i am unable to open the code direct by double clicking button of mfc dialog box

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MFC

VisualC++

// ListDemoDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ListDemo.h"
#include "ListDemoDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CListDemoDlg dialog




CListDemoDlg::CListDemoDlg(CWnd* pParent /*=NULL*/)
: CDialog(CListDemoDlg::IDD, pParent)
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CListDemoDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
DDX_Control(pDX, IDC_LIST1, mylist);
}

BEGIN_MESSAGE_MAP(CListDemoDlg, CDialog)
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
//}}AFX_MSG_MAP
ON_BN_CLICKED(IDC_BUTTON1, &CListDemoDlg::OnBnClickedButton1)
END_MESSAGE_MAP()


// CListDemoDlg message handlers

BOOL CListDemoDlg::OnInitDialog()
{
CDialog::OnInitDialog();

// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon

LVCOLUMN lvColumn;
int nCol;



lvColumn.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
lvColumn.fmt = LVCFMT_LEFT;
lvColumn.cx = 100;
lvColumn.pszText = _T("Product Name");
mylist.InsertColumn(0, &lvColumn);

lvColumn.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
lvColumn.fmt = LVCFMT_LEFT;
lvColumn.cx = 100;
lvColumn.pszText = _T("Volume");
mylist.InsertColumn(1, &lvColumn);

lvColumn.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
lvColumn.fmt = LVCFMT_LEFT;
lvColumn.cx = 100;
lvColumn.pszText = _T("Capital");
mylist.InsertColumn(2, &lvColumn);

lvColumn.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
lvColumn.fmt = LVCFMT_LEFT;
lvColumn.cx = 100;
lvColumn.pszText = _T("Rating");
mylist.InsertColumn(3, &lvColumn);

mylist.SetExtendedStyle(LVS_EX_FULLROWSELECT);


return TRUE; // return TRUE unless you set the focus to a control
}

// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.

void CListDemoDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting

SendMessage(WM_ICONERASEBKGND, reinterpret_cast<wparam>(dc.GetSafeHdc()), 0);

// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;

// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}

// The system calls this function to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CListDemoDlg::OnQueryDragIcon()
{
return static_cast<hcursor>(m_hIcon);
}


void CListDemoDlg::OnBnClickedButton1()
{
CString ProductName = _T("xyz");
CString Volume = _T("1000");
CString Capital = _T("23");
CString Rating = _T("2");

LVITEM lvItem;
int nItem=0;

lvItem.mask = LVIF_TEXT;
lvItem.iItem = 0;
lvItem.iSubItem = 0;
lvItem.pszText = CT2W(((LPCTSTR)ProductName));
nItem = mylist.InsertItem(&lvItem);
for(int i=0;i<10;i++)
{
nItem = mylist.InsertItem(&lvItem);
mylist.SetItemText(nItem, 0, CT2W(((LPCTSTR)ProductName)));
mylist.SetItemText(nItem, 1, CT2W(((LPCTSTR)Volume)));
mylist.SetItemText(nItem, 2, CT2W(((LPCTSTR)Capital)));
mylist.SetItemText(nItem, 3, CT2W(((LPCTSTR)Rating)));
}
UpdateData(FALSE);
}