wxWidgets中使用wxXmlDocument修改结点属性

    wxXmlDocument doc;
    if (!doc.Load(filename,"UTF-8", wxXMLDOC_KEEP_WHITESPACE_NODES))
        return;

    wxXmlNode* root=doc.GetRoot();
    if (root->GetName().Lower() != "root")
        return;

    wxXmlAttribute* attr=root->GetAttributes();
    while(attr)
    {
        if(attr->GetName()=="node1")
        {
            attr->SetValue(“hello”);
        }
        attr=attr->GetNext();
    }
    doc.Save(filename, wxXML_NO_INDENTATION);