Hi Rene, I have just found out that the reason we could not write a histogram successfully was because the VC++ 6.0 was installed without any of the service packs. I just installed service pack 5.0 which I downloaded from the microsoft site. Everything works in our Pixel_RootQT application as expected. Thanks for your help. Aldo. > > 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 -- *********************************************************** ATLAS Experiment - Pixel Group (Physics Division) Lawrence Berkeley National Laboratory Aldo F. Saavedra Email: AFSaavedra@lbl.gov Phone: 1 510 486 4690 Postal Address: Lawrence Berkeley National Laboratory 1 Cyclotron Rd Mailstop 50B-6208 Berkeley, CA 94720 USA
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