Adding combobox current text to a text file

[gabor53]

Hi,
I have the following code to add the text the user typed into the combobox:

 //Adding Material Combobox

		Material_Label->setText ("Material: ");
        Material_Label->setFont (g);

    	Material_Combo->setMaxVisibleItems (8);
        Material_Combo->setEditable (true);

        material = Material_Combo->currentText ();
        Material_Combo->addItem (material);


        Material_Combo->setMaximumWidth (200);
        Material_Combo->setStyleSheet ("QComboBox {"
                       "border-radius: 3px;"
                       "background-color:rgb(202, 255, 227);"
                       "padding: 1px 18px 1px 3px;"
                       "font: 16px ;"
                       "border-radius: 10px;"
                       "border: 1px solid gray;}"
                       );

        connect(Material_Combo,SIGNAL(currentIndexChanged(int)),this,SLOT(processMaterial()));

        QFile inputFile("C:/Programming/Projects/Folkfriends/combo.txt");

        if(inputFile.open (QIODevice::ReadOnly | QIODevice::Text))
        {
            QTextStream in(&inputFile);
            while(!in.atEnd ())
            {
                QString Material = in.readLine ();
                Material_Combo->addItem (Material);
            }
        }


void Additem::processMaterial()
{

    qDebug()<< "Material SIGNAL works!";


    material  = Material_Combo->currentText ();

    qDebug() << "Material: " <<   material;

          QFile file("C:/Programming/Projects/Qcombobox2/combo.txt");

          if(!file.open (QIODevice::ReadOnly | QIODevice::Text))
              return;

          while(!file.atEnd ())
          {
              QByteArray line = file.readLine ();
              //process_line(line);

              if(material == line)
              {
                 qDebug() <<"We are not adding anything to the file!";
                  file.close ();
                  return;
              }
              else
              {

                 Material_Combo->addItem (material);

                 QFile add_to_file("C:/Programming/Projects/Folkfriends/combo.txt");
                  if(add_to_file.open (QIODevice::WriteOnly | QIODevice::Text |QIODevice::Append))
                     {
                      QTextStream stream(&add_to_file);

                      stream << material << "\n";

                      stream.flush ();
                      add_to_file.close ();
                      }
                 }

          }
}

It does add the item but after a blank line and 5 times. So the entry looks like this:

Wood

Metal
Metal
Metal
Metal
Metal

Please help me to figure out what to do to add it only once without the blank line.
Thank you.

[Olivier Ronat]

The current index changes when adding an item. I think that process Material slot procedure is reentrant when using add item in it. Probably the problem issue.