RE: [ROOT] running precompiled code

From: Philippe Canal (pcanal@fnal.gov)
Date: Fri Oct 18 2002 - 13:12:53 MEST 

Hi Ricardo,

You need to declare your object to CINT.
for example you can do
	TString declare = Form("inclDstarDstar t* = %p;",&p);
	gROOT->ProcessLine( declare );

Cheers,
Philippe

-----Original Message-----
From: owner-roottalk@pcroot.cern.ch
[mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Riccardo de Sangro
Sent: Friday, October 18, 2002 10:39 AM
To: roottalk@pcroot.cern.ch
Subject: [ROOT] running precompiled code


Hello,
 I have made the following program to be able to pre-compile my analysis 
code and run under root:

//      Original Author:  Rene Brun (bench.cxx)
//
// This little file is a wrapper for a .cc file containing
// a ROOT job.
////////////////////////////////////////////////////////////////////

#include "TROOT.h"
#include "TTree.h"
#include "TRint.h"

#include "inclDstarDstar.hh"
#include "inclDstarDstar.cc"

int main(int argc, char** argv)
{
  TRint *theApp = new TRint("Rint", &argc, argv, 0, 0);

  TTree::SetBranchStyle(1); // use the new Branch style

  inclDstarDstar t(0,1,"signal.list");
  t.BookHistos();
  t.Loop(100000);
  //  t.DrawHistos("eps");

// the following line will give back the root prompt to the user,
// but he/she won't have -AFAIK- available "t" for t->Draw("eps").
  theApp->Run();

  return 0;
}


My analysis code is in inclDstarDstar.cc/.hh.

Everything runs fine (and indeed a good factor faster than the usual 
interpreted version), and at the end of the job
I am left with a root prompt, I believe inside the Run() loop of the 
TRint application.

The question is: how (if ever) can I access my "t" object? I have not 
been able to figure out.

thanks for any help

Riccardo

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