| ►NQPatternist | Namespace containing classes and functions required by the QtXmlPatterns library | 
| CQtXmlPatterns | Provides a translation context & functions for the CsXmlPatterns library | 
| ►NQtConcurrent | Provides high-level APIs to write multi-threaded programs without using low-level threading primitives | 
| CException | The QtConcurrent::Exception class provides a base class for exceptions that can transferred across threads | 
| CUnhandledException | Unhandled exception in a worker thread | 
| CCsLibraryInfo | Structure which provides information related to how CopperSpice was built | 
| CQAbstractAnimation | Base class for all animations | 
| CQAbstractButton | Abstract base class of button widgets, providing functionality common to buttons | 
| CQAbstractEventDispatcher | Interface to manage the event queue | 
| ►CQAbstractFileEngine | The QAbstractFileEngine is a base class abstraction for accessing the file system | 
| CExtensionOption | Provides an extended input argument to QAbstractFileEngine's extension support | 
| CExtensionReturn | Provides an extended output argument to QAbstractFileEngine's extension support | 
| CMapExtensionOption | Indicates a file engine supports the map() method | 
| CMapExtensionReturn | Indicates a file engine which supports returning an address from the map() method | 
| CUnMapExtensionOption | Indicates a file engine supports the unmap() method | 
| CQAbstractFileEngineHandler | Supports a mechanism to register custom file engines with your application | 
| CQAbstractFileEngineIterator | Iterator interface for custom file engines | 
| CQAbstractGraphicsShapeItem | Common base for all path items | 
| CQAbstractItemDelegate | Used to display and edit data items from a model | 
| CQAbstractItemModel | Abstract interface for item model classes | 
| CQAbstractItemView | Basic functionality for item view classes | 
| CQAbstractListModel | Abstract model that can be subclassed to create one-dimensional list models | 
| CQAbstractMessageHandler | Callback interface for handling messages | 
| CQAbstractNativeEventFilter | Provides an interface for receiving native events, such as MSG or XCB event structs | 
| CQAbstractNetworkCache | Interface for cache implementations | 
| CQAbstractPlanarVideoBuffer | Abstraction for planar video data | 
| CQAbstractPrintDialog | Base implementation for print dialogs used to configure printers | 
| CQAbstractProxyModel | Provides a base class for proxy item models that can do sorting, filtering, or other data processing tasks | 
| CQAbstractScrollArea | Scrolling area with on-demand scroll bars | 
| CQAbstractSlider | Integer value within a range | 
| CQAbstractSocket | Provides the base functionality common to all socket types | 
| CQAbstractSpinBox | Spinbox and a line edit to display values | 
| CQAbstractState | Base class for states in a QStateMachine | 
| CQAbstractTableModel | Abstract model that can be subclassed to create table models | 
| ►CQAbstractTextDocumentLayout | An abstract base class used to implement custom layouts for QTextDocument | 
| CPaintContext | A nested class which defines the parameters used when painting a document layout | 
| CSelection | A nested class which defines the parameters of a document selection | 
| CQAbstractTransition | Base class of transitions between QAbstractState objects | 
| CQAbstractUriResolver | Callback interface for resolving Uniform Resource Identifiers | 
| CQAbstractVideoBuffer | Abstraction for video data | 
| CQAbstractVideoFilter | Represents a filter applied to the video frames received by a VideoOutput type | 
| CQAbstractVideoSurface | Base class for video presentation surfaces | 
| CQAbstractXmlNodeModel | Abstract base class for modeling non-XML data to look like XML for QXmlQuery | 
| CQAbstractXmlReceiver | Callback interface for transforming the output of a QXmlQuery | 
| ►CQAccessible | Enums and static functions relating to accessibility | 
| CState | Structure which defines bit flags that indicate the state of an accessible object | 
| CQAccessibleActionInterface | Implements support for invocable actions in the interface | 
| CQAccessibleBridge | Base class for accessibility back-ends | 
| CQAccessibleBridgePlugin | Abstract base for accessibility bridge plugins | 
| CQAccessibleEvent | Base class for accessibility notifications | 
| CQAccessibleInterface | Defines an interface that exposes information about accessible objects | 
| CQAccessibleObject | Implements parts of the QAccessibleInterface for QObjects | 
| CQAccessiblePlugin | Abstract base for accessibility plugins | 
| CQAccessibleTableCellInterface | Implements support for the IAccessibleTable2 Cell interface | 
| CQAccessibleTableInterface | Implements support for the IAccessibleTable2 interface | 
| CQAccessibleTableModelChangeEvent | Indicates a change in a table, list, or tree when cells are added or removed | 
| CQAccessibleTextInterface | Implements support for text handling | 
| CQAccessibleValueInterface | Support for objects which represent a value | 
| CQAccessibleWidget | Implements the QAccessibleInterface for QWidgets | 
| CQAction | Stores information about a process or command which can be added to a menu or a toolbar | 
| CQActionEvent | Event that is generated when a QAction is added, removed, or changed | 
| CQActionGroup | Groups actions together | 
| CQAnimationGroup | Abstract base class for groups of animations | 
| CQApplication | Manages the control flow and main settings of a GUI application | 
| CQAtomicInt | Platform independent atomic operations on integers | 
| CQAtomicPointer | Template providing platform independent atomic operations on pointers | 
| ►CQAudioBuffer | Collection of audio samples with a specific format and sample rate | 
| CStereoFrame | Simple wrapper for a stereo audio frame | 
| CQAudioDecoder | Allows decoding audio | 
| CQAudioDecoderControl | Provides access to the audio decoding functionality of a QMediaService | 
| CQAudioDeviceInfo | Interface to query audio devices and their functionality | 
| CQAudioEncoderSettings | Set of audio encoder settings | 
| CQAudioEncoderSettingsControl | Provides access to the settings of a media service that performs audio encoding | 
| CQAudioFormat | Stores audio stream parameter information | 
| CQAudioInput | Interface for receiving audio data from an audio input device | 
| CQAudioInputSelectorControl | Audio input selector media control | 
| CQAudioOutput | Interface for sending audio data to an audio output device | 
| CQAudioOutputSelectorControl | Audio output selector media control | 
| CQAudioProbe | Allows monitoring audio being played or recorded | 
| CQAudioRecorder | Used for the recording of audio | 
| CQAudioRoleControl | Provides control over the audio role of a media object | 
| CQAuthenticator | Authentication object | 
| CQBackingStore | Provides a drawing area for QWindow | 
| CQBasicTimer | Timer events for objects | 
| CQBitArray | Stores an array of bits | 
| CQBitmap | Monochrome (1-bit depth) pixmaps | 
| CQBoxLayout | Lines up child widgets horizontally or vertically | 
| CQBrush | Defines the fill pattern of shapes drawn by QPainter | 
| CQBuffer | QIODevice interface for a QByteArray | 
| CQButtonGroup | Container to organize groups of button widgets | 
| CQByteArray | Stores a sequence of bytes | 
| CQCache | Used to store elements in a cache container | 
| CQCalendarWidget | Monthly based calendar widget allowing the user to select a date | 
| ►CQCamera | Interface for system camera devices | 
| CFrameRateRange | Represents a range of frame rates as minimum and maximum rate | 
| CQCameraCaptureBufferFormatControl | Provides a control for setting the capture buffer format | 
| CQCameraCaptureDestinationControl | Control for setting capture destination | 
| CQCameraControl | Abstract base class for classes which control still cameras or video cameras | 
| CQCameraExposure | Provides an interface for exposure related camera settings | 
| CQCameraExposureControl | Allows controlling camera exposure parameters | 
| CQCameraFeedbackControl | Allows controlling feedback during camera operation | 
| CQCameraFlashControl | Allows controlling a camera's flash | 
| CQCameraFocus | An interface for focus and zoom related camera settings | 
| CQCameraFocusControl | Supplies control for focusing related camera parameters | 
| CQCameraFocusZone | Provides information on zones used for autofocusing a camera | 
| CQCameraImageCapture | Used for recording media content from a camera device | 
| CQCameraImageCaptureControl | Provides a control interface for image capture services | 
| CQCameraImageProcessing | Provides an interface for image processing related camera settings | 
| CQCameraImageProcessingControl | Provides an abstract class for controlling image processing parameters | 
| CQCameraInfo | Provides general information about camera devices | 
| CQCameraInfoControl | Camera info media control | 
| CQCameraLocksControl | Abstract base class for classes which control still cameras or video cameras | 
| CQCameraViewfinder | Provides a camera viewfinder widget | 
| CQCameraViewfinderSettings | Provides a set of viewfinder settings | 
| CQCameraViewfinderSettingsControl | Provides an abstract class for controlling camera viewfinder parameters | 
| CQCameraViewfinderSettingsControl2 | Provides access to the viewfinder settings of a camera media service | 
| CQCameraZoomControl | Supplies control for optical and digital camera zoom | 
| CQChar | Typedef for the QChar32 class | 
| CQChar32 | Implements a 32-bit Unicode code point | 
| CQCheckBox | Checkbox with a text label | 
| CQChildEvent | Event parameters for child object events | 
| CQClipboard | Access to the window system clipboard | 
| CQCloseEvent | Parameters that describe a close event | 
| CQColor | Colors based on RGB, HSV or CMYK values | 
| CQColorDialog | Provides a dialog widget for specifying colors | 
| CQColormap | Maps device independent QColors to device dependent pixel values | 
| CQColumnView | Model/view implementation of a column view | 
| CQComboBox | Combined button and popup list | 
| CQCommandLineOption | Defines a possible command-line option | 
| CQCommandLineParser | Provides a way to process command line options | 
| CQCommandLinkButton | Vista style command link button | 
| CQCommonStyle | Encapsulates the common look and feel of a GUI | 
| CQCompleter | Completions based on an item model | 
| CQConicalGradient | Used in combination with QBrush to specify a conical gradient brush | 
| CQContextMenuEvent | Parameters that describe a context menu event | 
| CQContiguousCache | Container providing a contiguous cache | 
| CQCoreApplication | Implements an event loop for console applications | 
| CQCryptographicHash | Way to generate cryptographic hashes | 
| CQCursor | Mouse cursor with an arbitrary shape | 
| CQDataStream | Serialization of binary data to a QIODevice | 
| CQDataWidgetMapper | Mapping between a section of a data model to widgets | 
| CQDate | Stores a calendar date which consists of a month, day, and year | 
| CQDateEdit | Widget for editing dates based on the QDateTimeEdit widget | 
| CQDateTime | Stores date and time information | 
| CQDateTimeEdit | Provides a widget for editing dates and times | 
| CQDebug | Generates output for debugging | 
| CQDebugStateSaver | Custom QDebug operators | 
| CQDesktopServices | Provides methods for accessing common desktop services | 
| CQDesktopWidget | Access to screen information on multi-head systems | 
| CQDial | Rounded range control (like a speedometer or potentiometer) | 
| CQDialog | Base class of dialog windows | 
| CQDialogButtonBox | A widget which displays buttons in a layout appropriate to the current widget style | 
| CQDir | Information about a given directory | 
| CQDirIterator | Iterator for directory entrylists | 
| CQDirModel | Data model for the local file system | 
| CQDnsDomainNameRecord | Stores information about a domain name record | 
| CQDnsHostAddressRecord | Stores information about a host address record | 
| CQDnsLookup | DNS lookup | 
| CQDnsMailExchangeRecord | Stores information about a DNS MX record | 
| CQDnsServiceRecord | Stores information about a DNS SRV record | 
| CQDnsTextRecord | Stores information about a DNS TXT record | 
| CQDockWidget | Widget that can be docked inside a QMainWindow or floated as a top-level window | 
| CQDomAttr | One attribute of a QDomElement | 
| CQDomCDATASection | XML CDATA section | 
| CQDomCharacterData | Generic string in the DOM | 
| CQDomComment | XML comment | 
| CQDomDocument | XML document | 
| CQDomDocumentFragment | Tree of QDomNodes which is not usually a complete QDomDocument | 
| CQDomDocumentType | Representation of the DTD in the document tree | 
| CQDomElement | One element in the DOM tree | 
| CQDomEntity | XML entity | 
| CQDomEntityReference | XML entity reference | 
| CQDomImplementation | Information about the features of the DOM implementation | 
| CQDomNamedNodeMap | Collection of nodes that can be accessed by name | 
| CQDomNode | Base class for all the nodes in a DOM tree | 
| CQDomNodeList | List of QDomNode objects | 
| CQDomNotation | XML notation | 
| CQDomProcessingInstruction | XML processing instruction | 
| CQDomText | Text data in the parsed XML document | 
| CQDoubleSpinBox | Spin box widget that takes doubles | 
| CQDoubleValidator | Range checking of floating-point numbers | 
| CQDrag | Support for MIME-based drag and drop data transfer | 
| CQDragEnterEvent | Event which is sent to a widget when a drag and drop action enters it | 
| CQDragLeaveEvent | Event that is sent to a widget when a drag and drop action leaves it | 
| CQDragMoveEvent | Event which is sent while a drag and drop action is in progress | 
| CQDropEvent | Event which is sent when a drag and drop action is completed | 
| CQDynamicPropertyChangeEvent | Event parameters for dynamic property change events | 
| CQEasingCurve | Easing curves for controlling animation | 
| CQElapsedTimer | Fast way to calculate elapsed times | 
| CQEnableSharedFromThis | Base class which provides a QSharedPointer for an existing object | 
| CQEnterEvent | Parameters that describe an enter event | 
| CQErrorMessage | Error message display dialog | 
| CQEvent | Base class for all event classes | 
| CQEventLoop | Means of entering and leaving an event loop | 
| CQEventTransition | QObject specific transition for events | 
| CQExplicitlySharedDataPointer | Pointer to an explicitly shared object | 
| CQExposeEvent | Event parameters for expose events | 
| CQFile | Used to read and write to an open file | 
| CQFileDevice | Base class for reading and writing to an open file | 
| CQFileDialog | Provides a dialog which allow the selection of files or directories | 
| CQFileIconProvider | File icons for the QDirModel and the QFileSystemModel classes | 
| CQFileInfo | Information about a given file | 
| CQFileOpenEvent | Event that will be sent when there is a request to open a file or a URL | 
| CQFileSystemModel | Data model for the local file system | 
| CQFileSystemWatcher | Provides an interface for monitoring files and directories for modifications | 
| CQFinalState | Final state | 
| CQFlags | Provides a type safe mechanism for representing bitwise-or combinations of enum values | 
| ►CQFlatMap | Template class which uses a vector to implement a sorted map | 
| Cconst_iterator | STL style const iterator for QFlatMap | 
| Citerator | STL style iterator for QFlatMap | 
| CQFlatMapIterator | Java style const iterator for QFlatMap | 
| CQFocusEvent | Event parameters for widget focus events | 
| CQFocusFrame | Focus frame which can be outside of a widget's normal paintable area | 
| CQFont | Specifies a font used for drawing text | 
| CQFontComboBox | Combobox that lets the user select a font family | 
| CQFontDatabase | Information about the fonts available in the underlying window system | 
| CQFontDialog | Provides a dialog widget for selecting a font | 
| CQFontInfo | General information about fonts | 
| CQFontMetrics | Font metrics information | 
| CQFontMetricsF | Provides font metrics information | 
| CQFormLayout | Manages forms of input widgets and their associated labels | 
| CQFrame | Base class for all widgets which can have a frame | 
| CQFSFileEngine | Implements the default file engine | 
| CQFtp | Implementation of the client side of FTP protocol | 
| CQFusionStyle | Provides a modern platform widget style | 
| ►CQFuture | Result of an asynchronous computation | 
| Cconst_iterator | Implements an STL style const iterator for QFuture | 
| CQFutureIterator | Java-style const iterator for QFuture | 
| CQFutureSynchronizer | Simplifies QFuture synchronization | 
| CQFutureWatcher | Allows monitoring a QFuture using signals and slots | 
| CQFutureWatcherBase | Base class for QFutureWatcher | 
| CQGenericMatrix | Template class that represents a NxM transformation matrix with N columns and M rows | 
| CQGenericPlugin | Abstract base class for window-system related plugins | 
| CQGenericPluginFactory | Creates plugin drivers | 
| CQGesture | Gesture, containing properties that describe the corresponding user input | 
| CQGestureEvent | Description of triggered gestures | 
| CQGestureRecognizer | Infrastructure for gesture recognition | 
| CQGLBuffer | Functions for creating and managing GL buffer objects | 
| CQGLColormap | Used for installing custom colormaps into a QGLWidget | 
| CQGLContext | Encapsulates an OpenGL rendering context | 
| CQGLFormat | Display format of an OpenGL rendering context | 
| CQGLFramebufferObject | Encapsulates an OpenGL framebuffer object | 
| CQGLFramebufferObjectFormat | Format of an OpenGL framebuffer object | 
| CQGLFunctions | Cross-platform access to the OpenGL ES 2.0 API | 
| CQGLPixelBuffer | Encapsulates an OpenGL pbuffer | 
| CQGLShader | Allows OpenGL shaders to be compiled | 
| CQGLShaderProgram | Allows OpenGL shader programs to be linked and used | 
| CQGLWidget | Widget for rendering OpenGL graphics | 
| CQGlyphRun | Direct access to the internal glyphs in a font | 
| CQGradient | QGradient class is used in combination with QBrush to specify gradient fills | 
| CQGraphicsAnchor | Anchor between two items in a QGraphicsAnchorLayout | 
| CQGraphicsAnchorLayout | Layout where one can anchor widgets together in Graphics View | 
| CQGraphicsBlurEffect | Blur effect | 
| CQGraphicsColorizeEffect | Colorize effect | 
| CQGraphicsDropShadowEffect | Drop shadow effect | 
| CQGraphicsEffect | Base class for all graphics effects | 
| CQGraphicsEllipseItem | Ellipse item which can added to a QGraphicsScene | 
| CQGraphicsGridLayout | Grid layout for managing widgets in Graphics View | 
| CQGraphicsItem | Base class for all graphical items in a QGraphicsScene | 
| CQGraphicsItemAnimation | Simple animation support for QGraphicsItem | 
| CQGraphicsItemGroup | Container that treats a group of items as a single item | 
| CQGraphicsLayout | Base class for all layouts in a Graphics View | 
| CQGraphicsLayoutItem | Can be inherited to allow your custom items to be managed by layouts | 
| CQGraphicsLinearLayout | Horizontal or vertical layout for managing widgets in Graphics View | 
| CQGraphicsLineItem | QGraphicsLineItem class provides a line item you can add to a QGraphicsScene | 
| CQGraphicsObject | Base class for all graphics items that require signals, slots and properties | 
| CQGraphicsOpacityEffect | Opacity effect | 
| CQGraphicsPathItem | Path item that you can add to a QGraphicsScene | 
| CQGraphicsPixmapItem | Pixmap item which can be added to a QGraphicsScene | 
| CQGraphicsPolygonItem | Polygon item that you can add to a QGraphicsScene | 
| CQGraphicsProxyWidget | Proxy layer for embedding a QWidget in a QGraphicsScene | 
| CQGraphicsRectItem | Rectangle item which can be added to a QGraphicsScene | 
| CQGraphicsRotation | Rotation transformation around a given axis | 
| CQGraphicsScale | Scale transformation | 
| CQGraphicsScene | Provides a surface for managing a large number of 2D graphical items | 
| CQGraphicsSceneContextMenuEvent | Context menu events in the graphics view system | 
| CQGraphicsSceneDragDropEvent | Events for drag and drop in the graphics view system | 
| CQGraphicsSceneEvent | Base class for all graphics view related events | 
| CQGraphicsSceneHelpEvent | Events when a tooltip is requested | 
| CQGraphicsSceneHoverEvent | Hover events in the graphics view system | 
| CQGraphicsSceneMouseEvent | Mouse events in the graphics view system | 
| CQGraphicsSceneMoveEvent | Events for widget moving in the graphics view system | 
| CQGraphicsSceneResizeEvent | Events for widget resizing in the graphics view system | 
| CQGraphicsSceneWheelEvent | Provides wheel events in the graphics view system | 
| CQGraphicsSimpleTextItem | Simple text path item that you can add to a QGraphicsScene | 
| CQGraphicsSvgItem | QGraphicsItem which can be used to render the contents of SVG files | 
| CQGraphicsTextItem | Text item which can be added to a QGraphicsScene to display formatted text | 
| CQGraphicsTransform | Abstract base class for building advanced transformations on QGraphicsItems | 
| CQGraphicsVideoItem | Graphics item object which displays video produced by a QMediaObject | 
| CQGraphicsView | Widget for displaying the contents of a QGraphicsScene | 
| CQGraphicsWebView | Allows Web content to be added to a GraphicsView | 
| CQGraphicsWidget | Base class for all widget items in a QGraphicsScene | 
| CQGridLayout | Lays out widgets in a grid | 
| CQGroupBox | Group box frame with a title | 
| CQGtkStyle | Provides a widget style rendered by GTK+ | 
| ►CQHash | Template class which provides an unordered container of keys and values | 
| Cconst_iterator | STL style const iterator for QHash | 
| Citerator | STL style non-const iterator for QHash | 
| CQHashIterator | Java style const iterator for QHash | 
| CQHBoxLayout | Lines up widgets horizontally | 
| CQHeaderView | Provides headers for item views | 
| CQHelpEvent | Indicates a request for information about a particular widget | 
| CQHideEvent | Event which is sent after a widget is hidden | 
| CQHistoryState | Provides a means of returning to a previously active substate | 
| CQHostAddress | IP address | 
| CQHostInfo | Static functions for host name lookups | 
| CQHoverEvent | Parameters which describe a mouse event | 
| CQHttpMultiPart | Represents a MIME multipart message to be sent over HTTP | 
| CQHttpPart | Holds a body part to be used inside a HTTP multipart MIME message | 
| CQHttpRequestHeader | Contains request header information for HTTP | 
| CQHttpResponseHeader | Response header information for HTTP | 
| CQIcon | Scalable icons in different modes and states | 
| CQIconDragEvent | Indicates a window icon drag has begun | 
| ►CQIconEngine | Provides an abstract base class for QIcon renderers | 
| CAvailableSizesArgument | Structure which represents arguments to the virtual_hook() function | 
| CQIconEnginePlugin | Provides an abstract base for custom QIconEngine plugins | 
| CQIdentityProxyModel | Proxies its source model unmodified | 
| CQImage | Represents a bit map image | 
| CQImageEncoderControl | Provides access to the settings of a media service that performs image encoding | 
| CQImageEncoderSettings | Provides a set of image encoder settings | 
| CQImageIOHandler | Defines the common image I/O interface for all image formats | 
| CQImageIOPlugin | Defines an interface for writing an image format plugin | 
| CQImageReader | Format independent interface for reading images from files or other devices | 
| CQImageWriter | Provides a format independent interface for writing images to files or other devices | 
| CQInputDialog | Simple convenience dialog to get a single value from the user | 
| CQInputEvent | Base class for events that describe user input | 
| CQInputMethod | Access to the active text input method | 
| ►CQInputMethodEvent | Parameters for input method events | 
| CAttribute | The QInputMethodEvent::Attribute class stores an input method attribute | 
| CQInputMethodQueryEvent | Event sent by the input context to input objects | 
| CQIntValidator | Validator that ensures a string contains a valid integer within a specified range | 
| CQIODevice | Base interface class of all I/O devices | 
| CQItemDelegate | Display and editing facilities for data items from a model | 
| CQItemEditorCreator | This class makes it possible to create item editor creator bases without subclassing QItemEditorCreatorBase | 
| CQItemEditorCreatorBase | Provides an abstract base class which must be subclassed when implementing new item editor creators | 
| CQItemEditorFactory | Widgets for editing item data in views and delegates | 
| CQItemSelection | Manages information about selected items in a model | 
| CQItemSelectionModel | Keeps track of a view's selected items | 
| CQItemSelectionRange | Manages information about a range of selected items in a model | 
| CQJsonArray | Encapsulates a JSON array | 
| CQJsonDocument | Provides a way to read and write JSON documents | 
| CQJsonObject | Encapsulates a JSON object | 
| CQJsonParseError | Used to report errors during JSON parsing | 
| CQJsonValue | Encapsulates a value in JSON | 
| CQKeyEvent | Describes a key event | 
| CQKeyEventTransition | Transition for key events | 
| CQKeySequence | Encapsulates a key sequence as used by shortcuts | 
| CQKeySequenceEdit | Allows the user to specify a QKeySequence | 
| CQLabel | Text or image display | 
| CQLayout | Base class of geometry managers | 
| CQLayoutItem | Abstract item that a QLayout manipulates | 
| CQLCDNumber | Displays a number with LCD digits | 
| CQLibrary | Loads shared libraries at runtime | 
| CQLibraryInfo | Information about how CopperSpice was built | 
| CQLine | Two-dimensional vector using integer precision | 
| CQLinearGradient | Used in combination with QBrush to specify a linear gradient brush | 
| CQLineEdit | Single line text edit widget | 
| CQLineF | Two-dimensional vector using floating point precision | 
| ►CQLinkedList | Template class which stores values in a linked list | 
| Cconst_iterator | The QLinkedList::const_iterator class provides an STL const iterator for QLinkedList | 
| Citerator | The QLinkedList::iterator class provides an STL style iterator for QLinkedList | 
| CQLinkedListIterator | Java style const iterator for QLinkedList | 
| ►CQList | Template class which stores a list of values | 
| Cconst_iterator | The QList::const_iterator class provides an STL style const iterator for QList and QQueue | 
| Citerator | The QList::iterator class provides an STL style iterator for QList and QQueue | 
| CQListIterator | Java style const iterator for QList and QQueue | 
| CQListView | Provides a list or icon view onto a model | 
| CQListWidget | Provides an item based list widget | 
| CQListWidgetItem | Item for use with the QListWidget item view class | 
| CQLocale | Formats data based on a given language or country | 
| CQLocalServer | Local socket based server | 
| CQLocalSocket | Local socket | 
| CQLockFile | Locking between processes using a file | 
| CQMacCocoaViewContainer | Provides a widget for OS X which is used to wrap arbitrary Cocoa views | 
| CQMacNativeWidget | A class for creating Cocoa native widgets | 
| CQMacStyle | Provides a Max OS X style using the Apple Appearance Manager | 
| CQMainWindow | QMainWindow class provides the main GUI application window | 
| ►CQMap | Template class which provides a sorted container of keys and values | 
| Cconst_iterator | STL style const iterator for QMap | 
| Citerator | STL style iterator for QMap | 
| CQMapIterator | Java style const iterator for QMap | 
| CQMargins | Defines the four margins of a rectangle | 
| CQMarginsF | Defines the four margins of a rectangle | 
| CQMatrix | 2D transformations of a coordinate system | 
| CQMatrix4x4 | 4x4 transformation matrix in 3D space | 
| CQMdiArea | Area in which MDI windows are displayed | 
| CQMdiSubWindow | Subwindow class for QMdiArea | 
| CQMediaAudioProbeControl | Allows control over probing audio data in media objects | 
| CQMediaAvailabilityControl | Supplies a control for reporting availability of a service | 
| CQMediaBindableInterface | Base class for objects extending media objects functionality | 
| CQMediaContainerControl | Provides access to the output container format of a QMediaService | 
| CQMediaContent | Provides access to the resources relating to a media content | 
| CQMediaControl | Base interface for media service controls | 
| CQMediaGaplessPlaybackControl | Provides access to the gapless playback related control of a QMediaService | 
| CQMediaMetaData | Provides identifiers for meta-data attributes | 
| CQMediaNetworkAccessControl | Allows the setting of the Network Access Point for media related activities | 
| CQMediaObject | Provides a common base for multimedia objects | 
| CQMediaPlayer | Allows the playing of a media source | 
| CQMediaPlayerControl | Provides access to the media playing functionality of a QMediaService | 
| CQMediaPlaylist | Provides a list of media content to play | 
| CQMediaRecorder | Used for the recording of media content | 
| CQMediaRecorderControl | Provides access to the recording functionality of a QMediaService | 
| CQMediaResource | Description of a media resource | 
| CQMediaService | Provides a common base class for media service implementations | 
| CQMediaServiceCameraInfoInterface | Provides camera specific information about devices supported by a camera service | 
| CQMediaServiceDefaultDeviceInterface | Interface identifies the default device used by a media service plugin | 
| CQMediaServiceFeaturesInterface | Interface identifies features supported by a media service plugin | 
| CQMediaServiceProviderPlugin | Provides an interface for QMediaService plugins | 
| CQMediaServiceSupportedDevicesInterface | Interface identifies the devices supported by a media service plugin | 
| CQMediaServiceSupportedFormatsInterface | Interface identifies if a media service plugin supports a media format | 
| CQMediaStreamsControl | Media stream selection control | 
| CQMediaTimeInterval | Time interval with integer precision | 
| CQMediaTimeRange | Set of zero or more disjoint time intervals | 
| CQMediaVideoProbeControl | Allows control over probing video frames in media objects | 
| CQMenu | Provides a menu widget for use in menu bars, context menus, and other popup menus | 
| CQMenuBar | Horizontal menu bar | 
| CQMessageAuthenticationCode | Provides a way to generate hash-based message authentication codes | 
| CQMessageBox | Modal dialog for informing the user or for asking the user a question and receiving an answer | 
| CQMetaClassInfo | Additional information about a class | 
| CQMetaDataReaderControl | Provides read access to the meta-data of a QMediaService's media | 
| CQMetaDataWriterControl | Controls write access to the meta data of a QMediaService's media | 
| CQMetaEnum | Provides meta data about an enumerator | 
| CQMetaMethod | Meta data for a given method | 
| CQMetaObject | Stores meta information about objects | 
| CQMetaProperty | Meta data about a property | 
| CQMimeData | Container for data and the associated MIME type | 
| CQModelIndex | Used to locate data in a data model | 
| CQMouseEvent | Parameters that describe a mouse event | 
| CQMouseEventTransition | Transition for mouse events | 
| CQMoveEvent | Event parameters for move events | 
| CQMovie | Plays movies loaded with QImageReader | 
| ►CQMultiHash | Template class which provides an unordered container of keys and values, allows duplicate keys | 
| Cconst_iterator | STL style const iterator for QMultiHash | 
| Citerator | STL style non-const iterator for QMultiHash | 
| CQMultiHashIterator | Java style const iterator for QMultiHash | 
| ►CQMultiMap | Template class which provides a sorted container of keys and values, allows duplicate keys | 
| Cconst_iterator | STL style const iterator for QMultiMap | 
| Citerator | STL style iterator for QMultiMap | 
| CQMultiMapIterator | Java style const iterator for QMultiMap | 
| CQMutableFlatMapIterator | Java style non-const iterator for QFlatMap | 
| CQMutableHashIterator | Java style non-const iterator for QHash | 
| CQMutableLinkedListIterator | Java style iterator for QLinkedList | 
| CQMutableListIterator | Java style iterator for QList and QQueue | 
| CQMutableMapIterator | Java style non-const iterator for QMap | 
| CQMutableMultiHashIterator | Java style non-const iterator for QMultiHash | 
| CQMutableMultiMapIterator | Java style non-const iterator for QMultiMap | 
| CQMutableSetIterator | Java style iterator for QSet | 
| CQMutableVectorIterator | Java style iterator for QVector and QStack | 
| CQMutex | Provides exclusive access to a block of code by different threads | 
| CQMutexLocker | Simplifies locking and unlocking mutexes | 
| CQNativeGestureEvent | Parameters that describe a gesture event | 
| CQNetworkAccessManager | Allows the application to send network requests and receive replies | 
| CQNetworkAddressEntry | Stores one IP address supported by a network interface, along with its associated netmask and broadcast address | 
| CQNetworkCacheMetaData | Cache information | 
| CQNetworkConfiguration | Class provides an abstraction of one or more access point configurations | 
| CQNetworkConfigurationManager | Manages the network configurations provided by the system | 
| CQNetworkCookie | Class holds one network cookie | 
| CQNetworkCookieJar | Implements a simple jar of QNetworkCookie objects | 
| CQNetworkDiskCache | Very basic disk cache | 
| CQNetworkInterface | Listing of the host's IP addresses and network interfaces | 
| CQNetworkProxy | Network layer proxy | 
| CQNetworkProxyFactory | Provides the ability to select a proxy | 
| CQNetworkProxyQuery | Used to query the proxy settings for a socket | 
| CQNetworkReply | Data and headers for a request sent with QNetworkAccessManager | 
| CQNetworkRequest | Holds a request to be sent with QNetworkAccessManager | 
| CQNetworkSession | Provides control over the system's access points and enables session management | 
| CQObject | Base class of all CopperSpice objects | 
| CQObjectCleanupHandler | Watches the lifetime of multiple QObjects | 
| CQOffscreenSurface | Offscreen surface in the underlying platform | 
| CQOpenGLBuffer | Methods for creating and managing OpenGL buffer objects | 
| CQOpenGLContext | Represents a native OpenGL context which is used to render OpenGL content on a QSurface | 
| CQOpenGLContextGroup | Group of contexts sharing OpenGL resources | 
| CQOpenGLExtraFunctions | Cross platform access to the OpenGL ES 3.0, 3.1 and 3.2 API | 
| CQOpenGLFramebufferObject | Encapsulates an OpenGL framebuffer object | 
| CQOpenGLFunctions | Cross-platform access to the OpenGL ES 2.0 API | 
| CQOpenGLPaintDevice | Enables painting to an OpenGL context using QPainter | 
| CQOpenGLShaderProgram | Allows OpenGL shader programs to be linked and used | 
| CQOpenGLWidget | Widget for rendering OpenGL graphics | 
| CQOpenGLWindow | Subclass of QWindow used to perform OpenGL painting | 
| CQPagedPaintDevice | Represents a paint device which supports multiple pages | 
| CQPageLayout | Describes the size, orientation and margins of a page | 
| CQPageSetupDialog | Provides a configuration dialog for the page-related options on a printer | 
| CQPageSize | Describes information about standard page sizes | 
| CQPaintDevice | Base class of objects that can be painted | 
| CQPaintDeviceWindow | Subclass of the QWindow class | 
| CQPaintEngine | Abstract definition of how QPainter draws to a given device on a given platform | 
| CQPaintEngineState | Information about the active paint engine's current state | 
| ►CQPainter | Performs low level painting operations on widgets and other paint devices | 
| CPixmapFragment | A class used in conjunction with QPainter::drawPixmapFragments() to specify how a pixmap is drawn | 
| ►CQPainterPath | Container for painting operations, enabling graphical shapes to be constructed and reused | 
| CElement | Specifies the position and type of a subpath | 
| CQPainterPathStroker | Used to generate fillable outlines for a given painter path | 
| CQPaintEvent | Event parameters for paint events | 
| CQPair | Stores a pair of items | 
| CQPalette | Contains color groups for each widget state | 
| CQPanGesture | Describes a panning gesture made by the user | 
| CQParallelAnimationGroup | Parallel group of animations | 
| CQPauseAnimation | Pause for QSequentialAnimationGroup | 
| CQPdfWriter | Generates a PDF which can be used as a paint device | 
| CQPen | Defines how a QPainter should draw lines and outlines of shapes | 
| CQPersistentModelIndex | Used to locate data in a data model | 
| CQPicture | Paint device that records and replays QPainter commands | 
| CQPictureFormatPlugin | Abstract base for custom picture format plugins | 
| CQPictureIO | Parameters for loading and saving pictures | 
| CQPinchGesture | Describes a pinch gesture made by the user | 
| CQPixmap | Off-screen image representation which can be used as a paint device | 
| ►CQPixmapCache | Application-wide cache for pixmaps | 
| CKey | Class can be used for efficient access to the QPixmapCache | 
| CQPlainTextDocumentLayout | Implements a plain text layout for QTextDocument | 
| CQPlainTextEdit | Widget which is used to edit and display plain text | 
| CQPlatformAccessibility | Base class for integrating accessibility backends | 
| CQPlatformBackingStore | Provides the drawing area for top-level windows | 
| CQPlatformClipboard | Provides an abstraction for the system clipboard | 
| CQPlatformCursor | Provides information about pointer device events and the displayed cursor | 
| CQPlatformCursorImage | Provides a set of graphics intended to be used as cursors | 
| CQPlatformDialogHelper | Provides platform-specific customization of dialogs | 
| CQPlatformDrag | Abstraction for drag | 
| CQPlatformFontDatabase | Customize how fonts are discovered and how they are rendered | 
| CQPlatformGraphicsBuffer | Window system abstraction for native graphics buffers | 
| CQPlatformInputContext | Represents the input method dependent data and composing state | 
| CQPlatformIntegration | Entry point for the WindowSystem specific functionality | 
| CQPlatformIntegrationPlugin | Provides access to the gui platform plugin | 
| CQPlatformMenu | Abstract base class for a native menu | 
| CQPlatformMenuBar | Abstract base class for a native menu bar | 
| CQPlatformMenuItem | Abstract base class for a native menu item | 
| CQPlatformMessageDialogHelper | Provides platform-specific customization of message dialogs | 
| CQPlatformNativeInterface | Provides an abstraction for retrieving native resource handles | 
| CQPlatformOffscreenSurface | Additional documentation pending | 
| CQPlatformOpenGLContext | Provides an abstraction for native GL contexts | 
| CQPlatformPixmap | Provides an abstraction for native pixmaps | 
| CQPlatformPrintDevice | Provides access to the print functions on the current platform | 
| CQPlatformPrinterSupport | Provides an abstraction for print support | 
| CQPlatformScreen | Provides an abstraction for visual displays | 
| CQPlatformServices | Provides the backend for desktop related functionality | 
| CQPlatformSessionManager | Provides an interface to the platform session management system | 
| CQPlatformSharedGraphicsCache | Abstraction of a cross-process graphics cache | 
| CQPlatformSurface | Provides an abstraction for a surface | 
| CQPlatformSurfaceEvent | Used to notify about native platform surface events | 
| CQPlatformSystemTrayIcon | Abstracts the system tray icon | 
| CQPlatformTheme | Allows customizing the UI based on themes | 
| CQPlatformThemePlugin | Provides an abstraction for theme plugins | 
| CQPlatformWindow | Provides an abstraction for top level windows | 
| CQPluginLoader | Loads a plugin at runtime | 
| CQPoint | Defines a point in the plane using integer precision | 
| CQPointer | Contains a pointer to a QObject | 
| CQPointF | Defines a point in the plane using floating point precision | 
| CQPolygon | Vector of points using integer precision | 
| CQPolygonF | Vector of points using floating point precision | 
| CQPrintDialog | Dialog for specifying the printer's configuration | 
| CQPrintEngine | Defines an interface for how QPrinter interacts with a given printing subsystem | 
| CQPrinter | Paint device which outputs to a printer | 
| CQPrinterInfo | Gives access to information about existing printers | 
| CQPrintPreviewDialog | Dialog for previewing and configuring page layouts for printer output | 
| CQPrintPreviewWidget | Widget for previewing page layouts for printer output | 
| CQProcess | Used to start external programs and communicate with them | 
| CQProcessEnvironment | Holds the environment variables that can be passed to a program | 
| CQProgressBar | Horizontal or vertical progress bar | 
| CQProgressDialog | Feedback on the progress of a long running operation | 
| CQPropertyAnimation | Animates properties | 
| CQProxyStyle | Simplifies dynamically overriding QStyle elements | 
| CQPushButton | Provides a command button widget | 
| CQQuaternion | Quaternion consisting of a vector and scalar | 
| CQQueue | Template class which provides a queue | 
| CQRadialGradient | Used in combination with QBrush to specify a radial gradient brush | 
| CQRadioButton | Radio button with a text label | 
| CQRadioData | Interfaces to the RDS functionality of the system radio | 
| CQRadioDataControl | Provides access to the RDS functionality of the radio in the QMediaService | 
| CQRadioTuner | Provides an interface to the systems analog radio device | 
| CQRadioTunerControl | Tunes the radio of a QMediaService | 
| CQRasterPaintEngine | Enables hardware acceleration of painting operations on Embedded Linux | 
| CQRasterWindow | A class for painting with QPainter on a QWindow | 
| CQRawFont | Provides access to a single physical instance of a given font | 
| CQReadLocker | Simplifies locking and unlocking read and write locks for read access | 
| CQReadWriteLock | Read and write locking | 
| CQRect | Defines a rectangle in the plane using integer precision | 
| CQRectF | Defines a rectangle in the plane using floating point precision | 
| CQRecursiveMutex | Provides exclusive access to a block of code by different threads | 
| CQRecursiveMutexLocker | Simplifies locking and unlocking mutexes | 
| CQRegion | Clip region for a painter | 
| CQRegularExpression | Provides pattern matching using regular expressions | 
| CQRegularExpressionMatch | Provides the results of matching a QRegularExpression for a given string | 
| CQRegularExpressionValidator | Validates a string based on a regular expression | 
| CQResizeEvent | Event parameters for resize events | 
| CQResource | Interface for reading directly from resources | 
| CQRgba64 | The QRgba64 struct contains a 64-bit RGB color | 
| CQRubberBand | Rectangle or line that can indicate a selection or a boundary | 
| CQRunnable | Base class for all runnable objects | 
| CQSaveFile | Interface for safely writing to files | 
| CQScopedArrayPointer | Contains a pointer to a dynamically allocated array | 
| CQScopedPointer | Contains a pointer to an object and takes exclusive ownership | 
| CQScopedValueRollback | QScopedValueRollback class resets a variable to its previous value on destruction | 
| CQScreen | Used to query screen properties | 
| CQScrollArea | Provides a way to scroll some other widget | 
| CQScrollBar | Vertical or horizontal scroll bar | 
| CQScroller | Enables kinetic scrolling for any scrolling widget or graphics item | 
| CQScrollerProperties | Stores the settings for a QScroller | 
| CQScrollEvent | Sent when scrolling | 
| CQScrollPrepareEvent | Sent in preparation of scrolling | 
| CQSemaphore | General counting semaphore | 
| CQSequentialAnimationGroup | Sequential group of animations | 
| CQSessionManager | Access to the session manager | 
| ►CQSet | Template class which provides a set implemented as a hash | 
| Cconst_iterator | Provides an STL style const iterator for QSet | 
| Citerator | Provides an STL style iterator for QSet | 
| CQSetIterator | Java style const iterator for QSet | 
| CQSettings | Way to save and restore user or application settings | 
| CQSharedArrayPointer | Stores a shared pointer to a dynamically allocated array of objects | 
| CQSharedData | Base class for shared data objects | 
| CQSharedDataPointer | Represents a pointer to an implicitly shared object | 
| CQSharedMemory | Access to a shared memory segment | 
| CQSharedPointer | Stores a pointer to a potentially shared object | 
| CQShortcut | Used to create keyboard shortcuts | 
| CQShortcutEvent | Event which is generated when the user presses a key combination | 
| CQShowEvent | Event that is sent when a widget is shown | 
| CQSignalMapper | Bundles signals from identifiable senders | 
| CQSignalTransition | Transition based on a signal | 
| CQSimpleXmlNodeModel | Provides default implementation for QAbstractXmlNodeModel | 
| CQSize | Defines the size of a two-dimensional object using integer point precision | 
| CQSizeF | Defines the size of a two-dimensional object using floating point precision | 
| CQSizeGrip | Resize top level windows | 
| CQSizePolicy | Layout attribute describing horizontal and vertical resizing policy | 
| CQSlider | Vertical or horizontal slider | 
| CQSocketNotifier | Support for monitoring activity on a file descriptor | 
| CQSortFilterProxyModel | Provides support for sorting and filtering data passed between another model and a view | 
| CQSound | Provides access to the platform audio facilities | 
| CQSoundEffect | Way to play low latency sound effects | 
| CQSourceLocation | Identifies a location in a resource by URI, line, and column | 
| CQSpacerItem | Blank space in a layout | 
| CQSpinBox | Spin box widget | 
| CQSplashScreen | Splash screen that can be shown during application startup | 
| CQSplitter | Implements a splitter widget | 
| CQSplitterHandle | Handle functionality of the splitter | 
| CQSqlDatabase | Connection to a database | 
| CQSqlDriver | Abstract base class for accessing SQL databases | 
| CQSqlDriverCreator | Template class which provides an SQL driver factory for a specific driver type | 
| CQSqlDriverCreatorBase | Base class for SQL driver factories | 
| CQSqlDriverPlugin | Abstract base for custom QSqlDriver plugins | 
| CQSqlError | Provides SQL database error information | 
| CQSqlField | Manipulates the fields in SQL database tables and views | 
| CQSqlIndex | Functions to manipulate and describe database indexes | 
| CQSqlQuery | Means of executing and manipulating SQL statements | 
| CQSqlQueryModel | Read-only data model for SQL result sets | 
| CQSqlRecord | Encapsulates a database record | 
| CQSqlRelation | Stores information about an SQL foreign key | 
| CQSqlRelationalDelegate | Delegate used to display and edit data from a QSqlRelationalTableModel | 
| CQSqlRelationalTableModel | Provides an editable data model for a single database table, with foreign key support | 
| CQSqlResult | Abstract interface for accessing data from SQL databases | 
| CQSqlTableModel | Provides an editable data model for a single database table | 
| CQSslCertificate | Convenient API for an X509 certificate | 
| CQSslCertificateExtension | API for accessing the extensions of an X509 certificate | 
| CQSslCipher | SSL cryptographic cipher | 
| CQSslConfiguration | Holds the configuration and state of an SSL connection | 
| CQSslEllipticCurve | Represents an elliptic curve for use by elliptic-curve cipher algorithms | 
| CQSslError | Provides an SSL error | 
| CQSslKey | Interface for private and public keys | 
| CQSslPreSharedKeyAuthenticator | Authentication data for pre shared keys (PSK) ciphersuites | 
| CQSslSocket | QSslSocket class provides an SSL encrypted socket for both clients and servers | 
| CQStack | Template class which provides a stack | 
| CQStackedLayout | Stack of widgets where only one widget is visible at a time | 
| CQStackedWidget | Stack of widgets where only one widget is visible at a time | 
| CQStandardItem | Used to create an item which is then passed to a QStandardItemModel | 
| CQStandardItemEditorCreator | Provides the possibility to register widgets without having to subclass QItemEditorCreatorBase | 
| CQStandardItemModel | Used to store data as defined by the software model/view paradigm | 
| CQStandardPaths | QStandardPaths class provides methods for accessing standard paths | 
| CQState | General-purpose state for QStateMachine | 
| ►CQStateMachine | QStateMachine class provides a hierarchical finite state machine | 
| CSignalEvent | Signal event | 
| CWrappedEvent | Inherits QEvent and holds a clone of an event associated with a QObject | 
| CQStaticText | Enables optimized drawing of text when the text and its layout is updated rarely | 
| CQStatusBar | Horizontal area for presenting status information | 
| CQStatusTipEvent | Event that is used to show messages in a status bar | 
| CQString | Typedef for QString8 | 
| ►CQString16 | Provides a UTF-16 string class | 
| Cconst_iterator | STL style const iterator for QString16 | 
| Citerator | STL style iterator for QString16 | 
| ►CQString8 | Provides a UTF-8 string class | 
| Cconst_iterator | STL style const iterator for QString8 | 
| Citerator | STL style iterator for QString8 | 
| CQStringList | Provides a container which is optimized for strings | 
| CQStringListModel | Implements a model where the data is a list of strings | 
| CQStringParser | Provides functionality for parsing a string | 
| CQStringView | String view class | 
| CQStyle | Abstract base class that encapsulates the look and feel of a GUI | 
| CQStyledItemDelegate | Display and editing facilities for data items from a model | 
| CQStyleFactory | Creates QStyle objects | 
| CQStyleHintReturn | Style hints which return more than basic data types | 
| CQStyleHintReturnMask | Style hints that return a QRegion | 
| CQStyleHintReturnVariant | Style hints that return a QVariant | 
| CQStyleHints | Platform specific hints and settings | 
| CQStyleOption | Stores the parameters used by methods in QStyle | 
| CQStyleOptionButton | Described the parameters for drawing buttons | 
| CQStyleOptionComboBox | Used to describe the parameter for drawing a combobox | 
| CQStyleOptionComplex | Holds parameters which are common to all complex controls | 
| CQStyleOptionDockWidget | Used to describe the parameters for drawing a dock widget | 
| CQStyleOptionFocusRect | Contains parameters used when drawing a focus rectangle with QStyle | 
| CQStyleOptionFrame | Describes the parameters for drawing a frame | 
| CQStyleOptionGraphicsItem | Stores parameters used to draw a QGraphicsItem | 
| CQStyleOptionGroupBox | Describes the parameters for drawing a group box | 
| CQStyleOptionHeader | Stores parameters for drawing a header | 
| CQStyleOptionMenuItem | Used when drawing a menu item | 
| CQStyleOptionProgressBar | Describes the parameters used for drawing a progress bar | 
| CQStyleOptionRubberBand | Used to describe the parameters needed for drawing a rubber band | 
| CQStyleOptionSizeGrip | Contains parameters used for drawing a size grip | 
| CQStyleOptionSlider | Parameters used for drawing a slider | 
| CQStyleOptionSpinBox | Used to describe the parameters necessary for drawing a spin box | 
| CQStyleOptionTab | Describe the parameters for drawing a tab bar | 
| CQStyleOptionTabBarBase | Base version, describes the base region of a tab bar | 
| CQStyleOptionTabWidgetFrame | Describes the parameters for drawing the frame around a tab widget | 
| CQStyleOptionTitleBar | Parameters for drawing a title bar | 
| CQStyleOptionToolBar | Used to describe the parameters for drawing a toolbar | 
| CQStyleOptionToolBox | Describes the parameters used to draw a tool box | 
| CQStyleOptionToolButton | Used to describe the parameters for drawing a tool button | 
| CQStyleOptionViewItem | Base version, describes the parameters used to draw an item in a view widget | 
| CQStylePainter | Used for drawing QStyle elements inside a widget | 
| CQStylePlugin | Abstract base for custom QStyle plugins | 
| CQSupportedWritingSystems | Used when registering fonts with the internal fontdatabase | 
| CQSurface | Abstraction of renderable surfaces | 
| CQSurfaceFormat | Represents the format of a QSurface | 
| CQSvgGenerator | Paint device that is used to create SVG drawings | 
| CQSvgRenderer | Used to draw the contents of SVG files onto paint devices | 
| CQSvgWidget | Widget that is used to display the contents of Scalable Vector Graphics (SVG) files | 
| CQSwipeGesture | Describes a swipe gesture made by the user | 
| CQSyntaxHighlighter | QSyntaxHighlighter class provides a mechanism for defining highlighting rules | 
| CQSysInfo | QSysInfo provides information about the computer where the application is running | 
| CQSystemSemaphore | General counting system semaphore | 
| CQSystemTrayIcon | Icon for an application in the system tray | 
| CQt | Namespace containing symbols, data types, and identifiers | 
| CQTabBar | Tab bar used in tabbed dialogs | 
| CQTabletEvent | Parameters that describe a Tablet event | 
| CQTableView | Default model/view implementation of a table view | 
| CQTableWidget | Item-based table view with a default model | 
| CQTableWidgetItem | Item for use with the QTableWidget class | 
| CQTableWidgetSelectionRange | Way to interact with selection in a model without using model indexes and a selection model | 
| CQTabWidget | Stack of tabbed widgets | 
| CQTapAndHoldGesture | Describes a tap-and-hold (aka LongTap) gesture made by the user | 
| CQTapGesture | Describes a tap gesture made by the user | 
| CQtConcurrentMap | Header providing Concurrent Map and MapReduce | 
| CQtConcurrentRun | A header which supports running functions in separate threads | 
| CQTcpServer | Provides a TCP-based server | 
| CQTcpSocket | TCP socket | 
| CQTemporaryDir | Creates a unique directory for temporary use | 
| CQTemporaryFile | I/O device which operates on temporary files | 
| ►CQTextBlock | Container for text fragments in a QTextDocument | 
| Citerator | The QTextBlock::iterator class provides an iterator for reading the contents of a QTextBlock | 
| CQTextBlockFormat | Formatting information for blocks of text in a QTextDocument | 
| CQTextBlockGroup | Container for text blocks within a QTextDocument | 
| CQTextBlockUserData | Used to associate custom data with blocks of text | 
| CQTextBoundaryFinder | Provides a way of finding Unicode text boundaries in a string | 
| CQTextBrowser | Rich text browser with hypertext navigation | 
| CQTextCharFormat | Formatting information for characters in a QTextDocument | 
| ►CQTextCodec | Converts between text encodings and QString | 
| CConverterState | Stores the current state of the Unicode parser | 
| CQTextCodecPlugin | Abstract base for custom QTextCodec plugins | 
| CQTextCursor | Offers an API to access and modify QTextDocuments | 
| CQTextDecoder | State-based decoder | 
| CQTextDocument | Holds formatted text that can be viewed and edited using a QTextEdit | 
| CQTextDocumentFragment | Piece of formatted text from a QTextDocument | 
| CQTextDocumentWriter | Provides a format-independent interface for writing a QTextDocument to files or other devices | 
| ►CQTextEdit | Widget that is used to edit and display both plain and rich text | 
| CExtraSelection | The QTextEdit::ExtraSelection structure provides a way of specifying a character format for a given selection in a document | 
| CQTextEncoder | State-based encoder | 
| CQTextFormat | Formatting information for a QTextDocument | 
| CQTextFragment | Holds a piece of text in a QTextDocument with a single QTextCharFormat | 
| ►CQTextFrame | Frame in a QTextDocument | 
| Citerator | The QTextFrame::iterator class provides an iterator for reading the contents of a QTextFrame | 
| CQTextFrameFormat | Formatting information for frames in a QTextDocument | 
| CQTextImageFormat | Formatting information for images in a QTextDocument | 
| CQTextInlineObject | Represents an inline object in a QTextLayout | 
| CQTextItem | All the information required to draw text in a custom paint engine | 
| ►CQTextLayout | Used to lay out and render text | 
| CFormatRange | This structure is used to apply extra formatting information | 
| CQTextLength | Encapsulates the different types of length used in a QTextDocument | 
| CQTextLine | Line of text inside a QTextLayout | 
| CQTextList | Decorated list of items in a QTextDocument | 
| CQTextListFormat | Formatting information for lists in a QTextDocument | 
| CQTextObject | Base class for different kinds of objects that can group parts of a QTextDocument together | 
| CQTextObjectInterface | Allows drawing of custom text objects in QTextDocuments | 
| ►CQTextOption | Description of general rich text properties | 
| CTab | Structure which represents a tab stop | 
| CQTextStream | Interface for reading and writing text | 
| CQTextTable | Table in a QTextDocument | 
| CQTextTableCell | Properties of a cell in a QTextTable | 
| CQTextTableCellFormat | Formatting information for table cells in a QTextDocument | 
| CQTextTableFormat | Formatting information for tables in a QTextDocument | 
| CQThread | Platform independent way to manage threads | 
| CQThreadPool | Manages a collection of QThreads | 
| CQThreadStorage | Per-thread data storage | 
| CQTileRules | Holds the rules used to draw a pixmap or image split into segments | 
| CQTime | Stores time information | 
| CQTimeEdit | Provides a widget for editing times based on the QDateTimeEdit widget | 
| CQTimeLine | Timeline for controlling animations | 
| CQTimer | Provides repetitive and single-shot timers | 
| CQTimerEvent | Parameters that describe a timer event | 
| ►CQTimeZone | Converts a QDateTime between UTC and local time for a given time zone | 
| COffsetData | Stores time zone offset data for a transition | 
| CQToolBar | Provides a movable panel that contains a set of controls | 
| CQToolBox | Column of tabbed widget items | 
| CQToolButton | Quick-access button to commands or options, usually used inside a QToolBar | 
| CQToolTip | Tool tips (balloon help) for any widget | 
| CQTouchDevice | Describes the device from which touch events originate | 
| ►CQTouchEvent | Contains parameters that describe a touch event | 
| CTouchPoint | Information about a touch point in a QTouchEvent | 
| CQTransform | Specifies 2D transformations of a coordinate system | 
| CQTranslator | Internationalization support for text output | 
| CQTreeView | Model/view implementation of a tree view | 
| CQTreeWidget | Tree view that uses a predefined tree model | 
| CQTreeWidgetItem | Provides an item used with the QTreeWidget class | 
| CQTreeWidgetItemIterator | Way to iterate over the items in a QTreeWidget instance | 
| CQUdpSocket | UDP socket | 
| CQUndoCommand | Base class of all commands stored on a QUndoStack | 
| CQUndoGroup | Group of QUndoStack objects | 
| CQUndoStack | A stack of QUndoCommand objects | 
| CQUndoView | Displays the contents of a QUndoStack | 
| CQUniqueArrayPointer | Typedef for QScopedArrayPointer | 
| CQUniquePointer | Typedef for QScopedPointer | 
| CQUrl | Interface for working with URL syntax | 
| CQUrlInfo | Stores information about URLs | 
| CQUrlQuery | Provides a way to manipulate key-value pairs in a URL's query | 
| CQUuid | Stores a Universally Unique Identifier (UUID) | 
| CQValidator | Validation of input text | 
| CQVariant | Stores a single value of almost any data type | 
| CQVariantAnimation | Provides an abstract base class for animations | 
| CQVarLengthArray | Low level variable length array | 
| CQVBoxLayout | Lines up widgets vertically | 
| ►CQVector | Template class which provides a dynamic or resizable array | 
| Cconst_iterator | The QVector::const_iterator class provides an STL style const iterator for QVector and QStack | 
| Citerator | The QVector::iterator class provides an STL style iterator for QVector and QStack | 
| CQVector2D | Vector or vertex in 2D space | 
| CQVector3D | Vector or vertex in 3D space | 
| CQVector4D | Represents a point or vector in 4D space | 
| CQVectorIterator | Java style const iterator for QVector and QStack | 
| CQVersionNumber | Contains a version number with an arbitrary number of segments | 
| CQVideoDeviceSelectorControl | Provides a video device selector media control | 
| CQVideoEncoderSettings | Set of video encoder settings | 
| CQVideoEncoderSettingsControl | Provides access to the settings of a media service that performs video encoding | 
| CQVideoFilterRunnable | Represents the implementation of a video filter | 
| CQVideoFrame | Representation of a frame of video data | 
| CQVideoProbe | Allows monitoring of video frames being played or recorded | 
| CQVideoRendererControl | Renders video to a QAbstractVideoSurface | 
| CQVideoSurfaceFormat | Stream format of a video presentation surface | 
| CQVideoWidget | Provides a widget which presents video produced by a media object | 
| CQVideoWidgetControl | Media control which implements a video widget | 
| CQVideoWindowControl | Media control for rendering video to a window | 
| CQVulkanDeviceFunctions | Provides cross platform access to the device level core Vulkan API | 
| CQVulkanExtensionProperties | Represents information about a Vulkan extension properties | 
| CQVulkanFunctions | Provides cross platform access to the instance level core Vulkan API | 
| CQVulkanInstance | Provides functionality to create a Vulkan instance | 
| CQVulkanLayerProperties | Represents information about a Vulkan layer | 
| CQVulkanWindow | Subclass of QWindow to perform Vulkan rendering | 
| CQVulkanWindowRenderer | Implements the application specific rendering logic for a QVulkanWindow | 
| CQWaitCondition | Condition variable for synchronizing threads | 
| CQWeakPointer | Stores a weak pointer to a potentially shared object | 
| CQWebDatabase | Access to HTML 5 databases created with JavaScript | 
| CQWebElement | Convenient access to DOM elements in a QWebFrame | 
| ►CQWebElementCollection | Collection of web elements | 
| Cconst_iterator | Provides an STL-style const iterator for QWebElementCollection | 
| Citerator | The QWebElementCollection::iterator class provides an STL-style iterator for QWebElementCollection | 
| CQWebFrame | Frame in a web page | 
| CQWebHistory | History of a QWebPage | 
| CQWebHistoryInterface | Interface to implement link history | 
| CQWebHistoryItem | One item in the history of a QWebPage | 
| CQWebHitTestResult | Information about the web page content after a hit test | 
| CQWebInspector | Allows the placement and control of a QWebPage's inspector | 
| ►CQWebPage | Object to view and edit web documents | 
| CChooseMultipleFilesExtensionOption | Describes the option for the multiple files selection extension | 
| CChooseMultipleFilesExtensionReturn | Holds the return value for the multiple files selection extension | 
| CErrorPageExtensionOption | Describes the option for the error page extension | 
| CErrorPageExtensionReturn | Defines the page which will be shown in a frame where an error occurred | 
| CExtensionOption | An extended input argument to QWebPage's extension support | 
| CExtensionReturn | Provides an output result from a QWebPage's extension | 
| CViewportAttributes | Describes hints that can be applied to a viewport | 
| ►CQWebPluginFactory | Used to embed custom data types in web pages | 
| CMimeType | The QWebPluginFactory::MimeType structure describes a mime type supported by a plugin | 
| CPlugin | This structure describes the properties of a plugin a QWebPluginFactory can create | 
| CQWebSecurityOrigin | Defines a security boundary for web sites | 
| CQWebSettings | Object to store the settings used by QWebPage and QWebFrame | 
| CQWebView | Widget that is used to view and edit web documents | 
| CQWhatsThis | Used to provide a simple help description of a widget | 
| CQWhatsThisClickedEvent | Event that can be used to handle hyperlinks in a "What's This?" text | 
| CQWheelEvent | Parameters that describe a wheel event | 
| CQWidget | Base class for all user interface controls | 
| CQWidgetAction | Used to add custom widgets for classes like a QToolbar which support actions | 
| CQWidgetItem | Layout item that represents a widget | 
| CQWindow | Represents a window in the underlying windowing system | 
| CQWindowsStyle | Microsoft Windows-like look and feel | 
| CQWindowStateChangeEvent | Window state before a window state change | 
| CQWindowsVistaStyle | Provides a look and feel suitable for applications on Microsoft Windows Vista | 
| CQWindowsXPStyle | Microsoft Windows XP-like look and feel | 
| CQWinEventNotifier | Provides support for the Windows wait functions | 
| CQWizard | Provides support for wizards | 
| CQWizardPage | Base class for wizard pages | 
| CQWriteLocker | Simplifies locking and unlocking read and write locks for write access | 
| CQXmlAttributes | XML attributes | 
| CQXmlContentHandler | Interface to report the logical content of XML data | 
| CQXmlDeclHandler | Interface to report declaration content of XML data | 
| CQXmlDefaultHandler | Default implementation of all the XML handler classes | 
| CQXmlDTDHandler | Interface to report DTD content of XML data | 
| CQXmlEntityResolver | Interface to resolve external entities contained in XML data | 
| CQXmlErrorHandler | Interface to report errors in XML data | 
| CQXmlFormatter | Implementation of QXmlSerializer for transforming XQuery output into formatted XML | 
| CQXmlInputSource | Input data for the QXmlReader subclasses | 
| CQXmlItem | Either an XML node or an atomic value | 
| CQXmlLexicalHandler | Interface to report the lexical content of XML data | 
| CQXmlLocator | XML handler classes with information about the parsing position within a file | 
| CQXmlName | Name of an XML node, in an efficient, namespace-aware way | 
| CQXmlNamePool | Table of shared strings referenced by instances of QXmlName | 
| CQXmlNamespaceSupport | Helper class for XML readers which want to include namespace support | 
| CQXmlNodeModelIndex | Identifies a node in an XML node model subclassed from QAbstractXmlNodeModel | 
| CQXmlParseException | Used to report errors with the QXmlErrorHandler interface | 
| CQXmlQuery | Performs XQueries on XML data, or on non-XML data modeled to look like XML | 
| CQXmlReader | Interface for XML readers | 
| CQXmlResultItems | Iterates through the results of evaluating an XQuery in QXmlQuery | 
| CQXmlSchema | Loading and validation of a W3C XML Schema | 
| CQXmlSchemaValidator | Validates XML instance documents against a W3C XML Schema | 
| CQXmlSerializer | An implementation of QAbstractXmlReceiver for transforming XQuery output into unformatted XML | 
| CQXmlSimpleReader | Implementation of a simple XML parser | 
| CQXmlStreamAttribute | Represents a single XML attribute | 
| CQXmlStreamAttributes | Vector of QXmlStreamAttribute | 
| CQXmlStreamEntityDeclaration | DTD entity declaration | 
| CQXmlStreamEntityResolver | Entity resolver for a QXmlStreamReader | 
| CQXmlStreamNamespaceDeclaration | Namespace declaration | 
| CQXmlStreamNotationDeclaration | DTD notation declaration | 
| CQXmlStreamReader | Fast parser for reading well formed XML via a simple streaming API | 
| CQXmlStreamWriter | XML writer with a simple streaming API |