Hi Philippe, In the header file that defines the V0 class, I (now) have: #pragma link C++ namespace recocert; #pragma link C++ class recocert::V0+; and later on: class V0 : public TObject { (...) }; When I run the program, it says: Error in <TTree::Bronch>: Cannot find class:recocert::V0 So I think the answer to your question is yes, but... Thanks- Paul Philippe Canal wrote: >Hi Paul, > >This should work. > >Did you create a dictionary for the namespace recocert? > #pragma link C++ namespace recocert; > > >Cheers, >Philippe. > >-----Original Message----- >From: owner-roottalk@pcroot.cern.ch >[mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Paul Balm >Sent: Wednesday, July 02, 2003 8:07 AM >To: roottalk@pcroot.cern.ch >Subject: [ROOT] filling tree with objects > > >Hello, > >I'm trying to fill a TTree with objects of a class "V0", declared in a >namespace "recocert". I do this: > >TTree* _mytree = new TTree("V0tree","secondary vertices"); >V0* _myV0 = new V0(); > >_mytree->Branch("V0s", "recocert::V0",&_myV0); > >This gives me an error message: > >Error in <TTree::Bronch>: Cannot find class:recocert::V0 > >At first I was creating the branch like this: > >_mytree->Branch("V0s", "V0",&_myV0); > >(i.e. omitting the "recocert::"), this gave me the same error message, >but, without "recocert::". > >In the same file where I create the tree and the branch, I have "using >namespace recocert;" > >Any idea what the problem is here? Is this just not supported? Are there >ways to work around it? > >I'm using this root version: >/D0/ups/root/Linux-2-4/v3_05_00bKCC_4_0-exception-opt-thread >On Red Hat 7.1. > >Thanks! > >Paul > > >
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