菜鸟问个问题，关于ado的问题！？动态连接库的问题！在线等

[vc_human]

__declspec(dllexport) void apply(char *instr_1,char *instr_2,char *instr_3,char *outstr_1,char *outstr_2,char *outstr_3)
{
CTime currentTime;
_ConnectionPtr pMyConnect=NULL;

HRESULT hr = pMyConnect.CreateInstance(__uuidof(Connection));

----〉 if( FAILED(hr) )
----〉 return;

_bstr_t strConnect="Provider=SQLOLEDB; Server=192.168.168.25;"
"Database=discount_card; uid=sa; pwd=sa;";

//connecting to the database server now:
try{pMyConnect->Open(strConnect,"","",NULL);}

catch (_com_error &e)
{
return;
}


_RecordsetPtr m_pRecordset;

if(!FAILED(m_pRecordset.CreateInstance( __uuidof( Recordset ))))
{
//m_pDoc->m_initialized=FALSE;
return;
}

try
{
m_pRecordset->Open(_variant_t("select * from discount_card"), _variant_t((IDispatch *)pMyConnect,true), adOpenKeyset, adLockOptimistic, adCmdTable);
}
catch (_com_error &e)
{
//afxMessageBox(NULL,"无法打开mytable表。","提示", MB_OK | MB_ICONWARNING);
return;
}

CString thistime,mobile,code;
currentTime=CTime::GetCurrentTime();
thistime.Format("%d-%d-%d %d:%d:%d",currentTime.GetYear(),currentTime.GetMonth(),
currentTime.GetDay(),currentTime.GetHour(),currentTime.GetMinute(),currentTime.GetSecond());
//memcpy(mobile,instr_2);
mobile=CString(instr_2);
//strcpy(code,instr_3);
code=CString(instr_3);
if(!m_pRecordset->Supports(adAddNew)) return;
m_pRecordset->AddNew();
m_pRecordset->Fields->GetItem(_variant_t("custom_time"))->Value=_bstr_t(thistime);
m_pRecordset->Fields->GetItem(_variant_t("mobile_code"))->Value=_bstr_t(mobile);
m_pRecordset->Fields->GetItem(_variant_t("code_id"))->Value=_bstr_t(code);
m_pRecordset->Update();
}

为什么每次运行都会在 if( FAILED(hr) ) return; 弹出。
为什么呢？很急啊。。。。谢谢~~~~，万分感谢！

[erigido]

HRESULT hr = pMyConnect.CreateInstance(__uuidof(Connection));

AfxOleInit();
----〉 if( FAILED(hr) )

[arvid_gs]

少了：AfxOleInit( );

[rwdx]

up

[vc_human]

_RecordsetPtr m_pRecordset;

if(!FAILED(m_pRecordset.CreateInstance( __uuidof( Recordset ))))
{
//m_pDoc->m_initialized=FALSE;
return;
}
现在又从这里弹出去，是不是也要初始化啊？用什么初始化呢？

[yintongshun]

在InitInstance中加入
AfxOleInit( );

[jackwuwei]

加AfxOleInit();

[vc_human]

InitInstance在哪个文件里面啊？？？？？请问，我是一只菜菜菜菜鸟，谢谢

[taianmonkey]

CXXXApp

[vc_human]

可是我写的是动态连接库....我没有找到。。。。

[checkyvc6]

其实不一定是那个地方在你调用HRESULT hr = pMyConnect.CreateInstance(__uuidof(Connection));
之前的地方就可以了