[ROOT] TFile

From: Federico Roncarolo (Federico.Roncarolo@cern.ch)
Date: Mon Nov 25 2002 - 21:36:52 MET

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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

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Federico Roncarolo     federico.roncarolo@cern.ch       
                            alchemist@infinito.it     
CERN SL/BI 865 1-A27

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