Re: [ROOT] TFile

From: Rene Brun (Rene.Brun@cern.ch)
Date: Tue Nov 26 2002 - 00:10:27 MET


Hi Federico,

I cannot reproduce this problem. Are you really closing the file?
Could you send the strict minimum to reproduce the problem?

Rene Brun

On Mon, 25 Nov 2002, Federico Roncarolo wrote:

> 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
> 
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