[ROOT] RE: root trees

From: Philippe Canal (pcanal@fnal.gov)
Date: Thu Nov 11 2004 - 21:11:11 MET 

Hi,

You need to declare the typedef to CINT.
For example

Add to your linkdef file

#pragma link C++ typedef UHTTrkListType;

Cheers,
Philippe
-----Original Message-----
From: owner-about-root@listserv.fnal.gov
[mailto:owner-about-root@listserv.fnal.gov] On Behalf Of
j.rademacker1@physics.ox.ac.uk
Sent: Thursday, November 11, 2004 12:21 PM
To: cdf_software_help@fnal.gov; about-root@fnal.gov; roottalk@root.cern.ch
Subject: root trees

Hi

I'm trying to write an object I have to a root file, from within root. I
compile my code with the + option and then run it in batch mode.

In my class header, I have the ClassDef macro, and in my .C file the
correspondig ClassImp macro. I have that for all classes involved, and
the class I want to save inherits from TObject (other classes that are
members of this one don't inherit from TObject, but I guess that doesn't
matter?). Everything compiles fine. My program even produces a non-empty
output file. But when I want to read it back in, I get the following
run-time error:

==========================================================
Warning in <TStreamerInfo::BuildOld>: Cannot convert
UHTDecay::stableParts from type:vector<
UHTTrack> to type:UHTTrkListType, skip element
==========================================================

Now UHTTrkListType is just a typedef for std::vector<UHTTrack>. So there
is no conversion to be done. What am I doing wrong? Can I use typedefs
at all? And vectors? If so, how do I get root to know about them?

Thanks a lot!

Jonas

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 Jonas Rademacker, Denys Wilkinson Bldg, Keble Road, Oxford OX1 3RH, UK
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