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

[detail level 12]

G4EmLivermorePhysics
QweakSimEmLivermorePhysics
G4EmStandardPhysics
QweakSimEmStandardPhysics
G4MagneticField
QweakSimMagneticField
G4SteppingVerbose
QweakSimSteppingVerbose	N/A
G4Trap
QweakSimTrap
G4UImessenger
DetectorMessenger
EventActionMessenger
HistoMessenger
QweakSimAnalysisMessenger
QweakSimBeamLineMessenger	Placeholder for a long explaination
QweakSimCerenkovDetectorMessenger	Scans the input file for /Cerenkov/xyz commands
QweakSimCollimatorMessenger
QweakSimDetectorMessenger	Scans the input file for /QweakSim/xyz commands
QweakSimEPEventMessenger	UI control for the event generator
QweakSimEventActionMessenger	Messenger for filling//storing the hit event structure at the end of an event
QweakSimGEMMessenger	Scans the input file for /GEM/xyz commands
QweakSimGeometryMessenger	Scans the input file for /GDML/ commands
QweakSimHDCMessenger	Scans the input file for /HDC/xyz commands
QweakSimLeadGlassMessenger
QweakSimLumiMessenger
QweakSimMagneticFieldMessenger	Scans input file for /MagnetField/xyz commands
QweakSimPionWallMessenger
QweakSimPMTOnlyMessenger
QweakSimPrimaryGeneratorActionMessenger	Scans the input file for ..
QweakSimShieldingWallMessenger	Scans the input file for /ShieldingWall/xyz commands
QweakSimTargetMessenger	Scans the input file for /Target/xyz commands
QweakSimTrackingActionMessenger	Scans the input file for /TrackingAction/xyz commands
QweakSimTriggerScintillatorMessenger	Scans the input file for /Scintillator/xyz commands
QweakSimVDCMessenger	Scans the input file for /VDC/xyz commands
QweakSimWShuttersMessenger
G4UserEventAction
EventAction
QweakSimEventAction	Mainly filling/storing the hit event structure at the end of an event
G4UserRunAction
QweakSimRunAction	Defines actions at the beginning and the end of run
RunAction
G4UserStackingAction
QweakSimStackingAction
G4UserSteppingAction
QweakSimSteppingAction
G4UserTrackingAction
QweakSimTrackingAction	Adds additional information to primary/secondary track before track starts stepping
G4VHit
QweakSimCerenkov_DetectorHit	Handling of a hit in the Cerenkov detector
QweakSimCerenkov_PMTHit
QweakSimCerenkov_RadiatorHit	Handling of a hit in the Cerenkov radiator
QweakSimGEM_WirePlaneHit	Handling of a Readoutplane Hit of the GEM detector (I know there is no wire plane ... just for consistent class names )
QweakSimHDC_WirePlaneHit	Handles hits of the HDC wire planes
QweakSimLeadGlass_DetectorHit
QweakSimLeadGlass_PMTHit
QweakSimLumi_DetectorHit
QweakSimPMTOnly_DetectorHit
QweakSimPMTOnly_PMTHit
QweakSimTarget_DetectorHit
QweakSimTriggerScintillator_DetectorHit
QweakSimTriggerScintillator_PMTHit	Handling of a Photomultiplier Hit of the Trigger Scintillator detector
QweakSimTungstenPlug_DetectorHit
QweakSimVDC_DriftCellHit	Region 3 Vertical Drift Chamber Drift Cell Hit
QweakSimVDC_WirePlaneHit	Handling of a U-WirePlane and/or V-WirePlane Hit of the VDC
G4VMscModel
QweakSimUrbanMscModel
QweakSimWentzelVIModel
G4VPVParameterisation
QweakSim_HitPlaneParameterisation
QweakSimMagnet_CoilParameterisation	Parametrization of MainMagnet Coil orientation/setup
QweakSimVDC_DriftCellParameterisation	Parameterisation of the VDC Drift Cell locations
G4VSensitiveDetector
QweakSimCerenkov_DetectorSD	Storing hit information of the Cerenkov detector
QweakSimCerenkov_PMTSD
QweakSimCerenkov_RadiatorSD	Storing hit information of the Cerenkov radiator
QweakSimGEM_WirePlaneSD	Checks for a valid GEM ReadoutPlane hit and stores the hit information (I know there is no wire plane ... just for consistent class names )
QweakSimHDC_WirePlaneSD	Checks for a valid HDC WirePlane hit and stores the hit information (Up to now I only activated only 1 out of 6 sensitive wireplanes per HDC)
QweakSimLeadGlass_DetectorSD
QweakSimLeadGlass_PMTSD
QweakSimLumi_DetectorSD
QweakSimPMTOnly_DetectorSD
QweakSimPMTOnly_PMTSD
QweakSimTarget_DetectorSD
QweakSimTriggerScintillator_DetectorSD	Storing hit information of the Trigger Scintillator detector
QweakSimTriggerScintillator_PMTSD	Storing photomultiplier hit information of the Trigger Scintillator detector
QweakSimTungstenPlug_DetectorSD
QweakSimVDC_DriftCellBackSD	Checks for a valid VDC U-DriftCell and/or V-DriftCell hit and stores the hit information
QweakSimVDC_DriftCellFrontSD	Checks for a valid VDC U-DriftCell and/or V-DriftCell hit and stores the hit information
QweakSimVDC_WirePlaneSD	Checks for a valid VDC U-WirePlane and/or V-Wireplane hit and stores the hit information
G4VTrajectory
QweakSimTrajectory	Stores the information about the various tracks
G4VUserDetectorConstruction
DetectorConstruction
QweakSimDetectorConstruction	Main class of QweakSim. All experiment components are are placed here
G4VUserPrimaryGeneratorAction
PrimaryGeneratorAction
QweakSimPrimaryGeneratorAction	Deal with primary particle generation and inject it in the detector
G4VUserTrackInformation
QweakSimTrackInformation	Class with additional track information like Q2
Histo
HistoManager
QweakSimAnalysis	Handling of the output ROOT file
QweakSimBeamLine	Definition of the BeamLine
QweakSimCerenkovDetector
QweakSimCollimator	Definition of the Collimators
QweakSimCollimatorSupport	Definition of the Support/Shielding of the Collimators
QweakSimColorDefinitions
QweakSimEPEvent
QweakSimFieldMap< value_t, value_n >	A multi-dimensional grid of values with interpolation methods
QweakSimGEM	Region 1 GEM (Gas Electron Multiplier)
QweakSimGeometry	Main class of QweakSim. All passive elements are are read from the GDML files
QweakSimHDC	Region 2 Horizontal Drift Chamber
QweakSimLeadGlass
QweakSimLumiDetector
QweakSimMainMagnet	Main Magnet solids like coils and support, no field
QweakSimMaterial	Definition of elements and materials
QweakSimPionWall
QweakSimPMTOnly
QweakSimShieldingWall	Defines the Shielding Wall with trapezoid cut outs (located after Main Magnet and before Region 3 VDCs)
QweakSimTarget	Definition of the Target
QweakSimTrackHistory
QweakSimTriggerScintillator	Definition of the Trigger Scintillator detector
QweakSimTungstenPlug
QweakSimUserInformation
QweakSimVDC	Region 3 Vertical Drift Chamber
QweakSimVDCRotator	Definition of the Support/Shielding of the Collimators
QweakSimVisManager	N/A
QweakSimWShutters
TObject
QweakSimUserCerenkov_DetectorEvent	ROOT Subtree structure for Cerenkov DetectorEvent
QweakSimUserCerenkov_MainEvent	ROOT Subtree structure for Cerenkov main event
QweakSimUserCerenkov_PMTEvent	ROOT Subtree structure for Cerenkov PMTEvent
QweakSimUserCerenkov_RadiatorEvent	ROOT Subtree structure for Cerenkov radiator event
QweakSimUserGEM_MainEvent	ROOT Subtree structure for GEM MainEvent
QweakSimUserGEM_SingleGEMEvent	ROOT Subtree structure for SingleGEMEvent
QweakSimUserGEM_WirePlaneEvent	ROOT Subtree structure for GEM WirePlaneEvent
QweakSimUserHDC_MainEvent	ROOT Subtree structure for HDC MainEvent
QweakSimUserHDC_SingleHDCEvent	ROOT Subtree structure for HDC SingleHDCEvent
QweakSimUserHDC_WirePlaneEvent	ROOT Subtree structure for HDC WirePlaneEvent
QweakSimUserLeadGlass_DetectorEvent
QweakSimUserLeadGlass_MainEvent
QweakSimUserLeadGlass_PMTEvent
QweakSimUserLumi_DetectorEvent
QweakSimUserLumi_MainEvent
QweakSimUserMainEvent	Defines Top ROOT Tree structure of the ROOT file for each event
QweakSimUserPMTOnly_DetectorEvent
QweakSimUserPMTOnly_MainEvent
QweakSimUserPMTOnly_PMTEvent
QweakSimUserPrimaryEvent	Stores the PrimaryEvent information into the ROOT file for each event
QweakSimUserRunInformation
QweakSimUserTarget_DetectorEvent
QweakSimUserTarget_MainEvent
QweakSimUserTriggerScintillator_DetectorEvent	ROOT Subtree structure for Trigger Scintillator DetectorEvent
QweakSimUserTriggerScintillator_MainEvent	ROOT Subtree structure for Trigger Scintillator MainEvent
QweakSimUserTriggerScintillator_PMTEvent	ROOT Subtree structure for Trigger Scintillator PMTEvent
QweakSimUserTungstenPlug_DetectorEvent
QweakSimUserTungstenPlug_MainEvent
QweakSimUserVDC_Config	ROOT Subtree structure for HDC geometry
QweakSimUserVDC_DriftCellEvent	ROOT Subtree structure for VDC DriftCellEvent
QweakSimUserVDC_MainEvent	ROOT Subtree structure for HDC MainEvent
QweakSimUserVDC_SingleVDCEvent	ROOT Subtree structure for VDC SingleVDCEvent
QweakSimUserVDC_WirePlaneEvent	ROOT Subtree structure for VDC WirePlaneEvent
TRint
QweakSimRint	A ROOT command line interface