[code]TFile *f = new TFile(“test.root”, “READ”);
TListIter next(f->GetListOfKeys());
TObject *o;
while (o = next()) o->Print();
next.Reset();
TH1F *h;
while (o = next()) {
f->GetObject(o->GetName(), h);
if (h && (h->GetFunction(“gaus”)))
std::cout << o->GetName() << " : "
<< h->GetFunction(“gaus”)->GetParameter(1)
<< std::endl;
}[/code]