VC2010 _com_error 返回的错误信息

 1 CString GetComError(const _com_error& e)
 2 {
 3     CString sMsg;
 4     sMsg.Format(
 5         _T("HRESULT: 0x%08lx; Error: %s"),
 6         e.Error(),
 7         e.ErrorMessage()
 8         );
 9 
10     if(e.ErrorInfo())
11     {
12         sMsg += TEXT("\nSource: ") + CString((LPCTSTR)e.Source()) +
13             TEXT("; Description: ") + CString((LPCTSTR)e.Description());
14     }
15 
16     return sMsg;
17 }

 1     try
 2     {
 3         m_pConnection->Open((_bstr_t)lpszConnectString,"","",adModeUnknown);
 4     }
 5     catch (_com_error &e)
 6     {
 7         m_strErrorString.Format("%s:%s",e.ErrorMessage(),(LPCTSTR)e.Description());
 8         AfxMessageBox(m_strErrorString);
 9         return false;
10     }