USES_CONVERSION;
CComPtr<IDispatch> cnn;
HRESULT hResult = E_FAIL;
CLSID clsid;
hResult=CLSIDFromProgID(A2W("ADODB.Connection"), &clsid);
hResult=CoCreateInstance(clsid,NULL,CLSCTX_INPROC_SERVER, IID_IDispatch, (void**)&cnn);
DISPID dispid;
LPWSTR oopen=A2W("Open");
hResult=cnn->GetIDsOfNames(IID_NULL,&oopen,1,LOCALE_USER_DEFAULT,&dispid);
DISPPARAMS dispparams;
memset(&dispparams, 0, sizeof(dispparams));
dispparams.cArgs = 4;
dispparams.rgvarg = new VARIANT[4];
dispparams.cNamedArgs =0;
dispparams.rgvarg[0].vt = VT_BSTR;
dispparams.rgvarg[0].bstrVal =L"DRIVER={Microsoft Access Driver (*.mdb)};dbq=C:\\MYCAI\\DATA\\MYCAI.MDB";
dispparams.rgvarg[1].vt = VT_BSTR;
dispparams.rgvarg[1].bstrVal =L"";
dispparams.rgvarg[2].vt = VT_BSTR;
dispparams.rgvarg[2].bstrVal =L"ghhyEDTFT346Sbftr";
dispparams.rgvarg[3].vt = VT_I4;
dispparams.rgvarg[3].lVal =-1;
hResult = cnn->Invoke(dispid, IID_NULL, LOCALE_SYSTEM_DEFAULT,
DISPATCH_METHOD,
&dispparams,NULL,NULL,NULL);
delete[] dispparams.rgvarg;invoke的结果总是"发生意外"
CComPtr<IDispatch> cnn;
HRESULT hResult = E_FAIL;
CLSID clsid;
hResult=CLSIDFromProgID(A2W("ADODB.Connection"), &clsid);
hResult=CoCreateInstance(clsid,NULL,CLSCTX_INPROC_SERVER, IID_IDispatch, (void**)&cnn);
DISPID dispid;
LPWSTR oopen=A2W("Open");
hResult=cnn->GetIDsOfNames(IID_NULL,&oopen,1,LOCALE_USER_DEFAULT,&dispid);
DISPPARAMS dispparams;
memset(&dispparams, 0, sizeof(dispparams));
dispparams.cArgs = 4;
dispparams.rgvarg = new VARIANT[4];
dispparams.cNamedArgs =0;
dispparams.rgvarg[0].vt = VT_BSTR;
dispparams.rgvarg[0].bstrVal =L"DRIVER={Microsoft Access Driver (*.mdb)};dbq=C:\\MYCAI\\DATA\\MYCAI.MDB";
dispparams.rgvarg[1].vt = VT_BSTR;
dispparams.rgvarg[1].bstrVal =L"";
dispparams.rgvarg[2].vt = VT_BSTR;
dispparams.rgvarg[2].bstrVal =L"ghhyEDTFT346Sbftr";
dispparams.rgvarg[3].vt = VT_I4;
dispparams.rgvarg[3].lVal =-1;
hResult = cnn->Invoke(dispid, IID_NULL, LOCALE_SYSTEM_DEFAULT,
DISPATCH_METHOD,
&dispparams,NULL,NULL,NULL);
delete[] dispparams.rgvarg;invoke的结果总是"发生意外"
解决方案 »
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