class TGraphC: public TGraph{
public:
  
  TGraphC(){
    cout << "TGraphC" << endl;
  }

  ~TGraphC(){
    cout << "~TGraphC" << endl;
  }
};

class TH1FC: public TH1F{
public:
  
  TH1FC(): TH1F("h","h", 10, 0, 1){
    cout << "TH1FC" << endl;
  }

  ~TH1FC(){
    cout << "~TH1FC" << endl;
  }
};

class TF1C: public TF1{
public:
  
  TF1C(): TF1("f", "1", 0, 1){
    cout << "TF1C" << endl;
  }

  ~TF1C(){
    cout << "~TF1C" << endl;
  }
};

void Draw(){
    
    TCanvas *c = new TCanvas;
    TH1FC *h = new TH1FC;
    TGraphC *g = new TGraphC;
    TF1C *f = new TF1C;
    h->SetBit(kCanDelete);
    g->SetBit(kCanDelete);
    f->SetBit(kCanDelete);
    h->Draw();
    g->Draw("p");
    f->Draw("SAME");
    delete c;
}