各位高手:我的数据库已经连接正确了但是始终提示在这一句m_pRs->Open((LPCTSTR)m_strCTt,(LPCTSTR)m_strCnt,
adOpenDynamic,adLockOptimistic,adCmdUnknown);
上出现问题,欢乐很多种方式都不行!请问如何解决?
另外,m_pRs->Open();这个函数在输入m_pRs->时无法发现open这个函数,是什么原因?
m_strCnt=_T("Driver={SQL Server};server=YL;database=sdjf");
m_strCTt=_T("Select * from yonghu");
m_pRs=NULL;
m_piAdoRecordBinding=NULL; ::CoInitialize(NULL); try
{
m_pRs.CreateInstance(__uuidof(Recordset)); m_pRs->Open((LPCTSTR)m_strCTt,(LPCTSTR)m_strCnt,
adOpenDynamic,adLockOptimistic,adCmdUnknown); if (FAILED(m_pRs->QueryInterface(__uuidof(IADORecordBinding),
(LPVOID*)&m_piAdoRecordBinding)))
_com_issue_error(E_NOINTERFACE); m_piAdoRecordBinding->BindToRecordset(&m_rsRecSet); }
adOpenDynamic,adLockOptimistic,adCmdUnknown);
上出现问题,欢乐很多种方式都不行!请问如何解决?
另外,m_pRs->Open();这个函数在输入m_pRs->时无法发现open这个函数,是什么原因?
m_strCnt=_T("Driver={SQL Server};server=YL;database=sdjf");
m_strCTt=_T("Select * from yonghu");
m_pRs=NULL;
m_piAdoRecordBinding=NULL; ::CoInitialize(NULL); try
{
m_pRs.CreateInstance(__uuidof(Recordset)); m_pRs->Open((LPCTSTR)m_strCTt,(LPCTSTR)m_strCnt,
adOpenDynamic,adLockOptimistic,adCmdUnknown); if (FAILED(m_pRs->QueryInterface(__uuidof(IADORecordBinding),
(LPVOID*)&m_piAdoRecordBinding)))
_com_issue_error(E_NOINTERFACE); m_piAdoRecordBinding->BindToRecordset(&m_rsRecSet); }
一个是警告: adCreateStructDoc = -2147483648,
warning C4146: unary minus operator applied to unsigned type, result still unsigned
还有一个错误
error C2440: 'type cast' : cannot convert from 'class CString' to 'struct IDispatch *'
请问这两个是什么原因造成的?特别是那个警告!每次调试都出现!