Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 123]

▼NKDDockWidgets
CConfig	Singleton to allow to choose certain behaviours of the framework
CDefaultWidgetFactory	The FrameworkWidgetFactory that's used if none is specified
CDockWidget	Represents a dock widget
CDockWidgetBase	The DockWidget base-class. DockWidget and DockWidgetBase are only split in two so we can share some code with the QtQuick implementation, which also derives from DockWidgetBase
CFrameworkWidgetFactory	A factory class for allowing the user to customize some internal widgets. This is optional, and if not provided, a default one will be used, DefaultWidgetFactory
CLayoutGuestWidget
▼CLayoutSaver
CDockWidget
CFloatingWindow
CFrame
CLayout
CMainWindow
CMultiSplitter
CPlaceholder
CPosition
CScalingInfo	Info about how a main window is scaled. Used for RestoreOption_RelativeToMainWindow
CScreenInfo	We serialize some info about screens, so eventually we can make restore smarter when switching screens Not used currently, but nice to have in the json already
CMainWindow	The QMainwindow sub-class that the application should use to be able to dock KDDockWidget::DockWidget instances
CMainWindowBase	The MainWindow base-class. MainWindow and MainWindowBase are only split in two so we can share some code with the QtQuick implementation, which also derives from MainWindowBase