no horizontal scroll bar?

im writting this program im reading out of a book, when i run the program it is supposed to have a vertical scroll bar and a horazontal scroll bar, but the horazontal scroll bar doesnt show up when i run it. i think my main problem is im reading a book that was wrote in visual c++ version 5, and im using msv c++ 6.if someone can look at this code and tell me if i need to use a differant class with version 6, and what the differances are from version 5 and 6. do i need to buy a book on version 6? or can i just modify the 5 classes? heres the code, and thanks for any input
// ex04cView.cpp : implementation of the CEx04cView class
//

#include "stdafx.h"
#include "ex04c.h"

#include "ex04cDoc.h"
#include "ex04cView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CEx04cView

IMPLEMENT_DYNCREATE(CEx04cView, CScrollView)

BEGIN_MESSAGE_MAP(CEx04cView, CScrollView)
//{{AFX_MSG_MAP(CEx04cView)
ON_WM_KEYDOWN()
ON_WM_LBUTTONDOWN()
//}}AFX_MSG_MAP
// Standard printing commands
ON_COMMAND(ID_FILE_PRINT, CScrollView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_DIRECT, CScrollView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_PREVIEW, CScrollView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CEx04cView construction/destruction

CEx04cView::CEx04cView() : m_rectEllipse(0, 0, 4000, -4000)
{
m_nColor = GRAY_BRUSH;
}

CEx04cView::~CEx04cView()
{
}

BOOL CEx04cView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs

return CScrollView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CEx04cView drawing

void CEx04cView::OnDraw(CDC* pDC)
{
pDC->SelectStockObject(m_nColor);
pDC->Ellipse(m_rectEllipse);
}

void CEx04cView::OnInitialUpdate()
{
CScrollView::OnInitialUpdate();
CSize sizeTotal(20000, 30000); // 20 by 30 cm
CSize sizePage(sizeTotal.cx / 2, sizeTotal.cy / 2);
CSize sizeLine(sizeTotal.cx / 50, sizeTotal.cy / 50);
SetScrollSizes(MM_HIMETRIC, sizeTotal, sizePage, sizeLine);
}

/////////////////////////////////////////////////////////////////////////////
// CEx04cView printing

BOOL CEx04cView::OnPreparePrinting(CPrintInfo* pInfo)
{
// default preparation
return DoPreparePrinting(pInfo);
}

void CEx04cView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add extra initialization before printing
}

void CEx04cView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CEx04cView diagnostics

#ifdef _DEBUG
void CEx04cView::AssertValid() const
{
CScrollView::AssertValid();
}

void CEx04cView::Dump(CDumpContext& dc) const
{
CScrollView::Dump(dc);
}

CEx04cDoc* CEx04cView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CEx04cDoc)));
return (CEx04cDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CEx04cView message handlers

void CEx04cView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
switch (nChar) {
case VK_HOME:
OnVScroll(SB_TOP, 0, NULL);
OnHScroll(SB_LEFT, 0, NULL);
break;
case VK_END:
OnVScroll(SB_BOTTOM, 0, NULL);
OnHScroll(SB_RIGHT, 0, NULL);
break;
case VK_UP:
OnVScroll(SB_LINEUP, 0, NULL);
break;
case VK_DOWN:
OnVScroll(SB_LINEDOWN, 0, NULL);
break;
case VK_PRIOR:
OnVScroll(SB_PAGEUP, 0, NULL);
break;
case VK_NEXT:
OnVScroll(SB_PAGEDOWN, 0, NULL);
break;
case VK_LEFT:
OnHScroll(SB_LINELEFT, 0, NULL);
break;
case VK_RIGHT:
OnHScroll(SB_LINERIGHT, 0, NULL);
break;
default:
break;
}
}

void CEx04cView::OnLButtonDown(UINT nFlags, CPoint point)
{
CClientDC dc(this);
OnPrepareDC(&dc);
CRect rectDevice = m_rectEllipse;
dc.LPtoDP(rectDevice);
if (rectDevice.PtInRect(point)) {
if (m_nColor == GRAY_BRUSH) {
m_nColor = WHITE_BRUSH;
}
else{
m_nColor = GRAY_BRUSH;
}
InvalidateRect(rectDevice);
}
}




----------------------------------------------------------------------------------
heres the header files
// ex04cView.h : interface of the CEx04cView class
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_EX04CVIEW_H__94911C0B_4FAD_11D0_8FCB_ 00C04FC2A0C2__INCLUDED_)
#define AFX_EX04CVIEW_H__94911C0B_4FAD_11D0_8FCB_00C04FC2A 0C2__INCLUDED_

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000

class CEx04cView : public CScrollView
{
protected: // create from serialization only
CEx04cView();
DECLARE_DYNCREATE(CEx04cView)

// Attributes
public:
CEx04cDoc* GetDocument();

// Operations
public:

// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CEx04cView)
public:
virtual void OnDraw(CDC* pDC); // overridden to draw this view
virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
protected:
virtual void OnInitialUpdate(); // called first time after construct
virtual BOOL OnPreparePrinting(CPrintInfo* pInfo);
virtual void OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo);
virtual void OnEndPrinting(CDC* pDC, CPrintInfo* pInfo);
//}}AFX_VIRTUAL

// Implementation
public:
virtual ~CEx04cView();
#ifdef _DEBUG
virtual void AssertValid() const;
virtual void Dump(CDumpContext& dc) const;
#endif

protected:

// Generated message map functions
protected:
//{{AFX_MSG(CEx04cView)
afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags);
afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
private:
int m_nColor;
CRect m_rectEllipse;
};

#ifndef _DEBUG // debug version in ex04cView.cpp
inline CEx04cDoc* CEx04cView::GetDocument()
{ return (CEx04cDoc*)m_pDocument; }
#endif

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Developer Studio will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_EX04CVIEW_H__94911C0B_4FAD_11D0_8FCB_ 00C04FC2A0C2__INCLUDED_)