Dear developpers, I would like to ask you the following problem of EOF detection. Consider that I have managed to create a Tree with branch created via the "Post a Tlist in a Folder" mechanism. Then, in a session where I am reading this Tree from a file I have made the following sequences 1 & 2: 1) once for all: ------------ //Get the Tree of the MC hits m_treeMCH = dynamic_cast<TTree*>(m_fileIn->Get("TreeMCH")); ..... m_branchMCH = m_treeMCH->FindBranch(".topFold.RunMC.EventMC.Hits.MCHitList"); ..... m_branchMCH->SetAddress(&m_mcHitList); where m_mcHitList is a TList 2) each event: ---------- //Get list of hits from the Root Tree m_mcHitList->Delete(); //Nb: eventId is managed by the main application int nbytes = m_branchMCH->GetEntry(eventId); cout << " #of bytes read: " << nbytes << endl; //loop on Hit TIter nextin(m_mcHitList); DMMCHit* aDMHit; while ( (aDMHit = (DMMCHit *)nextin()) ) { .... } It works perfectly, but I do not know how to get a feedback from the GetEntry statement if it return 0 bytes, if really there is no hits stored in m_mcHitList or if I am at the end of the file. Regards, J.E Campagne ............................................................................. .LAL - IN2P3 - CNRS .LAL - B.P 34 - 91898 Orsay Cedex - France .Piece 108 .Tel +33 (0)1 64 46 84 29 .Fax +33 (0)1 64 46 83 97 ...........................................................................
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