请教连接MDB数据库问题

[yeyuanzhi2012]

我是这样写的

BOOL CDBBase::OpenDatabase()
{
	HRESULT hr = S_OK;
m_pConnection.CreateInstance("ADODB.Connection"); 

if( m_pConnection->GetState()==adStateClosed )

m_pConnection->Open("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=ChargeDB.mdb", "","",adModeUnknown); 
}

不知对不对？谢谢！！

[yeyuanzhi2012]

获取数据库的内容

BOOL CDBListen::StartConf(int nConfID,int &nConfType,int &nReturn,char* szCurMCUIP)
{
	VARIANT vtParam;
	_CommandPtr pCmd  = NULL;
	_ParameterPtr  pPrm1  = NULL;
	_ParameterPtr  pPrm2  = NULL;
	_ParameterPtr  pPrm3  = NULL;

	
	CDBInit dbInit;

	if( !OpenDatabase() )
		return false;
	
    try{
        TESTHR(pCmd.CreateInstance(__uuidof(Command)));
		
		pCmd->ActiveConnection = m_pConnection;
		pCmd->CommandText = "Do_ConfStart";
		pCmd->CommandType = adCmdStoredProc;
		pCmd->CommandTimeout = 15;

        pCmd->Parameters->Append( pCmd->CreateParameter("MCUIP", 
            adChar, adParamInput, 15, m_szLocalIPAddr) );
		
		vtParam.vt = VT_I4;
		vtParam.lVal = nConfID;
        pCmd->Parameters->Append( pCmd->CreateParameter("ConfID", 
            adInteger, adParamInput, 4, vtParam) );
		
		TESTHR(pPrm1.CreateInstance(__uuidof(Parameter)));
		pPrm1->Type = adInteger;
		pPrm1->Size = 4;
		pPrm1->Direction = adParamOutput;
		pCmd->Parameters->Append(pPrm1);
	
		TESTHR(pPrm2.CreateInstance(__uuidof(Parameter)));
		pPrm2->Type = adInteger;
		pPrm2->Size = 4;
		pPrm2->Direction = adParamOutput;
		pCmd->Parameters->Append(pPrm2);

		TESTHR(pPrm3.CreateInstance(__uuidof(Parameter)));
		pPrm3->Type = adVarChar;
		pPrm3->Size = 15;
		pPrm3->Direction = adParamOutput;
		pCmd->Parameters->Append(pPrm3);
		
        pCmd->Execute(NULL,NULL,adCmdStoredProc);

		vtParam = pPrm1->Value;
		nConfType = vtParam.lVal;
		
		vtParam = pPrm2->Value;
		nReturn = vtParam.lVal;

		_bstr_t temp(pPrm3->Value);
		strcpy(szCurMCUIP,temp);
		
    }catch(_com_error &e){
		
		CloseDatabase();

		LOG_Write(g_hLog,"CDBListen::StartConf failed:%s",e.ErrorMessage());
		return false;
    }
	return true;
}

[yeyuanzhi2012]

但获取不了，不知怎么回事？

[yeyuanzhi2012]

没人知道吗?

[hdg3707]

AfxOleInit();