This inheritance list is sorted roughly, but not completely, alphabetically:

[detail level 12]

QApplication
ReceptacleApp
QDialog
AboutDialog
QLabel
LabelFor
QMainWindow
SelectLauncher
QObject
ClientConnection
HostController
LogEmitter
SignalCounter	Simplified version of QSignalSpy
UtilRunner
UtilWorker
QPlainTextEdit
LogText
QRunnable
UtilRunner
QTcpServer
Dispatcher
QWidget
JobSelectionForm
UtilCollection
UtilInterface