_ConnectionPtr pMyConnect=NULL;
HRESULT hr=pMyConnect.CreateInstance(__uuidof(Connection)));
if(FAILED(hr))return; 这个connection怎么初始化
HRESULT hr=pMyConnect.CreateInstance(__uuidof(Connection)));
if(FAILED(hr))return; 这个connection怎么初始化
HRESULT hr=pMyConnect.CreateInstance("ADODB.Connection");
CoInitialize(NULL)
_RecordsetPtr pRs("ADODB.Recordset");
_ConnectionPtr pConn("ADODB.Connection" );
pConn->ConnectionString = chDataSource;
pConn->Provider = _T("Microsoft.Jet.OLEDB.4.0");
strSqlSentence = _T("select * from deal_info"); try
{
pConn->Open((_bstr_t)strSql, "", "", adModeUnknown);
......
}
::CoInitialize(NULL);