Thanks for your quick response--
As for the ROOT version I'm using, it's 3.02/06. I checked the following
functions in my code:
"file->IsOpen" returned 1,
"file->IsZombie" returned 0,
and "file->Errno" returned 2.
And still, I get a runtime error when I try to write the histogram.
--John
On Sun, 13 Jan 2002, Rene Brun wrote:
> Hi John,
>
> Obviously this trivial test works with the standard ROOT executable.
> Is the TFile constructor reporting an error message ?
>
> Which version of ROOT are you using?
>
> Rene Brun
>
> On Sat, 12 Jan 2002 jcfree@socrates.Berkeley.EDU wrote:
>
> >
> > I've been having a lot of trouble writing histograms to a file in my
> > program. I'm using VC++ 6 on Windows 2000, and am using the QT libraries
> > for my GUI interface. Even the simplest code doesn't seem to work, e.g.,
> >
> > TFile* file = new TFile("e:\\rt\\testfile.root","UPDATE");
> > TH1S* testhisto = new TH1S("histo","histo",100,0,100);
> > testhisto->Write();
> > file->Close();
> >
> > will cause the program to indicate "Abnormal program termination" when
> > execution reaches the "testhisto->Write()" line. Can anyone help me out?
> >
> > Thanks,
> >
> > John
> >
>
>
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