THbookTree

    public:

                       THbookTree()
                       THbookTree(const char* name, Int_t id)
                       THbookTree(const THbookTree&)
               virtual ~THbookTree()
        static TClass* Class()
         virtual Int_t GetEntry(Long64_t entry = 0, Int_t getall = 0)
           THbookFile* GetHbookFile()
         virtual Int_t GetID()
         virtual Int_t GetType()
              Float_t* GetX()
          virtual void InitBranches(Long64_t entry)
       virtual TClass* IsA() const
                 char* MakeX(Int_t nvars)
          virtual void Print(Option_t* option = "") const
      virtual Long64_t SetEntries(Long64_t n = -1)
          virtual void SetHbookFile(THbookFile* file)
          virtual void SetType(Int_t atype)
          virtual void ShowMembers(TMemberInspector& insp, char* parent)
          virtual void Streamer(TBuffer& b)
                  void StreamerNVirtual(TBuffer& b)

    protected:

            Int_t fID    Hbook identifier
            Int_t fType  RWN (0) or CWN (1)
            char* fX     storage area for RWN
           Bool_t fInit  flag to know if branches computed
      THbookFile* fFile  pointer to Hbook file

Class Description

                                                                      
 THbookTree                                                           
                                                                      
 A wrapper class supporting Hbook ntuples (CWN and RWN).              
 The normal TTree calls can be used, including TTree::Draw().         
 Data read directly from the Hbook file via THbookFile.               
                                                                      
 IMPORTANT NOTE                                                       
 When setting the branch address (via THbookTree::SetBranchAddress)   
 for a branch in an Hbook block containing several names, eg          
    Hbook block SELEVN with the following variables:                  
 ******************************************************************   
  *      1   * R*4  *         *              * SELEVN   * WGGS        
  *      2   * R*4  *         *              * SELEVN   * AM12        
  *      3   * R*4  *         *              * SELEVN   * AM34        
  *      4   * R*4  *         *              * SELEVN   * AM14        
  *      5   * R*4  *         *              * SELEVN   * AM32        
  *      6   * R*4  *         *              * SELEVN   * PtPI(4)     
  *      7   * R*4  *         *              * SELEVN   * PHIPI(4)    
  *      8   * R*4  *         *              * SELEVN   * THTPI(4)    
 one must define a C struct like:                                     
   struct {                                                           
      Float_t Wggs;                                                   
      Float_t Am12;                                                   
      Float_t Am34;                                                   
      Float_t Am14;                                                   
      Float_t Am32;                                                   
      Float_t Ptpi[4];                                                
      Float_t Phipi[4];                                               
      Float_t Thtpi[4];                                               
   } event;                                                           
                                                                      
 and set ONLY the first variable address with:                        
    h96->SetBranchAddress("Wggs",&event.Wggs);                        
                                                                      

default constructor

constructor

destructor

Initialize the branch addresses

Print an overview of the hbook ntuple

Set the number of entries in the tree header and its branches