#include <iostream>
#include <iomanip>

#include <TCanvas.h>
#include <TH2.h>

using namespace std;

void test(){
	gStyle->SetPalette(55);
	TCanvas *c = NULL;
	cout << "1" << endl;	// debug flag 1
	if(c != NULL) delete c;
	cout << "2" << endl;	// debug flag 2
	c = new TCanvas("c", "c", 400, 400);
	cout << "3" << endl;	// debug flag 3
	TH2D *h = NULL;
	char ch = 'b';
	for(int i=0; i<20; i++){
		cout << "Press \"A/a\" to show next pixel, \"Q/q\" to quit." << endl;
		cin >> ch;
		while(ch != 'a' && ch != 'A' && ch != 'q' && ch != 'Q') ch = getchar();
		if(ch == 'q' || ch == 'Q') break;
		c->cd();
		if(i>0) h->Reset("M");
		if(h != NULL) delete h;
		h = new TH2D("h", Form("h%d", i), 20, 0, 20, 20, 0, 20);
		h->GetZaxis()->SetRangeUser(1, 21);
		for(int j=0; j<i+1; j++) h->Fill(i, i);
		h->Draw("COLZ");
		c->Update();
	}

	return;
}