C / C++ / MFC

pix_programmer wrote:

why the constructor of a singleton class is declared as private?

pix_programmer wrote:

What would happen if it is not declared as private?

#include <iostream>
#include <iterator>
int main()
{
	int vals[] = {1, 2, 3 ,4, 5};
	std::copy_n(vals, 5, std::ostream_iterator<int>(std::cout, ",")); // =>1,2,3,4,5,
}

CStdioFile test;
CString itemtext="ABC,123";
CString itemtextm="1";

if (test.Open"C:\\Test.csv"CFile::modeCreate | CFile::modeWrite | CFile::modeNoTruncate))
{
        test.Seek(0,CFile::end);
    test.WriteString("Name");
    test.WriteString(",");
    test.WriteString("Class");
    test.WriteString("\n");

        .WriteString(itemtext);
        test.WriteString(",");

        test.WriteString(itemtextm);
        test.WriteString("\n");

    test.Close();

}

BOOL CYourDialog::OnInitDialog()
{
  BOOL bResult = CDialog::OnInitDialog();

  // CListCtrlEx m_cListCtrl
  // CHeaderCtrlEx m_cHeader
  
  CHeaderCtrl* pcOriginalHeader(m_cListCtrl.GetHeaderCtrl());
  if (pcOriginalHeader->GetSafeHwnd()) {
    m_cHeader.SubclassWindow(pcOriginalHeader->GetSafeHwnd());
    // use the extended header class now
  }

  return bResult;
}

They sought it with thimbles, they sought it with care;
They pursued it with forks and hope;
They threatened its life with a railway-share;
They charmed it with smiles and soap.

int CTestList3View::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if(CListView::OnCreate(lpCreateStruct) == -1)return -1;

	// TODO: Add your specialized creation code here

	DWORD dwStyle = WS_CHILD | WS_VISIBLE | WS_TABSTOP | LVS_REPORT;

	BOOL bResult = m_List1.Create(dwStyle,CRect(0,0,0,0),this,IDC_LIST1);

	return (bResult ? 0 : -1);

//	return 0;
}

LVCOLUMN col;

col.mask = LVCF_TEXT|LVCF_WIDTH|LVCF_FMT;
col.pszText = "Name";
col.cx = 200;
col.fmt = LVCFMT_LEFT;
SendMessage(hwndList,LVM_INSERTCOLUMN,0,(int)&col);