logdlg.cpp

来自「一个简单的公交查询管理系统」· C++ 代码 · 共 91 行

// LogDlg.cpp : implementation file
//

#include "stdafx.h"
#include "BusQuery.h"
#include "LogDlg.h"
#include "DB_Func.h"
#include <odbcinst.h>


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


extern SQLHENV henv;
extern SQLHDBC hdbc;
extern SQLHSTMT hstmt;
/////////////////////////////////////////////////////////////////////////////
// CLogDlg dialog


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


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


BEGIN_MESSAGE_MAP(CLogDlg, CDialog)
	//{{AFX_MSG_MAP(CLogDlg)
	ON_BN_CLICKED(IDC_LOG_ENTER, OnLogEnter)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CLogDlg message handlers

BOOL CLogDlg::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	// 打开数据库
	int rv;
	rv = DB_Open(&henv,&hdbc,&hstmt);
	
	if( rv != 0 )
    { 
		rv = SQLConfigDataSource(NULL, ODBC_ADD_SYS_DSN, "Microsoft Access Driver (*.mdb)", "DSN=busquery\0UID=sa\0PWD=sa\0DBQ=.\\db.mdb\0Description=公交系统数据源");
		if( !rv )
		{
			AfxMessageBox("初始化数据源失败，无法连接数据库，本系统无法正常运行，将退出系统！");
			CDialog::OnCancel();
			return FALSE;
		}
		else
		{
			rv = DB_Open(&henv,&hdbc,&hstmt);
			if( rv != 0 )
			{
				AfxMessageBox("打开数据源失败，无法进入系统，请检查数据库与可执行文件是否在同一目录下，然后重启系统！");
				return FALSE;
			}
		}
		
	}
   CDialog::OnOK();
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CLogDlg::OnLogEnter() 
{
	// TODO: Add your control notification handler code here
	CDialog::OnOK();
}