#include <iostream>
#include "TApplication.h"
#include "TGFrame.h"
#include "TGMenu.h"
#include "TRootEmbeddedCanvas.h"
#include "TGButton.h"
#include "TGButtonGroup.h"
#include "TCanvas.h"
#include "TString.h"
#include "TH2F.h"

class MainWindow : public TGMainFrame {
public:
   MainWindow(const TGWindow *p, UInt_t w, UInt_t h);
   virtual ~MainWindow();    
   void CloseWindow();
   void SelectHisto(Int_t);
  
private:
   TGMenuBar           *fMenuBar;
   TGPopupMenu         *fMenuFile;
   TRootEmbeddedCanvas *fCanvas;
   TH2F                *box[2];

   ClassDef(MainWindow,0);
}; 

MainWindow::MainWindow(const TGWindow *p, UInt_t w, UInt_t h) : TGMainFrame(p,w,h)
{
   // main frame
   SetWMPosition(0,0);
   SetCleanup(kDeepCleanup);
   Connect("CloseWindow()", "MainWindow", this, "CloseWindow()");
  
   // TCanvas
   fCanvas = new TRootEmbeddedCanvas("Canvas", this, 500, 500);
   AddFrame(fCanvas, new TGLayoutHints(kLHintsExpandX|kLHintsExpandY,10,10,0,1));

   // horizontal frame
   TGHorizontalFrame *fHframe0 = new TGHorizontalFrame(this,0,0,0);
   AddFrame(fHframe0, new TGLayoutHints(kLHintsExpandX,10,10,10,0));
   fHframe0->SetHeight(200);

   TGButtonGroup *hGroup = new TGButtonGroup(fHframe0, "Histo");
   hGroup->SetTitlePos(TGGroupFrame::kLeft);
   new TGRadioButton(hGroup, "histo 0", 0);
   new TGRadioButton(hGroup, "histo 1", 1);
   hGroup->SetButton(0,kTRUE);
   hGroup->Connect("Pressed(Int_t)", "MainWindow", this, "SelectHisto(Int_t)");
   fHframe0->AddFrame(hGroup, new TGLayoutHints(kLHintsNormal));

   SetWindowName("min");  
   MapSubwindows();
   Resize(GetDefaultSize());
   MapWindow();

   // create histograms
   box[0] = new TH2F("box0", "IBL",      20, 0.5, 20.5, 14, 0.5, 14.5);  
   box[1] = new TH2F("box1", "B-Layer",  13, 0.5, 13.5, 22, 0.5, 22.5);  
   box[0]->Draw();
}

MainWindow::~MainWindow(){
   Cleanup();
   gApplication->Terminate();
}

void MainWindow::CloseWindow(){
   delete this;
}

void MainWindow::SelectHisto(Int_t id){
   cout << "Selected layer = " << id << endl;
   cout << box[1]->GetNbinsX() << endl;

   //box[m_selLayer]->Draw();
   //fCanvas->GetCanvas()->Modified();
   //fCanvas->GetCanvas()->Update();
}

void min()
{
   new MainWindow(gClient->GetRoot(),100,100);
}