databasedlg.cpp

用VC+ADO+ACCESS 做的学生管理系统

// DataBaseDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DataBase.h"
#include "DataBaseDlg.h"
#include "MainDlg.h"
#include "UserPassSet.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDataBaseDlg dialog

CDataBaseDlg::CDataBaseDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDataBaseDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDataBaseDlg)
	m_name = _T("");
	m_pass = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CDataBaseDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDataBaseDlg)
	DDX_Text(pDX, IDC_EDIT_NAME, m_name);
	DDX_Text(pDX, IDC_EDIT_PASS, m_pass);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDataBaseDlg, CDialog)
	//{{AFX_MSG_MAP(CDataBaseDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDataBaseDlg message handlers

BOOL CDataBaseDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
		count=1;
	if(!m_database.IsOpen())
	{
		if(!m_database.Open(_T("data")))
			ASSERT("不能打开到该数据源的连接！");
	}
	// 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
	
	// TODO: Add extra initialization here

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

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

		SendMessage(WM_ICONERASEBKGND, (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 to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CDataBaseDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CDataBaseDlg::OnOK() 
{
	// TODO: Add extra validation here
	CUserPassSet *m_recordset=new CUserPassSet(&m_database);
	CString strSQL;
	UpdateData(TRUE);
	strSQL.Format("select * from User where Username='%s' AND Userpass='%s'",m_name,m_pass);
	m_recordset->Open(AFX_DB_USE_DEFAULT_TYPE,strSQL);
	if(m_recordset->GetRecordCount()==0){
		if(count<3){
			MessageBox("请重新登录!");
			count++;
		}
		else{
			MessageBox("请重新核对后再登录!");
			m_database.Close();
			CDialog::OnOK();
		}
	}
	else{
		m_database.Close();
		user.Format("%s",m_name);
		CMainDlg m_Main;
		m_Main.user.Format("%s",m_name);
		m_Main.m_database.Open(_T("data"));
		m_Main.DoModal();
		CDialog::OnOK();
	}
}