data_disp1.cpp

数据库是存储数据的仓库

// Data_Disp1.cpp : Defines the class behaviors for the application.
//

#include "stdafx.h"
#include "Data_Disp1.h"
#include "Data_Disp1Dlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CData_Disp1App

BEGIN_MESSAGE_MAP(CData_Disp1App, CWinApp)
	//{{AFX_MSG_MAP(CData_Disp1App)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}AFX_MSG
	ON_COMMAND(ID_HELP, CWinApp::OnHelp)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CData_Disp1App construction

CData_Disp1App::CData_Disp1App()
{
	// TODO: add construction code here,
	// Place all significant initialization in InitInstance
}

/////////////////////////////////////////////////////////////////////////////
// The one and only CData_Disp1App object

CData_Disp1App theApp;

/////////////////////////////////////////////////////////////////////////////
// CData_Disp1App initialization

BOOL CData_Disp1App::InitInstance()
{
	AfxEnableControlContainer();

	//自动初始化COM和结束时关闭COM
	AfxOleInit();
	m_pConnection.CreateInstance("ADODB.Connection");
	//-----------------连接数据库----------------------//
	try
	{
		m_pConnection->ConnectionTimeout = 8;
		//连接ACCESS2000
		m_pConnection->Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=DataDisp1.mdb","","",adModeUnknown);
	}
	catch(_com_error e)///捕捉异常
	{
		AfxMessageBox("数据库连接失败!");
		return FALSE;
	} 
	//--------------------------------------------------//
	// Standard initialization
	// If you are not using these features and wish to reduce the size
	//  of your final executable, you should remove from the following
	//  the specific initialization routines you do not need.

#ifdef _AFXDLL
	Enable3dControls();			// Call this when using MFC in a shared DLL
#else
	Enable3dControlsStatic();	// Call this when linking to MFC statically
#endif

	CData_Disp1Dlg dlg;
	m_pMainWnd = &dlg;
	
	int nResponse = dlg.DoModal();
	if (nResponse == IDOK)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with OK
	}
	else if (nResponse == IDCANCEL)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with Cancel
	}

	// Since the dialog has been closed, return FALSE so that we exit the
	//  application, rather than start the application's message pump.
	return FALSE;
}

int CData_Disp1App::ExitInstance() 
{
	// TODO: Add your specialized code here and/or call the base class
	if(m_pConnection->State)
		m_pConnection->Close();
	m_pConnection.Release();	
	return CWinApp::ExitInstance();
}