code090908

void CTestUsbDataDlg::OnBnClickedButton1(){// _bstr_t bstr = m_spGeneric->GetReadDataProvider(lNewDataTag,200);// char *str = bstr;// int tmp = atoi(str);// ((CListBox*)GetDlgItem(IDC_LIST))->AddString(str);_bstr_t bstr = m_spGeneric->GetReadDataProvider(lNewDataTag, 1000);if(bstr.length() > 0){char *str = bstr;long data = atol(str);CString ss;ss.Format(_T("%d"), data);MessageBox(ss, _T("消息"), MB_ICONINFORMATION);}else{MessageBox(_T("字符串是空"), _T("消息"), MB_ICONWARNING);}}

 

//LPSTR ptemp = _com_util::ConvertBSTRToString(*Value); CComBSTR tmpbstr1 = *Value; LPSAFEARRAY arr; HRESULT hr = tmpbstr1.BSTRToArray(&arr); // CString str;// str.Format(L"len of arr %d",arr->cDims);// MessageBox(str,L"test",MB_OK);// BYTE *buf;// SafeArrayAccessData(arr, (void **)&buf);// MessageBox(buf,_T("test"),MB_OK);// // BYTE buf[arr->cDims];// fir(long i=0; i<arr->cDims; i++)// {// ::SafeArrayGetElement(&arr,&i, buf+i);// }// // data = *((long *)(arr->pvData));// // //TCHAR *tmpbstr = W2A(*Value); // CString strMsg; strMsg.Format(_T("Tag:%X [%ld]"), *DataTag,*(long *)Value/**((long *)(arr->pvData))*/, false); ((CListBox*)GetDlgItem(IDC_LIST))->AddString(strMsg);

 

 

  CComBSTR tmpbstr1 = bstr.GetBSTR();  
  LPSAFEARRAY arr;  
  HRESULT hr = tmpbstr1.BSTRToArray(&arr);
  unsigned long ln = arr->rgsabound->cElements;