A friend of mine found himself working with IXMLDOMNodeList a bit and was writing out the same iteration code several times long length = 0; ChkHr(list->get_length(&length); for (int index = 0; index < length; index++) { ComPtr<IXMLDOMNode> element; ChkHr(list->get_item(index, &element)); ... } He started to miss range based for loops like this.…

XMLDOMNodeHelper.cpp

class XmlDomNodeListIterator
{
public:
 
    XmlDomNodeListIterator(_In_ IXMLDOMNodeList* list, long index)
        : _list(list), _index(index)
    {}
 
    ComPtr<IXMLDOMNode> operator*() const
    {
        ComPtr<IXMLDOMNode> node;
        ChkHr(_list->get_item(_index, node.GetAddressOf()));
        return node;
    }
 
    XmlDomNodeListIterator& operator++()
    {
        _index++;
        return *this;
    }
 
    bool operator!=(const XmlDomNodeListIterator& other) const
    {
        return (_list != other._list) || (_index != other._index);
    }
 
private:
 
    ComPtr<IXMLDOMNodeList> _list;
    long _index;
 
};
 
XmlDomNodeListIterator begin(_In_ IXMLDOMNodeList* list)
{
    return XmlDomNodeListIterator(list, 0);
}
 
XmlDomNodeListIterator end(_In_ IXMLDOMNodeList* list)
{
    long length = 0;
    ChkHr(list->get_length(&length));
    return XmlDomNodeListIterator(list, length);
}