Quote Originally Posted by rajesh
Is there any example code which read and writes data from/to XML file?
This follow line source fill 14 qlineedit & 5 qcombobox on method:

http://doc.trolltech.com/4.1/qobject.html#findChildren

is the application setting file .....

and inverse / write you can found on http://qtforum.de/forum/viewtopic.php?t=2192


Qt Code: 
  1. void Setting_Gui::ReadConfig()
  2. {
  3.     QString configwget = APPLICATION_SETTING;
  4.     QFile xmlfile(configwget);
  5.     if(!xmlfile.open( QIODevice::ReadOnly ) ) {
  6.      ErrorConfig("");
  7.     }
  8.     QString errorStr, obname, inhalt;
  9.     int errorLine;
  10.     int errorColumn;
  11.  
  12.     QDomDocument doc("http://www.pulitzer.ch/2005/PuliCMS/1.0");
  13.      if (!doc.setContent(&xmlfile,true, &errorStr, &errorLine, &errorColumn)) {
  14.          QString error = (QString("Parse error at line %1, column %2:\n%3")
  15.          .arg(errorLine)
  16.          .arg(errorColumn)
  17.          .arg(errorStr) );
  18.         ErrorConfig(error);
  19.      xmlfile.close();
  20.      }
  21.     QDomElement root = doc.documentElement();
  22.     if( root.tagName() != "setting" ) {
  23.     ErrorConfig("");
  24.     }
  25.     QDomNode n = root.firstChild();
  26.     while( !n.isNull() )
  27.     {
  28.         QDomElement e = n.toElement();
  29.         if( !e.isNull() )
  30.         {
  31.                        for (int i=0;i<textList.size();i++){
  32.                        obname =QString(textList[i]->objectName());
  33.                          if( e.tagName() == obname ) {
  34.                            textList[i]->setText(decodeBase64(e.text()));
  35.                          }
  36.                        }
  37.                        for (int x=0;x<boxList.size();x++){
  38.                        obname =QString(boxList[x]->objectName()); 
  39.                            if( e.tagName() == obname ) {
  40.                             inhalt = decodeBase64(e.text());
  41.                                  int summ = boxList[x]->count();
  42.                                  for (int i=0;i<summ;i++){
  43.                                     QString value = boxList[x]->itemText(i);
  44.                                     if (inhalt == value) {
  45.                                     boxList[x]->setCurrentIndex(i);
  46.                                     }
  47.                                 }
  48.                            }
  49.                        }
  50.          n = n.nextSibling();
  51.         }
  52.     }
  53.    xmlfile.close();
  54. }
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