItemSelectionModel::SelectionFlags 3 
   QPainter* 3 
   Qt::Orientation 3 
   const QColor& 3 
   const QTreeWidgetItem* 3 
   double 3 
   const QDate& 4 
   QDesignerFormWindowInterface* 5 
   qreal 5 
   const QRectF& 6 
   QWidget* 10 
   const QModelIndex& 11 
   const QString& 50 
   bool 58 
   int 68
   void 410

Slot return types specifically:
   QDBusReply<QDBusConnectionInterface::RegisterServiceReply> 1 
   QDBusReply<QString> 1 
   QDBusReply<QStringList> 1 
   QDBusReply<void> 1 
   QVariant 1 
   QDBusReply<bool> 2 
   QDBusReply<uint> 2 
   int 4 
   bool   12 
   void 410
