PViewer::PViewer(UInt_t w, UInt_t h)
  : TGMainFrame(gClient->GetRoot(),w,h) {
 
  fECanvas = new TRootEmbeddedCanvas ("Ecanvas",this,900,900);
  AddFrame(fECanvas, new TGLayoutHints (kLHintsExpandX | kLHintsExpandY,10,10,10,1));
  hframe = new TGHorizontalFrame(this,200,40);
  
  TGTextButton *exit = new TGTextButton(hframe,"&Exit","gApplication->Terminate()");
   hframe->AddFrame(exit,new TGLayoutHints(kLHintsCenterX,5,5,3,4));
  exit->SetTextColor(kRed);
  exit->Resize(100,100);
  AddFrame(hframe,new TGLayoutHints(kLHintsCenterX,2,2,2,2));

  TGTextButton *prev = new TGTextButton(hframe,"&Prev");
  prev->Connect("Clicked()","PViewer",this,"DoPrev()");
  hframe->AddFrame(prev,new TGLayoutHints(kLHintsCenterX,5,5,3,4));

  TGTextButton *save = new TGTextButton(hframe,"&Save");
  save->Connect("Clicked()","PViewer",this,"DoSave()");
  hframe->AddFrame(save,new TGLayoutHints(kLHintsCenterX,5,5,3,4));

  
  SetWindowName("Raw Event Display");

  MapSubwindows();
  Resize(GetDefaultSize());
  MapWindow();

}

void PViewer::DoPrev(){
.....
}


void PViewer::DoSave(){

  
  if (fileopenflag==0) {
    pSaveCanvas = new TCanvas("pSaveCanvas","Event",1202,829);
    //pSaveCanvas = fECanvas->GetCanvas();
    sprintf(SaveFileName,"Saved_events.eps");
    sprintf(SaveFileName_open,"Saved_events.eps[");
    
    pSaveCanvas->Print(SaveFileName_open);

    fileopenflag = 1;
    CreateSavingCanvas();
  }
  else{
    CreateSavingCanvas();
  }
  
  
}

void PViewer::DoExit(){
  if (fileopenflag==1) {
   sprintf(SaveFileName_close,"Saved_events.eps]");
    pSaveCanvas->Print(SaveFileName_close);
 }
}




void PViewer::CreateSavingCanvas(){

  pSaveCanvas = new TCanvas("pSaveCanvas","Event",1202,829);
  //pSaveCanvas = fECanvas->GetCanvas();
  pSaveCanvas->cd();
  ..................
  pSaveCanvas->Update();
  pSaveCanvas->Print(SaveFileName);
  pSaveCanvas->Close();
}