logindlg.cpp

mfc编的一个图书馆图书管理系统

// LoginDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Library.h"
#include "LoginDlg.h"
#include "AdnLog.h"
#include "clerkset.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CLoginDlg dialog


CLoginDlg::CLoginDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CLoginDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CLoginDlg)
	m_strName = _T("");
	m_strPassword = _T("");
	//}}AFX_DATA_INIT
	m_bSuccess = FALSE;
	m_strUSERID = _T("");
	count=0;
}


void CLoginDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CLoginDlg)
	DDX_Text(pDX, IDC_LOGIN_NAME, m_strName);
	DDV_MaxChars(pDX, m_strName, 8);
	DDX_Text(pDX, IDC_LOGIN_PASSWORD, m_strPassword);
	DDV_MaxChars(pDX, m_strPassword, 8);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CLoginDlg, CDialog)
	//{{AFX_MSG_MAP(CLoginDlg)
	ON_BN_CLICKED(IDC_CONFIRM, OnConfirm)
	ON_BN_CLICKED(IDC_CANCEL, OnCancel)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CLoginDlg message handlers

void CLoginDlg::OnConfirm() 
{
	UpdateData();
	if(m_strName.IsEmpty())
	{
		MessageBox("请输入用户名","登陆系统",MB_OK|MB_ICONEXCLAMATION);
		UpdateData(TRUE);
		return;
	}
	if(!m_database.IsOpen())
	{
		if(!m_database.Open(_T("book")))
		{
           MessageBox("连接数据库失败","图书管理系统",MB_OK|MB_ICONINFORMATION);
		   return;
		}
	}
	CAdnLog *m_pLogset=new CAdnLog(&m_database);
	CString strSQL;
    strSQL.Format("select * from adm where username='%s' AND password='%s'",m_strName,m_strPassword);
	m_pLogset->Open(AFX_DB_USE_DEFAULT_TYPE,strSQL);
	if(m_pLogset->GetRecordCount()==0)
	{
		
		if(count<5)
		{
			
			MessageBox("登陆失败","图书管理系统",MB_OK|MB_ICONERROR);
			count++;
			m_strName.Empty();
			m_strPassword.Empty();
			UpdateData(FALSE);
		}
		else
		{
			m_database.Close();
			MessageBox("登陆超过五次,请与管理员联系","图书管理系统");
			OnOK();
		}
	}
	else
	{
		m_bSuccess = TRUE;
		m_database.Close();
        CDialog::OnOK();
	}	
	
	
}

void CLoginDlg::OnCancel() 
{
	
	CDialog::OnCancel();	
}