denglu.cpp

一个小型的图书管理系统,用到了access数据库,其中有三种权限的用户登陆这个系统,每种用户将拥有不同的权限,用户密码和帐户打开程序中的access便可知道.

// DengLu.cpp : implementation file
//

#include "stdafx.h"
#include "Book.h"
#include "DengLu.h"

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

/////////////////////////////////////////////////////////////////////////////
// CDengLu dialog


CDengLu::CDengLu(CWnd* pParent /*=NULL*/)
	: CDialog(CDengLu::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDengLu)
	m_mima = _T("");
	m_Yonghu = _T("");
	//}}AFX_DATA_INIT
}


void CDengLu::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDengLu)
	DDX_Control(pDX, IDOK, m_ok);
	DDX_Control(pDX, IDCANCEL, m_cancel);
	DDX_Text(pDX, IDC_MiMa, m_mima);
	DDV_MaxChars(pDX, m_mima, 100);
	DDX_Text(pDX, IDC_YonHu, m_Yonghu);
	DDV_MaxChars(pDX, m_Yonghu, 225);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CDengLu, CDialog)
	//{{AFX_MSG_MAP(CDengLu)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDengLu message handlers

void CDengLu::OnOK() 
{
	// TODO: Add extra validation here
	UpdateData(TRUE);
	m_Set->MoveFirst();
	while(!m_Set->IsEOF()){
		if(m_Yonghu==m_Set->m_column1 && m_mima==m_Set->m_column2)
		{
			theApp.Name=m_Yonghu;
			theApp.mima=m_mima;
			theApp.quanxian=m_Set->m_column3;
			CDialog::OnOK();
			break;
		}
		m_Set->MoveNext();
	}
    if(m_Set->IsEOF())
		AfxMessageBox("用户名或密码错误!");
	else
		m_Set->Close();
	UpdateData(FALSE);
}

BOOL CDengLu::OnInitDialog() 
{
	CDialog::OnInitDialog();
	m_Set=new CDLDateSouce(&theApp.m_DB);
	m_Set->Open();
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}