logindlg.cpp

中国象棋的课程设计

// LoginDLG.cpp : implementation file
//
#import "c:\program files\common files\system\ado\msado15.dll"\no_namespace\rename("EOF", "adoEOF")
#include "iostream.h"
#include "stdafx.h"
#include "chess.h"
#include "ChessDlg.h"
#include "LoginDLG.h"

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

/////////////////////////////////////////////////////////////////////////////
// CLoginDLG dialog

CDatabase db;
CLoginDLG::CLoginDLG(CWnd* pParent /*=NULL*/)
	: CDialog(CLoginDLG::IDD, pParent)
{
	//{{AFX_DATA_INIT(CLoginDLG)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
}



void CLoginDLG::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CLoginDLG)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CLoginDLG, CDialog)
	//{{AFX_MSG_MAP(CLoginDLG)
	ON_BN_CLICKED(IDM_EXIT, OnCancel)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CLoginDLG message handlers

void CLoginDLG::OnOK() 
{
 
  //   TODO:   Add   extra   validation   here   
 UpdateData();
 CString Username;
 CString Password;
 GetDlgItem(IDC_EDIT1)->GetWindowText(Username);
 GetDlgItem(IDC_EDIT2)->GetWindowText(Password);
if(strlen(Username) <= 0){
  MessageBox("用户名不能为空!");
  return;
 }
if(strlen(Password) <= 0){
  MessageBox("密码不能为空!");
  return;
 }

CString m_strUserName,m_strPass;
CString strSql;
strSql.Format("SELECT username,password FROM user_Info WHERE username='%s'",Username);
if(!db.OpenEx("DSN=chess;UID=;PWD=")) return;
CRecordset rs(&db);
rs.Open(CRecordset::forwardOnly,strSql);
if(!rs.IsEOF())
{
rs.GetFieldValue("username",m_strUserName);
rs.GetFieldValue("password",m_strPass);
}
rs.Close();
db.Close();
if(Password==m_strPass)	
EndDialog(IDOK);
else 
{
	MessageBox("用户名或密码错误","信息提示",MB_ICONWARNING);
	rs.Close();
	db.Close();
}
	
}


void CLoginDLG::OnCancel() 
{
	// TODO: Add your control notification handler code here
	CDialog::OnCancel();
}