[ROOT] Deriving a class after using Makeclass

From: Claus Horn (claus.horn@desy.de)
Date: Tue Jul 15 2003 - 18:51:12 MEST


Hello ROOTers,

I am trying to derive a class (Aphotclass) from the class
which is generated automatically by MakeClass (photclass).
My declaration looks like this:

class Aphotclass : public photclass {
   Aphotclass(TTree *tree=0) : photclass(tree)  {};
   ~Aphotclass() {};
   //Int_t  Cut(Int_t entry);    // I dont want to change these
   //Int_t  GetEntry(Int_t entry);
   //Int_t  LoadTree(Int_t entry);
   //void   Init(TTree *tree);
   void   Loop();               // This is what I want to overwrite     
   //Bool_t Notify();
   //void   Show(Int_t entry = -1);
};

Under ROOT I get:

root [1] .L Aphotclass.C
root [2] Aphotclass m;
Error: can not call private or protected function FILE:(tmpfile) LINE:1
  Aphotclass.h  18 Aphotclass Aphotclass::Aphotclass(TTree*);
Calling : Aphotclass::Aphotclass();
Match rank: file     line  signature
*        0 Aphotclass.h  18 Aphotclass Aphotclass::Aphotclass(TTree*);
*** Interpreter error recovered ***
root [3]  

There seems to be a problem with the constructor.

I would be very glad if somebody could help me to get 
this runnig.

Thanks,

Claus



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