Hello, I built a ROOT GUI interface for my data analysis. One of the operations performed by a button handles a TFile object, I open it, write something and close it. When I need to re-open the file and retrieve the objects written in it, I get the message Warning in <TFile::Init>: file /afs/cern.ch/user/f/froncaro/GUI/version_0.2/ws_11e10_hor_nocorrect.root has no keys If I quit the application, re-start it and do exactlely the same action to retrieve the data, everything works. What should I do to properly record the keys and access them without re-starting the application? Thanks a lot, Federico __________________________________________________ Federico Roncarolo federico.roncarolo@cern.ch alchemist@infinito.it CERN SL/BI 865 1-A27 Tel: +41.(0)22.76.75611 Work +41.(0)79.6982190 GSM +33.(0)4.50.40.82.67 Home __________________________________________________
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