Hi,

I'm developping an app on windows which tooltips French news by the system tray.

After succesfully developped the functions that read xml files and fill them, I wanna download the rss file of lemonde.fr (which u know is a xml file) to add the last news in the local xml file.

I tried to do all necessary work for downloading that file but I have a "Unknown error" with reply->errorString(); and then the program crashes.

Here is the principal code :

Qt Code: 
  1. Window::Window()
  2. {
  3.     AppVars::urlRSSlist << "http://rss.lemonde.fr/c/205/f/3050/index.rss";
  4.     AppVars::netManList<< new QNetworkAccessManager(this);
  5.     QObject::connect (AppVars::netManList[0], SIGNAL(finished(QNetworkReply*)), this, SLOT(downloadedRSSalaune(QNetworkReply*))) ;
  6.     for(int i=0;i<AppVars::urlRSSlist.size();i++){
  7.         qDebug() << "enter for loop for i = "+QString::number(i);
  8.         AppVars::netManList[i]->get(QNetworkRequest(QUrl(AppVars::urlRSSlist[i])));
  9.     }
  10.  
  11. }
  12.  
  13. void Window::downloadedRSSalaune(QNetworkReply* reply){
  14.  
  15.     qDebug() << reply->errorString();
  16.  
  17.     QByteArray data =QByteArray(reply->readAll());
  18.  
  19.     QList<QString> titleList;
  20.     QList<QString> linkList;
  21.     QDomDocument *domfile = new QDomDocument("alaune_xml");
  22.     if(!(domfile->setContent(data))){
  23.         return;
  24.     }
  25.  
  26.     QDomNode principalNode = domfile->documentElement();
  27.     QDomNode channelNode = principalNode.namedItem("rss").namedItem("channel");
  28.     QDomNodeList listItems = channelNode.childNodes();
  29.  
  30.     int k = 0;
  31.     int i = 0;
  32.     while(k<10 && i<listItems.length()){
  33.         if(listItems.at(i).nodeName() == "item"){
  34.             qDebug() << listItems.at(i).namedItem("title").toElement().text();
  35.             titleList << listItems.at(i).namedItem("title").toElement().text();
  36.             linkList << listItems.at(i).namedItem("link").toElement().text();
  37.             ++k;
  38.         }
  39.         ++i;
  40.     }
  41.  
  42.     firstInsert10ArticlesXML(titleList, linkList, "alaune");
  43.  
  44.     tooltipInstantNews("DirectNews France","Les articles sont maintenant à jours.","");
  45. }
  46.  
  47.  
  48. void Window::firstInsert10ArticlesXML(QList<QString> titles, QList<QString> links, QString cat)
  49. {
  50.     QString filepath = QCoreApplication::applicationDirPath();
  51.     filepath.append("\\history.xml");
  52.     AppFiles::historyXML->setFileName(filepath);
  53.  
  54.     if(!(AppFiles::historyXML->open(QIODevice::ReadOnly))){
  55.         return;
  56.     }
  57.  
  58.     // QDomDocument to parse xml file
  59.     QDomDocument *domfile = new QDomDocument("history_xml");
  60.     if(!(domfile->setContent(AppFiles::historyXML))){
  61.         return;
  62.     }
  63.     AppFiles::historyXML->close();
  64.  
  65.     QList<QDomElement *> newItems;
  66.     for(int i = 0; i<10; i++){
  67.         newItems<<new QDomElement(domfile->createElement("item"));
  68.  
  69.         QDomElement titleSubItem = domfile->createElement("title");
  70.         QDomText titleText = domfile->createTextNode(titles[i]);
  71.         QDomElement linkSubItem = domfile->createElement("link");
  72.         QDomText linkText = domfile->createTextNode(links[i]);
  73.  
  74.         titleSubItem.appendChild(titleText);
  75.         linkSubItem.appendChild(linkText);
  76.         newItems[i]->appendChild(titleSubItem);
  77.         newItems[i]->appendChild(linkSubItem);
  78.     }
  79.  
  80.     QDomNode principalNode = domfile->documentElement();
  81.  
  82.     QDomNode catNode = principalNode.namedItem(cat);
  83.  
  84.     if(catNode.isNull())
  85.         return;
  86.  
  87.     for(int i = 0; i<10; i++){
  88.         catNode.insertBefore(*newItems[i],catNode.firstChild());
  89.     }
  90.  
  91.     QString write_doc = domfile->toString();
  92.  
  93.     if(!(AppFiles::historyXML->open(QIODevice::WriteOnly))){
  94.         return;
  95.     }
  96.  
  97.     AppFiles::historyXML->resize(0);
  98.     QTextStream stream(AppFiles::historyXML);
  99.     stream << write_doc;
  100.     AppFiles::historyXML->close();
  101.  
  102.     ReadXML();
  103. }
  104.  
  105. void Window::ReadXML()
  106. {
  107.     QString filepath = QCoreApplication::applicationDirPath();
  108.     filepath.append("\\history.xml");
  109.     AppFiles::historyXML->setFileName(filepath);
  110.  
  111.     if(!(AppFiles::historyXML->open(QIODevice::ReadOnly))){
  112.         return;
  113.     }
  114.  
  115.     // QDomDocument to parse xml file
  116.     QDomDocument *domfile = new QDomDocument("history_xml");
  117.     if(!(domfile->setContent(AppFiles::historyXML))){
  118.         return;
  119.     }
  120.     AppFiles::historyXML->close();
  121.  
  122.     QDomNode principalNode = domfile->documentElement();
  123.  
  124.     QList<QDomNode> listNodes;
  125.     listNodes<<principalNode.namedItem("alaune")<<principalNode.namedItem("monde")<<principalNode.namedItem("politique")<<principalNode.namedItem("societesante")
  126.                <<principalNode.namedItem("economie")<<principalNode.namedItem("science")<<principalNode.namedItem("art")<<principalNode.namedItem("sport")
  127.                  <<principalNode.namedItem("people");
  128.  
  129.     for(int k=0;k<9;k++){
  130.         QDomNode item = listNodes[k].firstChild();
  131.         int i = 0;
  132.         while(!listNodes[k].isNull() && !item.isNull() && i<10){
  133.             //for each article found, enable the QAction, and attribute text and link
  134.             listArticles[k][i]->setEnabled(true);
  135.             QString titleTrunc = item.namedItem("title").toElement().text();
  136.             if(titleTrunc.size() > 50)
  137.                 titleTrunc = titleTrunc.left(50).append("...");
  138.             listArticles[k][i]->setText(titleTrunc);
  139.             AppVars::listShortcuts[k][i] = item.namedItem("link").toElement().text();
  140.             ++i;
  141.             item = item.nextSibling();
  142.         }
  143.     }
  144. }
  145.  
  146. void Window::tooltipInstantNews(QString title, QString categorie, QString url)
  147. {
  148.     // recieved from getrssthread.cpp, show directly (no use of any xml file) the news and attribute system tray message link
  149.     sticon->setToolTip(categorie+" : \n"+title);
  150.     AppVars::shortcutMessage = url;
  151.     if(AppVars::NotifBool)
  152.         sticon->showMessage(categorie,title,QSystemTrayIcon::Information);
  153.  
  154. }
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I may have to put some if(!ERROR) but I don't know where and how.

Window class derivates from QWidget
AppVars::urlRSSlist is a QList<String> (global var)
AppVars::netManList is a QList<QNetworkAccessManager*> (global var)

if something not clear, please tell me.

Thank u in advance for your help.