swbdlg.cpp

一个简单的学生信息管理系统

// swbDlg.cpp : implementation file
//

#include "stdafx.h"
#include "swb.h"
#include "swbDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CSwbDlg dialog

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

void CSwbDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSwbDlg)
	DDX_Text(pDX, IDC_EDIT1, m_user);
	DDX_Text(pDX, IDC_EDIT2, m_password);
	//}}AFX_DATA_MAP
}

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

/////////////////////////////////////////////////////////////////////////////
// CSwbDlg message handlers

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

	LOGFONT LogFont;
	GetFont()->GetLogFont(&LogFont);
	LogFont.lfHeight+=LogFont.lfHeight;
	LogFont.lfWidth+=LogFont.lfWidth;
	m_font.CreateFontIndirect(&LogFont);
	GetDlgItem(IDC_STATIC_LOG)->SetFont(&m_font);

	LOGFONT LogFont1;
	GetFont()->GetLogFont(&LogFont1);
	LogFont1.lfHeight+=LogFont1.lfHeight/2;
	LogFont1.lfWidth+=LogFont1.lfWidth/2;
	m_font1.CreateFontIndirect(&LogFont1);
	GetDlgItem(IDC_STATIC_TEXT1)->SetFont(&m_font1);

	LOGFONT LogFont2;
	GetFont()->GetLogFont(&LogFont2);
	LogFont2.lfHeight+=LogFont2.lfHeight/2;
	LogFont2.lfWidth+=LogFont2.lfWidth/2;
	m_font2.CreateFontIndirect(&LogFont2);
	GetDlgItem(IDC_STATIC_TEXT2)->SetFont(&m_font2);	


	

	// 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 CSwbDlg::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 CSwbDlg::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 CSwbDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}
#include "Studentdlg.h"



int count=0;
int flag=0;
void CSwbDlg::OnOK() 
{


	UpdateData(true);	
	if(m_user.IsEmpty() || m_password.IsEmpty())  
	{
		AfxMessageBox("请输入用户名和密码~!");
	}
	else
	{
		CString sql="SELECT * FROM mima where 账号='"+m_user+"' and 密码='"+m_password+"'";
		try
		{	
			
			m_pConnection.CreateInstance(__uuidof(Connection));
			m_pRecordset.CreateInstance(__uuidof(Recordset));
            m_pConnection->Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=swb.mdb","","",adModeUnknown);
		    m_pRecordset->Open((_variant_t)sql,m_pConnection.GetInterfacePtr(),adOpenDynamic,adLockOptimistic,adCmdText);

				
			if(count<3)
			{
				if(m_pRecordset->adoEOF)	 //如果没有此用户和密码
				{
					MessageBox("请输入正确的用户名和密码!","错误",MB_ICONEXCLAMATION);
					count++;
					m_user.Empty();
					m_password.Empty();
					UpdateData(false);
				

//					SetDlgItemText(IDC_EDIT1,"");
//					SetDlgItemText(IDC_EDIT2,"");
					GetDlgItem(IDC_EDIT1)->SetFocus();
				
				}
				else
				{
					
					CStudentdlg dlg;
					dlg.DoModal();	
					CDialog::OnOK();
				}
			}
			else
			{
				AfxMessageBox("Too Many Trials~!");
				CDialog::OnOK();
			}
		}
		catch (_com_error* e)								
		{													
			AfxMessageBox(e->ErrorMessage());;
			return;
		}
	}	

}

void CSwbDlg::OnDestroy() 
{
	CDialog::OnDestroy();
//  m_pRecordset->Close();
//  m_pConnection->Close();
//	m_pRecordset=NULL;
//	m_pConnection=NULL;
	
}