login.cpp

一个简单的银行管理程序 VC++实现

// Login.cpp : implementation file
//

#include "stdafx.h"
#include "BankSystem.h"
#include "Login.h"
#include "BankSystemDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CLogin dialog


CLogin::CLogin(CWnd* pParent /*=NULL*/)
	: CDialog(CLogin::IDD, pParent)
{
	//{{AFX_DATA_INIT(CLogin)
	m_strUser = _T("");
	m_strPassW = _T("");
	//}}AFX_DATA_INIT
}


void CLogin::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CLogin)
	DDX_Text(pDX, IDC_EDIT1, m_strUser);
	DDX_Text(pDX, IDC_EDIT2, m_strPassW);
	//}}AFX_DATA_MAP
}


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

/////////////////////////////////////////////////////////////////////////////
// CLogin message handlers

void CLogin::OnOK() 
{
	// TODO: Add extra validation here

	BOOL flag=true;
	UpdateData(true);
	if(m_strUser.IsEmpty()||m_strPassW.IsEmpty())
		AfxMessageBox("请填写详细信息");		
	else
	{
		CString  strSQL,m_strRealPassW;	
		_variant_t varPower;
		strSQL="SELECT * FROM Admin where 账号=";
		strSQL+=m_strUser;
		m_pRec.CreateInstance(__uuidof(Recordset));
		m_pRec->Open(_variant_t(strSQL),m_pCon.GetInterfacePtr(),adOpenDynamic,adLockOptimistic,adCmdText);
		if(m_pRec->adoEOF)
		{
			AfxMessageBox("不存在此账号!");
			return;
		}
		m_strRealPassW=(LPCSTR)_bstr_t(m_pRec->GetCollect("密码"));
		if(m_strRealPassW==m_strPassW)
		{
			CBankSystemApp *App     = (CBankSystemApp*)AfxGetApp();
			CBankSystemDlg *m_pMain = (CBankSystemDlg*)App->m_pMainWnd;
			varPower=m_pRec->GetCollect("权限");
			m_pMain->m_iPower = varPower.intVal;
			m_pMain->m_strOpr = m_strUser;
			AfxMessageBox("登陆成功!");
			CDialog::OnOK();
		}
		else
		{
			AfxMessageBox("密码错误!");
			m_pRec->Close();
			return;
		}
			 
		m_pRec->Close();
	}		

	
//	CDialog::OnOK();
}

BOOL CLogin::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	CBankSystemApp *App = (CBankSystemApp*)AfxGetApp();
	CBankSystemDlg *m_pMain = (CBankSystemDlg*)App->m_pMainWnd;
	m_pCon=m_pMain->m_pConnection;	

	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}