在ctor和智能指针中引发异常

在我的构造函数中使用以下代码可以将XML文档加载到成员变量中吗?如果有任何问题,将其抛出给调用方:

   MSXML2::IXMLDOMDocumentPtr m_docPtr; //member


Configuration()
{
    try
    {                      
        HRESULT hr = m_docPtr.CreateInstance(__uuidof(MSXML2::DOMDocument40));     

         if ( SUCCEEDED(hr))
         {
            m_docPtr->loadXML(CreateXML());
         }
         else
         {
            throw MyException("Could not create instance of Dom");
          }
    }
    catch(...)
    {
         LogError("Exception when loading xml");
         throw;
    }

}

基于Scott Myers RAII实现,在更有效的C++中,如果他省略了任何资源,即指针:

BookEntry::BookEntry(const string& name,
                 const string& address,
                 const string& imageFileName,
                 const string& audioClipFileName)
: theName(name), theAddress(address),
  theImage(0), theAudioClip(0)
{
  try {                            // this try block is new
    if (imageFileName != "") {
      theImage = new Image(imageFileName);
    }

  if (audioClipFileName != "") {
      theAudioClip = new AudioClip(audioClipFileName);
    }
  }
  catch (...) {                      // catch any exception


    delete theImage;                 // perform necessary
    delete theAudioClip;             // cleanup actions


    throw;                           // propagate the exception
  }
}

我相信我在使用智能指针(ixmldomdocumentptr)时允许从ctor抛出异常是正确的。

告诉我你的想法……