C / C++ / MFC

CMyListBox1
CMyListBox2
CMyListBox3

CListBox m_ListBox1;
CListBox m_ListBox2;
CListBox m_ListBox3;

CMyListBox1 m_ListBox1;
CMyListBox2 m_ListBox2;
CMyListBox3 m_ListBox3;

VERIFY(m_ListBox1.SubclassDlgItem(IDC_LISTBOX1, this));
VERIFY(m_ListBox2.SubclassDlgItem(IDC_LISTBOX2, this));
VERIFY(m_ListBox3.SubclassDlgItem(IDC_LISTBOX3, this));

#define MAX_RECORDS 1000    // max number of data integers

int array[MAX_RECORDS];     // the array of data integers

int numRecords;             // actual number of integers
                            // in the file

CFileDialog ifile(TRUE,"txt",NULL,OFN_HIDEREADONLY,
		"text files|*.txt|all files|*.*||");

int result = ifile.DoModal();

if (result == IDOK)
{
   CString info;		
   info = ifile.GetPathName();

   ifstream infile;
   infile.open(info);

   numRecords = 0;

   while (!infile.eof())
   {
      if (numRecords == MAX_RECORDS) break;
      infile >> array[numRecords];
      numRecords++;
   }
   if (infile.eof()) numRecords--;

   infile.close();

}

CFileDialog ofile(FALSE,"txt",NULL,OFN_OVERWRITEPROMPT,
                 "text files|*.txt|all files|*.*||");

int result = ofile.DoModal();

if (result == IDOK)
{

   CString info;		
   info = ofile.GetPathName();

   ofstream outfile;
   outfile.open(info);

   for (int i=0; i<numRecords; i++)
                   outfile << array[i] << "\n";

   outfile.close();

}

#include <fstream.h>   // for file i/o

m_psh.dwFlags |= PSH_USEHICON;
m_psh.hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

ModifyStyle(0, WS_MINIMIZEBOX|WS_SYSMENU);

CMenu *pSysMenu = GetSystemMenu(FALSE);
ASSERT(pSysMenu != NULL);
VERIFY(pSysMenu->RemoveMenu(SC_MAXIMIZE, MF_BYCOMMAND));