| Wt::EventSignal< E > | UI event Signal/Slot signal |
| Wt::InvalidDateException | Exception thrown when an invalid WDate is constructed |
| Wt::JSignal< A1, A2, A3, A4, A5, A6 > | A signal to relay JavaScript to C++ calls |
| Wt::JSlot | JSlot implements a slot that is only implemented in client side JavaScript code |
| Wt::Signal< A1, A2, A3, A4, A5, A6 > | Signal/Slot signal |
| Wt::WAbstractToggleButton | Abstract base class for Radio button and Check boxes |
| Wt::WAnchor | A WWidget that represents an HTML anchor |
| Wt::WApplication | A class that represents an instance of a Wt Application, corresponding to a single session |
| Wt::WApplication::UpdateLock | Synchronisation lock for manipulating and updating the application and its widgets |
| Wt::WBorder | Style class for a WWidget border |
| Wt::WBreak | WBreak provides a line break between inline widgets |
| Wt::WButtonGroup | Class for grouping radio buttons logically together |
| Wt::WCalendar | A calendar |
| Wt::WCheckBox | A user control that represents a check box |
| Wt::WColor | Style class for a color |
| Wt::WComboBox | Provides a drop-down combo-box control |
| Wt::WCompositeWidget | WCompositeWidget is the base class for composite widgets |
| Wt::WContainerWidget | A WWidget that may hold (and manage) children |
| Wt::WCssDecorationStyle | Style class that groups all decorative style aspects of a WWidget or a style sheet rule |
| Wt::WCssStyleSheet | A CSS style sheet |
| Wt::WDate | A gregorian calendar date (year/month/day) |
| Wt::WDatePicker | A date picker |
| Wt::WDateValidator | A validator for dates |
| Wt::WDialog | A WDialog emulates a modal window |
| Wt::WDoubleValidator | A WDoubleValidator is used to validate floating point user input |
| Wt::WDropEvent | Drop event details |
| Wt::WEnvironment | The WEnvironment class captures information on the application environment |
| Wt::WFileResource | A Resource which streams data from a local file |
| Wt::WFileUpload | A widget that allows a file to be uploaded |
| Wt::WFont | Style class describing a font |
| Wt::WFormWidget | A WWidget that correspond to an HTML form element |
| Wt::WGroupBox | Group widgets into a frame with a title |
| Wt::WIconPair | A pair of icons, which show one at a time, and represents a binary state. |
| Wt::WImage | WImage shows an image |
| Wt::WInPlaceEdit | WInPlaceEdit provides an in-place-editable text |
| Wt::WInteractWidget | A WWidget that can receive user-interface interaction |
| Wt::WIntValidator | A validator that validates integer user input |
| Wt::WKeyEvent | Keyboard event details |
| Wt::WLabel | WLabel acts as a label for a WFormWidget |
| Wt::WLength | Class specifying a length with a unit |
| Wt::WLineEdit | WLineEdit Provides a single line edit |
| Wt::WMemoryResource | A Resource which streams data from memory |
| Wt::WMenu | The Menu widget offers a menu of options, which correspond to several tabs in a WStackedWidget |
| Wt::WMenuItem | A WMenuItem represents one item in a WMenu |
| Wt::WMessageBox | WMessageBox provides simple dialog windows |
| Wt::WMessageResourceBundle | The message-resource-bundle of a WApplication manages its localazible messages |
| Wt::WMouseEvent | Mouse event details |
| Wt::WMouseEvent::Coordinates | Coordinates of the mouse |
| Wt::WObject | This class is the base class of all Wt objects and widgets |
| Wt::WPushButton | WPushButton represents a push button |
| Wt::WRadioButton | A user control that represents a radio button |
| Wt::WRegExpValidator | A WRegExpValidator is used to validate user input against a regular expression |
| Wt::WResource | An object which can be rendered in the HTTP protocol |
| Wt::WScrollArea | A Widget that adds scrolling capabilities to its content |
| Wt::WScrollBar | A scrollbar attached to a WScrollArea |
| Wt::WSelectionBox | A selection box provides the same functionality as combo box but presents the options in a list that is always visible |
| Wt::WSignalMapper< T > | Utility class to connect multiple senders to a single slot by associating additional information with each sender |
| Wt::WStackedWidget | A container widget that stacks its widgets on top of each other |
| Wt::WStaticModelView< ViewRenderer > | WStaticModelView implements a view for a non-changing model |
| Wt::WString | Wt unicode String class, with support for localization |
| Wt::WSuggestionPopup | A widget which popups to assist in editing a textarea or lineedit |
| Wt::WSuggestionPopup::Options | Struct for configuration of a matcher and replacer JavaScript function |
| Wt::WTable | WTable manages children in a table |
| Wt::WTableCell | A WContainerWidget that represents a Table cell |
| Wt::WText | A Widget that displays text |
| Wt::WTextArea | WTextArea provides a multi-line edit |
| Wt::WTimer | The WTimer class provides timer signals and single-shot timers |
| Wt::WTreeNode | A single node in a tree list |
| Wt::WTreeTable | A table, with a tree list in the first column |
| Wt::WTreeTableNode | WTreeTableNode is a specialization of WTreeNode which allows additional data to be associated with each node |
| Wt::WValidationStatus | A widget that keeps track of the validation of a WFormWidget |
| Wt::WValidator | A WValidator is used to validate user input according to pre-defined rules |
| Wt::WViewWidget | WViewWidget is the abstract base class for an MVC pattern where the View is rendered using a WWidget |
| Wt::WVirtualImage | WVirtualImage is an abstract class intended to show a viewport to a virtually large or even infinite image |
| Wt::WWebWidget | WWebWidget is the base class for widgets directly provided by HTML |
| Wt::WWidget | A WWidget is the abstract base class for any Wt widget |
