HI , how can I get access from within a macro function to a TTree which was loaded interactively from an hbook converted file? root[21] Int_t BGOList[3] = {1,2,3}; root[22] f1 = new TFile("MyFile.root"); root[23] .L GainHV.C; root [24] f1.ls(); TFile** bt416_05_eve.root TFile* bt416_05_eve.root KEY: TTree h10;1 event root [25] GainHV(&BGOList, 3) Error: No symbol h10.Print() in current scope FILE:/data/norbert/proc/root/macros/ GainHV.C LINE:62 *** Interpreter error recovered *** Thanks, Norbert -- ------------------------------------- Norbert Danneberg Institut f"ur Teilchenphysik Eidg. Techn. Hochschule Z"urich WLGA/E27 CH-5232 Villigen PSI Phone: 0041-56-310-3284 Fax : 0041-56-310-4362 email: Norbert.Danneberg@psi.ch -------------------------------------
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