Hi Yannick, You are hitting a machine dependent problem connected with the order in which shared libs are initialized. If you use a TApplication (or TRint ) object inside your main program, your problems will be solved. TApplication will take care of making a correct initialisation of the dictionaries if not yet done. See examples in $ROOTSYS/test/hworld, guitest, stress Rene Brun Patois Yannick wrote: > > Hi rooters, > > If I follow the TROOT object declaration as explained on it's web page > (http://root.cern.ch/root/html/TROOT.html) it doesnt work for me : > > ----- > #include <TROOT.h> > #include <TFile.h> > #include <TTree.h> > #include "C_brut_plastic_data.H" // <-- This is my ROOT class > > TROOT root_stuff("test","test analysis"); > > void toto(void); > > main() > { > toto(); > } > > void toto(void) > { > TFile *root_file; > TTree *orion_events; > C_brut_plastic_data brut_plastic_data; > root_file = new TFile("toto.root","RECREATE","Orion events"); > orion_events = new TTree("orion_events","Orion manip events"); > orion_events->Branch("brut_plastic","C_brut_plastic_data",&brut_plastic_data); > } > ---- > I compile the main and C_brut_plastic_data.cpp, create the dictionary, > compile it and link. But... > > The complain is when I create the branch : > Warning in <TClass::TClass>: no dictionary for class C_brut_plastic_data is available > > If now I just change the status of 'root_stuff', passing it from a > static object to a local object of main : > > ----- > #include <TROOT.h> > #include <TFile.h> > #include <TTree.h> > #include "C_brut_plastic_data.H" // <-- This is my ROOT class > > void toto(void); > > main() > { > TROOT root_stuff("test","test analysis"); > toto(); > } > > void toto(void) > { > TFile *root_file; > TTree *orion_events; > C_brut_plastic_data brut_plastic_data; > root_file = new TFile("toto.root","RECREATE","Orion events"); > orion_events = new TTree("orion_events","Orion manip events"); > orion_events->Branch("brut_plastic","C_brut_plastic_data",&brut_plastic_data); > } > ---- > > The code seems to work and there's no warning anymore. > > I dont really understand why... Did I miss something ? > > Yannick > > PS : sun CC compiler CC5 in compat=4 mode > > _/ Yannick Patois _________________ Address (home) __________________ > | irc(undernet): Garp on #france25+ | La Villa des Sciences | > | email : patois@ganil.fr | 12, avenue de Cambridge | > | web :http://www.sura.org/~patois/ | 14200 Herouville-Saint-Clair | > | Tel/Fax-home:+33 (0)2 31 94 50 32 | FRANCE | > |___________________________________|__________________________________|
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