Visual C++ MFC Dialog App - Student Information System - Search by Name, Age, City, etc
I have come up with student information system using Visual C++ - Dialog based application. Scroll down to see the download instructions and output. You can add, edit, delete students along with search by name, age, city, country, GPA, etc.
Source Code
//StudentData.h
#pragma once
#pragma warning(disable:4996)
#pragma warning(disable:4267)
#pragma warning(disable:4018)
#pragma warning(disable:4101)
#include <vector>
#include <map>
#include <string>
struct CStudent
{
public:
int m_idx;
char m_name[64];
char m_country[32];
char m_city[64];
int m_age;
double m_mark_gpa;
CStudent()
{
m_idx = 0;
strcpy(m_name, "");
strcpy(m_city, "");
strcpy(m_country, "");
m_age = 0;
m_mark_gpa = 0.0;
}
};
struct CStudents
{
char m_fileName[1024];
std::vector<CStudent> m_studList;
std::map<int, std::vector<int> > m_ageIndex;
std::map<double, std::vector<int> > m_gpaIndex;
std::map<std::string, std::vector<int> > m_nameIndex;
std::map<std::string, std::vector<int> > m_cityIndex;
std::map<std::string, std::vector<int> > m_countryIndex;
CStudents(const char *filename)
{
strcpy(m_fileName, filename);
ReadRecords();
}
void SimulateRecords()
{
char name[24];
char city[24];
char country[24];
int age;
double gpa;
static const char*arrCity[] = { "San Jose", "Iselin", "Madras", "New York", "Hyderabad", "Delhi", "Houston", "Seatle", "Wahsington", "Mumbai", "Pune", "Bangalore" };
static const char*arrCountry[] = { "USA", "USA", "India", "USA", "India", "India", "USA", "USA", "USA", "India", "India", "India" };
CTime t = CTime::GetCurrentTime();
srand(t.GetSecond());
for(int i = 0; i < 250; i++)
{
CStudent s;
s.m_name[0] = 'A' + (rand() % 26);
s.m_name[1] = 'A' + (rand() % 26);
s.m_name[2] = 'A' + (rand() % 26);
s.m_name[3] = 'A' + (rand() % 26);
s.m_name[4] = 'A' + (rand() % 26);
s.m_name[5] = '\0';
s.m_age = 15 + (rand() % 8);
s.m_mark_gpa = 2 + (((rand() % 300)) / 100.0);
int pos = (rand() % 11);
strcpy(s.m_city, arrCity[pos]);
strcpy(s.m_country, arrCountry[pos]);
m_studList.push_back(s);
WriteRecords(false);
}
ReadRecords();
}
void AddRecord(CStudent &s)
{
m_studList.push_back(s);
WriteRecords();
}
void AddRecord(const char *name, int age, const char *country, char *city, double gpa)
{
CStudent s;
strcpy(s.m_name,name);
strcpy(s.m_city,city);
strcpy(s.m_country,country);
s.m_age = age;
s.m_mark_gpa = gpa;
m_studList.push_back(s);
WriteRecords();
}
int ReadRecords()
{
FILE *istream = fopen(m_fileName, "rb");
if (istream == 0)
return false;
m_studList.clear();
m_ageIndex.clear();
m_gpaIndex.clear();
m_nameIndex.clear();
m_cityIndex.clear();
m_countryIndex.clear();
char buf[4096];
for(int i = 0; ; i++)
{
if(feof(istream))
break;
int nBytesRead = fread(buf, 1, sizeof(CStudent), istream);
if(nBytesRead < sizeof(CStudent))
break;
CStudent s;
char *p = reinterpret_cast<char*>(&s);
memcpy(p, buf, sizeof(CStudent));
m_studList.push_back(s);
int pos = m_studList.size() - 1;
m_ageIndex[s.m_age].push_back(pos);
m_gpaIndex[s.m_mark_gpa].push_back(pos);
m_nameIndex[s.m_name].push_back(pos);
m_cityIndex[s.m_city].push_back(pos);
m_countryIndex[s.m_country].push_back(pos);
}
fclose(istream);
return m_studList.size();
}
int WriteRecords(bool bReload = true)
{
FILE *ostream = fopen(m_fileName, "wb");
if (ostream == 0)
return false;
int nTotalRecordsWritten = 0;
char buf[4096];
for(int i = 0; i < m_studList.size(); i++)
{
const CStudent &s = m_studList[i];
fwrite((const char*)&s, 1, sizeof(CStudent), ostream);
nTotalRecordsWritten++;
}
fclose(ostream);
if(bReload == true)
ReadRecords();
return nTotalRecordsWritten;
}
};
extern CStudents theStudents;
//StudentData.CPP
#include "stdafx.h"
#include "studentdata.h"
CStudents theStudents("c:\\kathir.bin");
// StudentInformationSystemDlg.cpp : implementation file
//
#include "stdafx.h"
#include "StudentInformationSystem.h"
#include "StudentInformationSystemDlg.h"
#include "StudentData.h"
#include "StudentEditDlg.h"
CStudentInformationSystemDlg::CStudentInformationSystemDlg(CWnd* pParent /*=NULL*/)
: CDialog(CStudentInformationSystemDlg::IDD, pParent)
, m_valueText(_T(""))
, m_keyText(_T(""))
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
m_searchIndex = 0;
}
void CStudentInformationSystemDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
DDX_Control(pDX, IDC_LIST1, m_listCtrl);
DDX_Control(pDX, IDC_KEY_COMBO, m_keyCtrl);
DDX_Control(pDX, IDC_VALUE_COMBO, m_valueCtrl);
DDX_CBString(pDX, IDC_VALUE_COMBO, m_valueText);
DDX_CBString(pDX, IDC_KEY_COMBO, m_keyText);
}
BEGIN_MESSAGE_MAP(CStudentInformationSystemDlg, CDialog)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
//}}AFX_MSG_MAP
ON_BN_CLICKED(IDOK, &CStudentInformationSystemDlg::OnBnClickedOk)
ON_BN_CLICKED(IDCANCEL, &CStudentInformationSystemDlg::OnBnClickedCancel)
ON_BN_CLICKED(IDC_SIMULATE, &CStudentInformationSystemDlg::OnBnClickedSimulate)
ON_CBN_SELCHANGE(IDC_KEY_COMBO, &CStudentInformationSystemDlg::OnCbnSelchangeKeyCombo)
ON_CBN_SELCHANGE(IDC_VALUE_COMBO, &CStudentInformationSystemDlg::OnCbnSelchangeValueCombo)
ON_BN_CLICKED(IDC_ADD, &CStudentInformationSystemDlg::OnBnClickedAdd)
ON_BN_CLICKED(IDC_EDIT, &CStudentInformationSystemDlg::OnBnClickedEdit)
ON_BN_CLICKED(IDC_DELETE, &CStudentInformationSystemDlg::OnBnClickedDelete)
ON_BN_CLICKED(IDC_DELETE_ALL, &CStudentInformationSystemDlg::OnBnClickedDeleteAll)
ON_NOTIFY(HDN_ITEMDBLCLICK, 0, &CStudentInformationSystemDlg::OnHdnItemdblclickList1)
ON_NOTIFY(NM_DBLCLK, IDC_LIST1, &CStudentInformationSystemDlg::OnNMDblclkList1)
END_MESSAGE_MAP()
static void AddData(CListCtrl &ctrl, int row, int col, const char *str)
{
LVITEM lv;
lv.iItem = row;
lv.iSubItem = col;
lv.pszText = (LPSTR) str;
lv.mask = LVIF_TEXT;
if(col == 0)
ctrl.InsertItem(&lv);
else
ctrl.SetItem(&lv);
}
// CStudentInformationSystemDlg message handlers
BOOL CStudentInformationSystemDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// Add "About..." menu item to system menu.
// IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);
CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}
// 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
m_listCtrl.InsertColumn(0, "No");
m_listCtrl.SetColumnWidth(0, 50);
m_listCtrl.InsertColumn(1, "Name");
m_listCtrl.SetColumnWidth(1, 80);
m_listCtrl.InsertColumn(2, "Age");
m_listCtrl.SetColumnWidth(2, 50);
m_listCtrl.InsertColumn(3, "City");
m_listCtrl.SetColumnWidth(3, 70);
m_listCtrl.InsertColumn(4, "Country");
m_listCtrl.SetColumnWidth(4, 60);
m_listCtrl.InsertColumn(5, "GPA");
m_listCtrl.SetColumnWidth(5, 50);
RefreshData();
return TRUE; // return TRUE unless you set the focus to a control
}
void CStudentInformationSystemDlg::RefreshData()
{
while(m_keyCtrl.GetCount() > 0)
m_keyCtrl.DeleteString(0);
m_keyCtrl.Clear();
while(m_valueCtrl.GetCount() > 0)
m_valueCtrl.DeleteString(0);
m_valueCtrl.Clear();
m_keyCtrl.AddString("All");
m_keyCtrl.AddString("Name");
m_keyCtrl.AddString("Age");
m_keyCtrl.AddString("City");
m_keyCtrl.AddString("Country");
m_keyCtrl.AddString("GPA");
m_keyCtrl.SetCurSel(0);
m_searchIndex = 0;
ShowData();
}
void CStudentInformationSystemDlg::DisplayStudent(int recpos, int winpos)
{
char buf[32];
const CStudent &s = theStudents.m_studList[recpos];
sprintf(buf, "%d", recpos + 1);
AddData(m_listCtrl, winpos, 0, buf);
AddData(m_listCtrl, winpos, 1, s.m_name);
sprintf(buf, "%d", s.m_age);
AddData(m_listCtrl, winpos, 2, buf);
AddData(m_listCtrl, winpos, 3, s.m_city);
AddData(m_listCtrl, winpos, 4, s.m_country);
sprintf(buf, "%.2lf", s.m_mark_gpa);
AddData(m_listCtrl, winpos, 5, buf);
}
void CStudentInformationSystemDlg::ShowData()
{
m_listCtrl.DeleteAllItems();
if(m_searchIndex == 0)
{
for(int i = 0; i < theStudents.m_studList.size(); i++)
{
DisplayStudent(i,i);
}
}
else if(m_searchIndex == 1)
{
std::string key = (const char*) m_valueText;
std::vector<int> list = theStudents.m_nameIndex[key];
for(int i = 0; i < list.size(); i++)
{
DisplayStudent(list[i],i);
}
}
else if(m_searchIndex == 2)
{
std::string key = (const char*) m_valueText;
std::vector<int> list = theStudents.m_cityIndex[key];
for(int i = 0; i < list.size(); i++)
DisplayStudent(list[i],i);
}
else if(m_searchIndex == 3)
{
std::string key = (const char*) m_valueText;
std::vector<int> list = theStudents.m_countryIndex[key];
for(int i = 0; i < list.size(); i++)
DisplayStudent(list[i],i);
}
else if(m_searchIndex == 4)
{
int key = atoi(m_valueText);
std::vector<int> list = theStudents.m_ageIndex[key];
for(int i = 0; i < list.size(); i++)
DisplayStudent(list[i],i);
}
else if(m_searchIndex == 5)
{
double key = atof(m_valueText);
std::vector<int> list = theStudents.m_gpaIndex[key];
for(int i = 0; i < list.size(); i++)
DisplayStudent(list[i],i);
}
}
void CStudentInformationSystemDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}
// 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 CStudentInformationSystemDlg::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 CStudentInformationSystemDlg::OnQueryDragIcon()
{
return static_cast<HCURSOR>(m_hIcon);
}
void CStudentInformationSystemDlg::OnBnClickedCancel()
{
// TODO: Add your control notification handler code here
OnCancel();
}
void CStudentInformationSystemDlg::OnBnClickedOk()
{
ShellExecute(NULL, _T("open"), _T("http://www.softwareandfinance.com"),
NULL, NULL, SW_SHOWNORMAL);
OnCancel();
}
void CStudentInformationSystemDlg::OnBnClickedSimulate()
{
theStudents.SimulateRecords();
RefreshData();
}
void CStudentInformationSystemDlg::OnCbnSelchangeKeyCombo()
{
UpdateData(TRUE);
m_valueCtrl.Clear();
m_listCtrl.DeleteAllItems();
while(m_valueCtrl.GetCount() > 0)
m_valueCtrl.DeleteString(0);
if( m_keyText.Compare("All") == 0)
{
m_searchIndex = 0;
}
else if( m_keyText.Compare("Name") == 0)
{
m_searchIndex = 1;
for(std::map<std::string, std::vector<int> >::iterator it = theStudents.m_nameIndex.begin(); it != theStudents.m_nameIndex.end(); ++it)
{
m_valueCtrl.AddString(it->first.c_str());
}
}
else if( m_keyText.Compare("City") == 0)
{
m_searchIndex = 2;
for(std::map<std::string, std::vector<int> >::iterator it = theStudents.m_cityIndex.begin(); it != theStudents.m_cityIndex.end(); ++it)
{
m_valueCtrl.AddString(it->first.c_str());
}
}
else if( m_keyText.Compare("Country") == 0)
{
m_searchIndex = 3;
for(std::map<std::string, std::vector<int> >::iterator it = theStudents.m_countryIndex.begin(); it != theStudents.m_countryIndex.end(); ++it)
{
m_valueCtrl.AddString(it->first.c_str());
}
}
else if( m_keyText.Compare("Age") == 0)
{
m_searchIndex = 4;
for(std::map<int, std::vector<int> >::iterator it = theStudents.m_ageIndex.begin(); it != theStudents.m_ageIndex.end(); ++it)
{
char buf[32];
sprintf(buf,"%d", it->first);
m_valueCtrl.AddString(buf);
}
}
else if( m_keyText.Compare("GPA") == 0)
{
m_searchIndex = 5;
for(std::map<double, std::vector<int> >::iterator it = theStudents.m_gpaIndex.begin(); it != theStudents.m_gpaIndex.end(); ++it)
{
char buf[32];
sprintf(buf,"%.2lf", it->first);
m_valueCtrl.AddString(buf);
}
}
ShowData();
}
void CStudentInformationSystemDlg::OnCbnSelchangeValueCombo()
{
UpdateData(TRUE);
ShowData();
}
void CStudentInformationSystemDlg::OnBnClickedAdd()
{
CStudent s;
CStudentEditDlg dlg(s, false);
if( dlg.DoModal() == IDOK)
{
theStudents.AddRecord(s);
ShowData();
}
}
void CStudentInformationSystemDlg::OnBnClickedEdit()
{
POSITION pos = m_listCtrl.GetFirstSelectedItemPosition();
if (pos != NULL)
{
while (pos)
{
int nItem = m_listCtrl.GetNextSelectedItem(pos);
int idx = atoi(m_listCtrl.GetItemText(nItem, 0)) - 1;
CStudent &s = theStudents.m_studList[idx];
CStudentEditDlg dlg(s, true);
if( dlg.DoModal() == IDOK)
{
theStudents.WriteRecords();
ShowData();
}
}
}
}
void CStudentInformationSystemDlg::OnBnClickedDelete()
{
POSITION pos = m_listCtrl.GetFirstSelectedItemPosition();
if (pos != NULL)
{
while (pos)
{
int nItem = m_listCtrl.GetNextSelectedItem(pos);
int idx = atoi(m_listCtrl.GetItemText(nItem, 0)) - 1;
int ptr = 0;
for(std::vector<CStudent>::iterator it = theStudents.m_studList.begin(); it != theStudents.m_studList.end(); ++it)
{
if(ptr == idx)
{
theStudents.m_studList.erase(it);
break;
}
ptr++;
}
theStudents.WriteRecords();
ShowData();
}
}
}
void CStudentInformationSystemDlg::OnBnClickedDeleteAll()
{
theStudents.m_studList.clear();
theStudents.WriteRecords();
RefreshData();
}
void CStudentInformationSystemDlg::OnHdnItemdblclickList1(NMHDR *pNMHDR, LRESULT *pResult)
{
LPNMHEADER phdr = reinterpret_cast<LPNMHEADER>(pNMHDR);
*pResult = 0;
}
void CStudentInformationSystemDlg::OnNMDblclkList1(NMHDR *pNMHDR, LRESULT *pResult)
{
OnBnClickedEdit();
*pResult = 0;
}
Click here to download the VS 2005 Project file and executable
Output
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