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// DBQuery.cpp : Defines the class behaviors for the application.
//
#include "stdafx.h"
#include "DBQuery.h"
#include "DBQueryDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CDBQueryApp
BEGIN_MESSAGE_MAP(CDBQueryApp, CWinApp)
//{{AFX_MSG_MAP(CDBQueryApp)
// 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()
/////////////////////////////////////////////////////////////////////////////
// CDBQueryApp construction
CDBQueryApp::CDBQueryApp()
{
// TODO: add construction code here,
// Place all significant initialization in InitInstance
}
/////////////////////////////////////////////////////////////////////////////
// The one and only CDBQueryApp object
CDBQueryApp theApp;
/////////////////////////////////////////////////////////////////////////////
// CDBQueryApp initialization
BOOL CDBQueryApp::InitInstance()
{
AfxEnableControlContainer();
AfxOleInit();///初始化COM库
HRESULT hr;
hr=m_pConnection.CreateInstance("ADODB.Connection");
if (FAILED(hr)) return FALSE;
try
{
hr=m_pConnection->Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=School.mdb","","",adModeUnknown);
}
catch (_com_error &e)
{
CString errormessage;
errormessage.Format("连接数据库失败!\r\n错误信息:%s",e.ErrorMessage());
AfxMessageBox(errormessage);///显示错误信息
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
CDBQueryDlg 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 CDBQueryApp::ExitInstance()
{
if(m_pConnection->State)
m_pConnection->Close();
return CWinApp::ExitInstance();
}
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