|Message: Re: Getting UserDetectorConstruction Instance||Not Logged In (login)|
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On Fri, 03 Dec 2010 04:54:40 GMT, Gumplinger Peter wrote:
> Hi Mike > > > G4RunManager *runManager = G4RunManager::GetRunManager(); const > > G4VUserDetectorConstruction* myDet = > > runManager->GetUserDetectorConstruction(); > > > > But this does not return my object since some of the methods in my > > Detectorconstruction object were not defined. > > try this: > > const MyDetectorConstruction* myDet = > > (const MyDetectorConstruction*) > (G4RunManager::GetRunManager()->GetUserDetectorConstruction()); > > or put after your code: > > const MyDetectorConstruction* myDetector = dynamic_cast<const > MyDetectorConstruction *>(myDet); > > and now use the pointer to your derived class - myDetector; e.g. your > myDet is a pointer to the base class and hence can only invoke base > class methods. Indeed, a C++ question. > > Peter >
Another possible way is shown in examples/novice/N03 : pass the pointer of MyDetectorConstruction to MyPrimaryGeneratorAction via its constructor.
Here is the code in exampleN03.cc :
// Set mandatory initialization classes // DetectorConstruction* detector = new DetectorConstruction; runManager->SetUserInitialization(detector);
// Set user action classes // PrimaryGeneratorAction* gen_action = new PrimaryGeneratorAction(detector); runManager->SetUserAction(gen_action);
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