请问连接MDB数据库有关问题

请教连接MDB数据库问题
我是这样写的

C/C++ code

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); }