有做ADO的吗，快来看哟......

Question

这样写代码：
conn->Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=f:\\MyProject\\rms.mdb","","",ADODB::adModeUnknown);
......
pRst->Open("SELECT ALL FROM ZBY",_variant_t((IDispatch*)conn,TRUE),ADODB::adOpenStatic,ADODB::adLockOptimistic,ADODB::adCmdText);有错误信息：IDispatch error #3092
是参数传递有误吗？？

Answer 1

hr = m_Rst->Open(_variant_t(m_strCmd), _variant_t((IDispatch *)m_Con,true),CursorType, LockType, Options);