Geant4 User's Guide for Application Developers - Geant4 - CERN

Communication and Controldelete listCmd;delete particleCmd;delete directionCmd;delete energyCmd;delete positionCmd;delete timeCmd;delete gunDirectory;}void G4ParticleGunMessenger::SetNewValue(G4UIcommand * command,G4String newValues){if( command==listCmd ){ particleTable->dumpTable(); }else if( command==particleCmd ){G4ParticleDefinition* pd = particleTable->findParticle(newValues);if(pd != NULL){ fParticleGun->SetParticleDefinition( pd ); }}else if( command==directionCmd ){ fParticleGun->SetParticleMomentumDirection(directionCmd->GetNew3VectorValue(newValues)); }else if( command==energyCmd ){ fParticleGun->SetParticleEnergy(energyCmd->GetNewDoubleValue(newValues)); }else if( command==positionCmd ){ fParticleGun->SetParticlePosition(directionCmd->GetNew3VectorValue(newValues)); }else if( command==timeCmd ){ fParticleGun->SetParticleTime(timeCmd->GetNewDoubleValue(newValues)); }}G4String G4ParticleGunMessenger::GetCurrentValue(G4UIcommand * command){G4String cv;if( command==directionCmd ){ cv = directionCmd->ConvertToString(fParticleGun->GetParticleMomentumDirection()); }else if( command==energyCmd ){ cv = energyCmd->ConvertToString(fParticleGun->GetParticleEnergy(),"GeV"); }else if( command==positionCmd ){ cv = positionCmd->ConvertToString(fParticleGun->GetParticlePosition(),"cm"); }else if( command==timeCmd ){ cv = timeCmd->ConvertToString(fParticleGun->GetParticleTime(),"ns"); }else if( command==particleCmd ){ // update candidate listG4String candidateList;G4int nPtcl = particleTable->entries();for(G4int i=0;iGetParticleName(i);candidateList += " ";}particleCmd->SetCandidates(candidateList);}return cv;}7.2.4. How to control the output of G4cout/G4cerrInstead of cout and cerr, Geant4 uses G4cout and G4cerr. Output streams from G4cout/G4cerr are handled byG4UImanager which allows the application programmer to control the flow of the stream. Output strings maytherefore be displayed on another window or stored in a file. This is accomplished as follows:1. Derive a class from G4UIsession and implement the two methods:G4int ReceiveG4cout(G4String coutString);G4int ReceiveG4cerr(G4String cerrString);212