path: root/doc/html/whatsthis

2D area that can contain QCanvasItem objects. | QCanvas
2D transformations of a coordinate system. | QWMatrix
Abstract base class for accessing SQL databases. | QSqlDriver
Abstract base class for custom menu items in popup menus. | QCustomMenuItem
Abstract base class for implementations of additional COM interfaces. | QAxAggregated
Abstract base class of internal layout iterators. | QGLayoutIterator
Abstract base for Qt/Embedded graphics driver plugins. | QGfxDriverPlugin
Abstract base for Qt/Embedded keyboard driver plugins. | QKbdDriverPlugin
Abstract base for Qt/Embedded mouse driver plugins. | QMouseDriverPlugin
Abstract base for custom QSqlDriver plugins. | QSqlDriverPlugin
Abstract base for custom QStyle plugins. | QStylePlugin
Abstract base for custom QTextCodec plugins. | QTextCodecPlugin
Abstract base for custom QWidget plugins. | QWidgetPlugin
Abstract base for custom image format plugins. | QImageFormatPlugin
Abstract base for fixed-size grids. | QGridView
Abstract class that provides an API to initalize and access a COM object. | QAxBase
Abstract graphic object on a QCanvas. | QCanvasItem
Abstract interface for accessing data from SQL databases. | QSqlResult
Abstract item that a QLayout manipulates. | QLayoutItem
Abstract user interface action that can appear both in menus and tool bars. | QAction
Abstraction for date and edit editors. | QDateTimeEditBase
Abstraction of Unicode text and the classic C '\0'-terminated char array. | QString
Abstraction of objects which provide formatted data of a certain MIME type. | QMimeSource
Abstraction of the classic C zero-terminated char array (char *). | QCString
Abstraction used by QImageDecoder. | QImageConsumer
Access serialization between threads. | QMutex
Access to a selected area in a QTable. | QTableSelection
Access to directory structures and their contents in a platform-independent way. | QDir
Access to screen information on multi-head systems. | QDesktopWidget
Access to the platform audio facilities. | QSound
Access to the session manager. | QSessionManager
Access to the window system clipboard. | QClipboard
Acts like a union for the most common Qt data types. | QVariant
Allows the appearance of the Qt/Embedded Window Manager to be customized. | QWSDecoration
Allows waiting/waking for conditions between threads. | QWaitCondition
And its descendants manage the framebuffer and palette. | QScreen
Animated canvas item on a QCanvas. | QCanvasSprite
Application-global cache for pixmaps. | QPixmapCache
Area with movable labelled icons. | QIconView
Array of QCanvasPixmaps. | QCanvasPixmapArray
Array of bits. | QBitArray
Array of bytes. | QByteArray
Array of points. | QPointArray
Asynchronous DNS lookups. | QDns
Base class for QMenuBar and QPopupMenu. | QMenuData
Base class for implementing QTextEdit syntax highlighters. | QSyntaxHighlighter
Basic functions for reading and writing text using a QIODevice. | QTextStream
Blank space in a layout. | QSpacerItem
Bridge between application objects and script code. | QAxScriptManager
Browsing and editing of SQL tables and views. | QSqlCursor
Browsing of general SQL SELECT statements. | QSqlSelectCursor
Buffered TCP connection. | QSocket
Bundles signals from identifiable senders. | QSignalMapper
CDE look and feel. | QCDEStyle
Can be used to send signals for classes that don't inherit QObject. | QSignal
Checkable list view items. | QCheckListItem
Checkbox with a text label. | QCheckBox
Checkboxes in QTables. | QCheckTableItem
Clip region for a painter. | QRegion
Clock time functions. | QTime
Collection of nodes that can be accessed by name. | QDomNamedNodeMap
Collection of styles for rich text rendering and a generator of tags. | QStyleSheet
Collects tool tips into related groups. | QToolTipGroup
Color groups for each widget state. | QPalette
Colors based on RGB or HSV values. | QColor
Column of tabbed widget items. | QToolBox
Combined button and popup list. | QComboBox
Combines a QDateEdit and QTimeEdit widget into a single widget for editing datetimes. | QDateTimeEdit
Command button. | QPushButton
Common API for network protocols. | QNetworkProtocol
Common operations for network protocols. | QNetworkOperation
Common operations on URLs. | QUrlOperator
Communication capabilities between several clients. | QCopChannel
Const iterator for QValueList. | QValueListConstIterator
Convenience class for input streams. | QTextIStream
Convenience class for output streams. | QTextOStream
Conversion between text encodings. | QTextCodec
Conversion to and from EUC-JP character sets. | QEucJpCodec
Conversion to and from EUC-KR character sets. | QEucKrCodec
Conversion to and from JIS character sets. | QJisCodec
Conversion to and from Shift-JIS. | QSjisCodec
Conversion to and from the Big5 encoding. | QBig5Codec
Conversion to and from the Big5-HKSCS encoding. | QBig5hkscsCodec
Conversion to and from the Chinese GB18030/GBK/GB2312 encoding. | QGb18030Codec
Conversion to and from the Chinese GB2312 encoding. | QGb2312Codec
Conversion to and from the Chinese GBK encoding. | QGbkCodec
Conversion to and from the Tamil TSCII encoding. | QTsciiCodec
Conversion to and from visually ordered Hebrew. | QHebrewCodec
Converts between numbers and their string representations in various languages. | QLocale
Corner-grip for resizing a top-level window. | QSizeGrip
Creates QScreen objects for Qt/Embedded. | QGfxDriverFactory
Creates QStyle objects. | QStyleFactory
Creates QWSKeyboardHandler objects for Qt/Embedded. | QKbdDriverFactory
Creates QWSMouseHandler objects for Qt/Embedded. | QMouseDriverFactory
Creates and manages data entry forms tied to SQL databases. | QSqlForm
Creates well-compressed PNG animations. | QPNGImagePacker
Data manipulation and navigation for data entry forms. | QDataBrowser
Date and time functions. | QDateTime
Date editor. | QDateEdit
Date functions. | QDate
Default implementation of all the XML handler classes. | QXmlDefaultHandler
Defines a Universally Unique Identifier (UUID). | QUuid
Defines a factory for the creation of COM components. | QAxFactory
Defines a point in the plane. | QPoint
Defines a rectangle in the plane. | QRect
Defines an interface that exposes information about accessible objects. | QAccessibleInterface
Defines how a QPainter should draw lines and outlines of shapes. | QPen
Defines the fill pattern of shapes drawn by a QPainter. | QBrush
Defines the size of a two-dimensional object. | QSize
Describes a key event. | QKeyEvent
Dialog widget for selecting a font. | QFontDialog
Dialog widget for specifying colors. | QColorDialog
Dialogs that allow users to select files or directories. | QFileDialog
Direct access to the video hardware. | QDirectPainter
Displays a number with LCD-like digits. | QLCDNumber
Does low-level painting e.g. on widgets. | QPainter
Doubly-linked list of char*. | QStrList
Doubly-linked list of char* with case-insensitive comparison. | QStrIList
Drag and drop object for transferring colors. | QColorDrag
Drag and drop object for transferring images. | QImageDrag
Drag and drop object for transferring plain and Unicode text. | QTextDrag
Drag object for a list of URI references. | QUriDrag
Ellipse or ellipse segment on a QCanvas. | QCanvasEllipse
Encapsulates MIME-based data transfer. | QDragObject
Encapsulates a database record, i.e. a set of database fields. | QSqlRecord
Encapsulates a drag item. | QIconDragItem
Encapsulates a key sequence as used by accelerators. | QKeySequence
Encapsulates a set of database field meta data. | QSqlRecordInfo
Encapsulates an OpenGL rendering context. | QGLContext
Encapsulates the common Look and Feel of a GUI. | QCommonStyle
Encapsulation of a set of text styles. | QStyleSheetItem
Enums and static functions relating to accessibility. | QAccessible
Error message display dialog. | QErrorMessage
Event parameters for child object events. | QChildEvent
Event parameters for move events. | QMoveEvent
Event parameters for paint events. | QPaintEvent
Event parameters for resize events. | QResizeEvent
Event parameters for widget focus events. | QFocusEvent
Event which is sent after a widget is hidden. | QHideEvent
Event which is sent to the widget when a drag and drop first drags onto the widget. | QDragEnterEvent
Event which is sent to the widget when a drag and drop leaves the widget. | QDragLeaveEvent
Event which is sent when a drag and drop is completed. | QDropEvent
Event which is sent when a widget is shown. | QShowEvent
Event which is sent while a drag and drop is in progress. | QDragMoveEvent
Extensible provider of mime-typed data. | QMimeSourceFactory
Factory that makes QImageFormat objects. | QImageFormatType
Feedback on the progress of a slow operation. | QProgressDialog
File previewing in QFileDialog. | QFilePreview
Flexible SQL table widget that supports browsing and editing. | QDataTable
Flexible editable table widget. | QTable
Font metrics information. | QFontMetrics
Font used for drawing text. | QFont
For the dynamic creation of widgets from Qt Designer .ui files. | QWidgetFactory
Framework for wizard dialogs. | QWizard
Functions to manipulate and describe QSqlCursor and QSqlDatabase indexes. | QSqlIndex
General information about fonts. | QFontInfo
Group box frame with a title. | QGroupBox
Group of widget colors. | QColorGroup
Groups actions together. | QActionGroup
Handles keyboard accelerator and shortcut keys. | QAccel
Hardware-independent pixmap representation with direct access to the pixel data. | QImage
Header information for HTTP. | QHttpHeader
Header row or column, e.g. for tables and listviews. | QHeader
Helper class for QString. | QCharRef
Helper class for XML readers which want to include namespace support. | QXmlNamespaceSupport
Horizontal bar suitable for presenting status information. | QStatusBar
Horizontal geometry management for its child widgets. | QHBox
Horizontal menu bar. | QMenuBar
Horizontal progress bar. | QProgressBar
I/O device that operates on a QByteArray. | QBuffer
I/O device that operates on files. | QFile
IP address. | QHostAddress
Icons for QFileDialog to use. | QFileIconProvider
Implementation of a QNetworkProtocol that works on the local file system. | QLocalFs
Implementation of a simple XML reader (parser). | QXmlSimpleReader
Implementation of the FTP protocol. | QFtp
Implementation of the HTTP protocol. | QHttp
Implements a list view item. | QListViewItem
Implements a list/tree view. | QListView
Implements a splitter widget. | QSplitter
Implements an Appearance Manager style. | QMacStyle
Implements font management in Qt/Embedded. | QFontManager
Implements parts of the QAccessibleInterface for QObjects. | QAccessibleObject
Implements the keyboard driver for Qt/Embedded. | QWSKeyboardHandler
Incremental image decoder for a specific image format. | QImageFormat
Incremental image decoder for all supported image formats. | QImageDecoder
Incremental loading of animations or images, signalling as it progresses. | QMovie
Information about a paint device. | QPaintDeviceMetrics
Information about the features of the DOM implementation. | QDomImplementation
Information about the fonts available in the underlying window system. | QFontDatabase
Integer value within a range. | QRangeControl
Interface between a QWidget and an ActiveX client. | QAxBindable
Interface for XML readers (i.e. parsers). | QXmlReader
Interface to report DTD content of XML data. | QXmlDTDHandler
Interface to report declaration content of XML data. | QXmlDeclHandler
Interface to report errors in XML data. | QXmlErrorHandler
Interface to report the lexical content of XML data. | QXmlLexicalHandler
Interface to report the logical content of XML data. | QXmlContentHandler
Interface to resolve external entities contained in XML data. | QXmlEntityResolver
Internal class, used with QBitArray. | QBitVal
International input methods for Qt/Embedded. | QWSInputMethod
Internationalization support for text output. | QTranslator
Iterator for QAsciiCache collections. | QAsciiCacheIterator
Iterator for QAsciiDict collections. | QAsciiDictIterator
Iterator for QCache collections. | QCacheIterator
Iterator for QDict collections. | QDictIterator
Iterator for QIntCache collections. | QIntCacheIterator
Iterator for QIntDict collections. | QIntDictIterator
Iterator for QMap. | QMapConstIterator
Iterator for QMap. | QMapIterator
Iterator for QObjectLists. | QObjectListIterator
Iterator for QPtrDict collections. | QPtrDictIterator
Iterator for QPtrList collections. | QPtrListIterator
Iterator for QValueList. | QValueListIterator
Iterator for collections of QListViewItems. | QListViewItemIterator
Iterator for the QStrList and QStrIList classes. | QStrListIterator
Iterators over QLayoutItem. | QLayoutIterator
Layout attribute describing horizontal and vertical resizing policy. | QSizePolicy
Layout item that represents a widget. | QWidgetItem
Lays out widgets in a grid. | QGridLayout
Lightweight Unicode character. | QChar
Line on a QCanvas. | QCanvasLine
Lines up child widgets horizontally or vertically. | QBoxLayout
Lines up widgets horizontally. | QHBoxLayout
Lines up widgets vertically. | QVBoxLayout
List box items that display text. | QListBoxText
List box items with a pixmap and optional text. | QListBoxPixmap
List of QCanvasItems. | QCanvasItemList
List of QDomNode objects. | QDomNodeList
List of selectable, read-only items. | QListBox
List of strings. | QStringList
Mac/Platinum look and feel. | QPlatinumStyle
Main application window, with a menu bar, dock windows (e.g. for toolbars), and a status bar. | QMainWindow
Maintains the list of widgets in the focus chain. | QFocusData
Manages and lays out QDockWindows. | QDockArea
Manages the GUI application's control flow and main settings. | QApplication
Manages the event queue. | QEventLoop
Manipulates the fields in SQL database tables and views. | QSqlField
Maps open-standard MIME to Mac flavors. | QMacMime
Maps open-standard MIME to Window Clipboard formats. | QWindowsMime
Means of executing and manipulating SQL statements. | QSqlQuery
Means of using Qt Assistant as an application's help tool. | QAssistantClient
Means of using comboboxes in QTables. | QComboTableItem
Meta information about Qt objects. | QMetaObject
Microsoft Windows-like look and feel. | QWindowsStyle
Modal dialog with a short message, an icon, and some buttons. | QMessageBox
Monochrome (1-bit depth) pixmaps. | QBitmap
More sophisticated Motif-ish look and feel. | QMotifPlusStyle
Motif look and feel. | QMotifStyle
Mouse cursor with an arbitrary shape. | QCursor
Mouse driver for Qt/Embedded. | QWSMouseHandler
Movable panel containing widgets such as tool buttons. | QToolBar
Multi-bezier splines on a QCanvas. | QCanvasSpline
Namespace for Qt SQL identifiers that need to be global-like. | QSql
Namespace for miscellaneous identifiers in the Qt OpenGL module. | QGL
Namespace for miscellaneous identifiers that need to be global-like. | Qt
Off-screen, pixel-based paint device. | QPixmap
On-screen view of a QCanvas. | QCanvasView
One-line text editor. | QLineEdit
Optional parameters for QStyle functions. | QStyleOption
Organizes QButton widgets in a group. | QButtonGroup
Organizes QButton widgets in a group with one horizontal row. | QHButtonGroup
Organizes QButton widgets in a vertical column. | QVButtonGroup
Organizes a group of widgets in a vertical column. | QVGroupBox
Organizes widgets in a group with one horizontal row. | QHGroupBox
Paint device that paints on a printer. | QPrinter
Paint device that records and replays QPainter commands. | QPicture
Parameters for input method events. | QIMEvent
Parameters for loading and saving images. | QImageIO
Parameters that describe a Tablet event. | QTabletEvent
Parameters that describe a close event. | QCloseEvent
Parameters that describe a context menu event. | QContextMenuEvent
Parameters that describe a mouse event. | QMouseEvent
Parameters that describe a timer event. | QTimerEvent
Parameters that describe a wheel event. | QWheelEvent
Pattern matching using regular expressions. | QRegExp
Per-thread data storage. | QThreadStorage
Persistent platform-independent application settings. | QSettings
Pixmaps for QCanvasSprites. | QCanvasPixmap
Platform-independent low-level socket API. | QSocketDevice
Platform-independent threads. | QThread
Polygon on a QCanvas. | QCanvasPolygon
Polygonal canvas item on a QCanvas. | QCanvasPolygonalItem
Popup menu widget. | QPopupMenu
Powerful single-page rich text editor. | QTextEdit
QObject that is a web browser plugin. | QNPInstance
QObject that wraps a COM object. | QAxObject
QPtrList of QObjects. | QObjectList
QWidget that is a web browser plugin window. | QNPWidget
QWidget that wraps an ActiveX control. | QAxWidget
Quick-access button to commands or options, usually used inside a QToolBar. | QToolButton
Radio button with a text or pixmap label. | QRadioButton
Range checking of floating-point numbers. | QDoubleValidator
Read-only SQL forms. | QDataView
Rectangle on a QCanvas. | QCanvasRectangle
Represents a generic string in the DOM. | QDomCharacterData
Represents an XML CDATA section. | QDomCDATASection
Represents an XML comment. | QDomComment
Represents an XML document. | QDomDocument
Represents an XML entity. | QDomEntity
Represents an XML entity reference. | QDomEntityReference
Represents an XML notation. | QDomNotation
Represents an XML processing instruction. | QDomProcessingInstruction
Represents one attribute of a QDomElement. | QDomAttr
Represents one element in the DOM tree. | QDomElement
Represents text data in the parsed XML document. | QDomText
Request header information for HTTP. | QHttpRequestHeader
Response header information for HTTP. | QHttpResponseHeader
Rich text browser with hypertext navigation. | QTextBrowser
Robust integer semaphore. | QSemaphore
Rounded range control (like a speedometer or potentiometer). | QDial
SGI/Irix look and feel. | QSGIStyle
SQL database error information. | QSqlError
Scrolling area with on-demand scroll bars. | QScrollView
Serialization of binary data to a QIODevice. | QDataStream
Server-specific functionality in Qt/Embedded. | QWSServer
Server-specific functionality in Qt/Embedded. | QWSWindow
Set of icons with different styles and sizes. | QIconSet
Signals that a main icon drag has begun. | QIconDragEvent
Simple convenience dialog to get a single value from the user. | QInputDialog
Simple description of any widget, i.e. answering the question "What's this?". | QWhatsThis
Simple geometry management of its children. | QGrid
Simple stored-value drag object for arbitrary MIME data. | QStoredDrag
Simplifies locking and unlocking QMutexes. | QMutexLocker
Single item in a QIconView. | QIconViewItem
Small displayable piece of rich text. | QSimpleRichText
Spin box widget (spin button). | QSpinBox
Splash screen that can be shown during application startup. | QSplashScreen
Stack of tabbed widgets. | QTabDialog
Stack of tabbed widgets. | QTabWidget
Stack of widgets of which only the top widget is user-visible. | QWidgetStack
State-based decoder. | QTextDecoder
State-based encoder. | QTextEncoder
Stores information about URLs. | QUrlInfo
Stores meta data about a property. | QMetaProperty
Stores meta data associated with a SQL field. | QSqlFieldInfo
Stream of data provided to a QNPInstance by the browser. | QNPStream
String objects using constant Unicode data. | QConstString
Support for custom events. | QCustomEvent
Support for socket callbacks. | QSocketNotifier
Supports drag and drop operations within a QIconView. | QIconDrag
System-independent file information. | QFileInfo
TCP-based server. | QServerSocket
Tab bar, e.g. for use in tabbed dialogs. | QTabBar
Template class that provides a cache based on QString keys. | QCache
Template class that provides a cache based on char* keys. | QAsciiCache
Template class that provides a cache based on long keys. | QIntCache
Template class that provides a dictionary based on QString keys. | QDict
Template class that provides a dictionary based on char* keys. | QAsciiDict
Template class that provides a dictionary based on long keys. | QIntDict
Template class that provides a dictionary based on void* keys. | QPtrDict
Template class that provides a list. | QPtrList
Template class that provides a queue. | QPtrQueue
Template class that provides a stack. | QPtrStack
Template class that provides arrays of simple types. | QMemArray
Template class that provides guarded pointers to QObjects. | QGuardedPtr
Template class which ensures that implicitly shared and explicitly shared classes reference unique data. | QDeepCopy
Template collection class that provides a vector (array). | QPtrVector
Text object on a QCanvas. | QCanvasText
Text or image display. | QLabel
The QDialog API for Motif-based dialogs. | QMotifDialog
The QWidget API for Xt/Motif widgets. | QMotifWidget
The XML handler classes with information about the parsing position within a file. | QXmlLocator
The abstract base class of button widgets, providing functionality common to buttons. | QButton
The base class for all the nodes in a DOM tree. | QDomNode
The base class of I/O devices. | QIODevice
The base class of all Qt objects. | QObject
The base class of all event classes. Event objects contain event parameters. | QEvent
The base class of all list box items. | QListBoxItem
The base class of all user interface objects. | QWidget
The base class of dialog windows. | QDialog
The base class of geometry managers. | QLayout
The base class of most pointer-based Qt collections. | QPtrCollection
The base class of objects that can be painted. | QPaintDevice
The base class of widgets that can have a frame. | QFrame
The basis of the Motif Extension. | QMotif
The cell content for QTable cells. | QTableItem
The display format of an OpenGL rendering context. | QGLFormat
The input data for the QXmlReader subclasses. | QXmlInputSource
The look and feel of a GUI. | QStyle
The main factory for plugin objects. | QNPlugin
The representation of the DTD in the document tree. | QDomDocumentType
The structures in a QTabBar. | QTab
Time editor. | QTimeEdit
Timer signals and single-shot timers. | QTimer
Tool tips (balloon help) for any widget or rectangular part of a widget. | QToolTip
Translator message and its properties. | QTranslatorMessage
Tree of QDomNodes which is not usually a complete QDomDocument. | QDomDocumentFragment
URL parser and simplifies working with URLs. | QUrl
Used for installing custom colormaps into QGLWidgets. | QGLColormap
Used to check a string against a regular expression. | QRegExpValidator
Used to create SQL database connections and to provide transaction handling. | QSqlDatabase
Used to create editor widgets for QVariant data types. | QEditorFactory
Used to create pixmaps for a QIconSet. | QIconFactory
Used to create the editors used by QDataTable and QSqlForm. | QSqlEditorFactory
Used to map widgets to SQL fields. | QSqlPropertyMap
Used to report errors with the QXmlErrorHandler interface. | QXmlParseException
Used to start external programs and to communicate with them. | QProcess
Validation of input text. | QValidator
Validator which ensures that a string contains a valid integer within a specified range. | QIntValidator
Value-based template class that provides a dictionary. | QMap
Value-based template class that provides a dynamic array. | QValueVector
Value-based template class that provides a pair of elements. | QPair
Value-based template class that provides a stack. | QValueStack
Value-based template class that provides lists. | QValueList
Vertical geometry management of its child widgets. | QVBox
Vertical or horizontal scroll bar. | QScrollBar
Vertical or horizontal slider. | QSlider
Watches the lifetime of multiple QObjects. | QObjectCleanupHandler
Widget for rendering OpenGL graphics. | QGLWidget
Widget which can be docked inside a QDockArea or floated as a top level window on the desktop. | QDockWindow
Workspace window that can contain decorated windows, e.g. for MDI. | QWorkspace
Wrapper around a script engine. | QAxScriptEngine
Wrapper around script code. | QAxScript
Wrapper for handling shared libraries. | QLibrary
XML attributes. | QXmlAttributes