| KAboutApplication | Standard "About Application" dialog box.
 | 
| KAboutContainer | 
  KAboutContainer can be used to make a application specific AboutDialog. | 
| KAboutDialog | 
 A KDialogBase with predefined main widget. | 
| KAboutKDE | Standard "About KDE" dialog box,. | 
| KAboutWidget | 
 KAboutWidget is the main widget for KAboutDialog. | 
| KAccelMenu | 
 Simplify the use of KAccel and KKeyDialog with menus. | 
| KAction | Class to encapsulate user-driven action or event. | 
| KActionCollection |  | 
| KActionMenu |  | 
| KActionSeparator |  | 
| KAlphaPainter | Methods to easily draw/blend images with an alpha channel.
 | 
| KAnimWidget | Widget animated using individual icons. | 
| KAuthIcon | ABC for authorization icon widgets. | 
| KBugReport | A dialog box for sending bug reports.
 | 
| KButtonBox | 
 Container widget for buttons. | 
| KCModule | 
 The base class for control center modules. | 
| KCharSelect | Character-Selection Widget. | 
| KCharSelectTable | Character-Selection Table. | 
| KColor |  | 
| KColorButton | A pushbutton to display or allow user selection of a colour.
 | 
| KColorCells | 
 A table of editable colour cells. | 
| KColorCombo | 
 Combobox for colours. | 
| KColorDialog | A color selection dialog.
 | 
| KColorDrag | 
 Drag (XDnD) objects of type application/x-color. | 
| KColorPatch | A color shower.
  | 
| KComboBox | An enhanced combo box.
 | 
| KCommand | 
 The abstract base class for all Commands. | 
| KCommandHistory | 
 The command history stores a (user) configurable amount of
 Commands. | 
| KCompletionBox | A helper widget for "completion-widgets" (KLineEdit, KComboBox)). | 
| KContainerLayout | 
 Alternative Layout manager widget. | 
| KContextMenuManager | Convenience class to mangage context menus. | 
| KCursor | A QCursor wrapper allowing "themed" cursors and auto-hiding cursors.
 | 
| KDCOPActionProxy | A proxy class publishing a DCOP interface for actions.
  | 
| KDatePicker | A date selection widget.
 | 
| KDateValidator | 
 Validates user-entered dates. | 
| KDialog | 
 Dialog with extended modeless support and methods for KDE standard
 compliance. | 
| KDialogBase | A dialog base class which standard buttons and predefined layouts.
 | 
| KDialogBase::SButton |  | 
| KDockMainWindow | 
 A special kind of KMainWindow that is able to have dockwidget child widgets (and member of the dockwidget class set). | 
| KDockManager | 
 The manager that knows all dockwidgets and handles the dock process (and member of the dockwidget class set). | 
| KDockManager::MenuDockData | 
 A data structure containing data about every dockwidget that is under control. | 
| KDockTabBar | 
 The actual tab bar for dockwidgets  (and member of the dockwidget class set). | 
| KDockTabBarPainter | 
 The draw helper for the KDockTabBar (and member of the dockwidget class set). | 
| KDockTabCtl | 
 A manager for a single KDockTabBar  (and member of the dockwidget class set). | 
| KDockTabCtl_PrivateStruct | 
 Actually an internal struct. | 
| KDockTabGroup | 
 It just hides the special implementation of a dockwidget tab groups (and is member of the dockwidget class set). | 
| KDockWidget | 
 Floatable widget that can be dragged around with the mouse and
 encapsulate the actual widgets (and member of the dockwidget class
 set). | 
| KDockWidgetAbstractHeader | 
 An abstract base clase for all dockwidget headers (and member of the dockwidget class set). | 
| KDockWidgetAbstractHeaderDrag | 
 An abstract class for all dockwidget drag-panels of a dockwidgets (and member of the dockwidget class set). | 
| KDockWidgetHeader | 
 The header (additional bar) for a KDockWidget s (and member of the dockwidget class set). | 
| KDockWidgetHeaderDrag | 
 This special widget is the panel one can grip with the mouses (and member of the dockwidget class set). | 
| KDockWidgetPrivate | 
 additional KDockWidget stuff (private)
 | 
| KDockWindow |  | 
| KDoubleNumInput | An input control for real numbers, consisting of a spinbox and a slider.
  | 
| KDualColorButton | A widget for selecting two related colors.
 | 
| KEdFind |  | 
| KEdGotoLine |  | 
| KEdReplace |  | 
| KEdit | 
 A simple text editor for the KDE project. | 
| KEditListBox | 
 An editable listbox
 | 
| KEditToolbar | A dialog used to customize or configure toolbars.
 | 
| KEditToolbarWidget | A widget used to customize or configure toolbars. | 
| KFloatValidator | 
  QValidator for floating point entry. | 
| KFontAction |  | 
| KFontChooser | A font selection widget.
 | 
| KFontDialog | A font selection dialog.
 | 
| KFontSizeAction |  | 
| KGradientSelector | 
 The KGradientSelector widget allows the user to choose
 from a one-dimensional range of colors which is given as a
 gradient between two colors provided by the programmer. | 
| KHSSelector | 
 Widget for Hue/Saturation selection. | 
| KHelpMenu | Standard KDE help menu with dialog boxes.
 | 
| KHistoryCombo | A combobox for offering a history and completion. | 
| KIconView | A variant of QIconView that honors KDE's system-wide settings.
 | 
| KImageEffect | 
 This class includes various QImage based graphical effects. | 
| KIntNumInput | An input widget for integer numbers, consisting of a spinbox and a slider.
 | 
| KIntSpinBox | A spin box widget for non-decimal numbers.
  | 
| KIntValidator | 
  QValidator for integers. | 
| KJanusWidget | Easy to use widget with many layouts. | 
| KJanusWidget::IconListBox |  | 
| KKeyChooser | Widget for configuration of KAccel and KGlobalAccel.
 | 
| KKeyDialog | Dialog for configuration of KAccel and KGlobalAccel.
 | 
| KLed | An LED widget.
 | 
| KLineEdit | An enhanced single line input widget.
 | 
| KLineEditDlg | 
 Dialog for user to enter a single line of text. | 
| KListAction |  | 
| KListBox | A variant of QListBox that honors KDE's system-wide settings.
 | 
| KListView | 
 This Widget extends the functionality of QListView to honor the system
 wide settings for Single Click/Double Click mode, AutoSelection and
 ChangeCursorOverLink (TM). | 
| KMacroCommand | 
 A Macro Command is a command that holds several sub-commands. | 
| KMainWindow | KDE top level main window. | 
| KMenuBar | 
 KDE Style-able menubar. | 
| KMessageBox |  
 Easy message dialog box. | 
| KNumInput | 
 You need to inherit from this class if you want to implement K*NumInput
 for a different variable type
 | 
| KPaletteTable | 
 A color palette in table form. | 
| KPanelApplet | KDE Panel Applet class. | 
| KPanelExtension | KDE Panel Extension class. | 
| KPanelMenu | 
 DCop client menu class for the Kicker panel that will insert a submenu into
 the KDE menu. | 
| KPasswordDialog | A password input dialog.
 | 
| KPasswordEdit | A safe password input widget.
 | 
| KPixmapEffect | 
 This class includes various pixmap-based graphical effects. | 
| KPixmapIO | Fast QImage to/from QPixmap conversion.
 | 
| KPopupFrame | 
 Frame with popup menu behaviour. | 
| KPopupMenu | A menu with title items.
 | 
| KPopupTitle | KPopupMenu title widget.
  | 
| KProgress | A progress indicator widget.
 | 
| KPushButton | A QPushButton with drag-support. | 
| KRadioAction | 
 An action that operates like a radio button. | 
| KRecentFilesAction | Recent files action. | 
| KRestrictedLine | A line editor for restricted character sets.
 | 
| KRootPermsIcon | 
 Icon to show whether or not a user has root permissions. | 
| KRootPixmap | 
 Create pseudo-transparent widgets. | 
| KRuler | A ruler widget.
 | 
| KSelectAction | Action for selecting one of several items. | 
| KSelector | 
 KSelector is the base class for other widgets which
 provides the ability to choose from a one-dimensional
 range of values. | 
| KSeparator | 
 Standard horizontal or vertical separator. | 
| KSharedPixmap | 
 Shared pixmap client. | 
| KSqueezedTextLabel | A replacement for QLabel that squeezes its text. | 
| KStatusBar | KDE statusbar widget. | 
| KStdAction | 
 Convenience methods to access all standard KDE actions. | 
| KSystemTray | KDE System Tray Window class. | 
| KTMainWindow | KDE top level main window. (deprecated) | 
| KTabButton | KTabButton. | 
| KTabCtl |  
 Tabbed dialog with extended features. | 
| KTextBrowser | Extended QTextBrowser.
 | 
| KThemeBase | 
 This is a base class for KDE themed styles. | 
| KThemeCache | 
 A very simple pixmap cache for theme plugins. | 
| KThemePixmap | 
 This class adds simple time management to KPixmap for use in flushing
 KThemeCache. | 
| KThemeStyle | 
 KDE themed styles. | 
| KToggleAction | Checkbox like action.
  | 
| KToolBar | Floatable toolbar with auto resize.
 | 
| KToolBarPopupAction | 
 This action is a normal action everywhere, except in a toolbar
 where it also has a delayed popupmenu. | 
| KToolBarRadioGroup | Class for group of radio butons in toolbar.
   | 
| KToolBarSeparator |  | 
| KURLLabel | A drop-in replacement for QLabel that displays hyperlinks.
 | 
| KValueSelector | 
 Dialog for colour value selection. | 
| KWindowListMenu |  | 
| KWizard | 
 General-purpose multi-page dialog. | 
| KWritePermsIcon |  
 Auth icon for write permission display. | 
| KXMLGUIClient |  | 
| KXMLGUIFactory | 
 KXMLGUIFactory, together with KXMLGUIClient objects, can be used to create
 a GUI of container widgets (like menus, toolbars, etc. | 
| KXYSelector | 
 KXYSelector is the base class for other widgets which
 provides the ability to choose from a two-dimensional
 range of values. | 
| QXEmbed |  |