How to go about saving?

I have made a simple interest calculator that takes into account payments made (up to 108). This means that I have 108 payment boxes, and 108 date edits.

I now want to save that information. What would be the best way to go about it? I thought about using Session Management (http://doc.trolltech.com/latest/session.html), but that doesn't appear to be the right answer. The most obvious way to do it would be to take the array information and have it stored as a csv and then have that csv parsed back in when the user wants to load. However, that would require me writing 200+ if statements (unless there is some way to write a for statement that would also change the numbering of the spinboxes and date edits).

Are there any other ways to go about solving this problem?

You have manually created 108 spinboxes and date edits?

You would have been much better off to declare them in a QList in the first place. Then you can easily iterate through them.

Code:

---

class MainWindow : public QMainWindow
{
public:
   MainWindow() {
      QGridLayout* gl = new QGridLayout();
      for (int i = 0;i < 108;++i)
      {
          QSpinBox* sb = new QSpinBox()
          payments_sb.append(sb);
          gl.addWidget(de,i,0);
 
          QDateEdit* de = new QDateEdit();
          dueDates_de.append(de);
          gl.addWidget(de,i,1);
      }
      QWidget* w = new QWidget();
      w.setLayout(gl);
      setCentralWidget(w);
   }
   void writeToStream(QDataStream& ds)
   {
       ds << payments_sb.length();
       for (int i=0;i<payments_sb.length();++i)
       {
            ds << payments_sb.at(i).value() << dueDates_de.at(i) ... ;
       }
   }
private:
  QList<QSpinBox* > payments_sb;
  QList<QDateEdit* > dueDates_de;
}
 
..

---

Or use a QTableWidget or View with custom delegates for your datatypes.

Joh

Yes, I manually created them using QT Designer. They all go dateEdit_1, dateEdit_2, etc. Is there a way to cycle through them? If not, looks like some crying is in order as I will either have to do it manually, or just rework the program using QList (or some other solution).

(fuck it, I may just write a for statement that will output the needed code to a text document and then copy that into the source...)

Ok if you insist you can loop through the children of your mainwidget! But thats not really good design! But definitely better than hard coding!

Code:

---

int i = 1;
QDateEdit *de;
do
{
   de = parentWidget->findChild<QDateEdit *>(QString("dateEdit_%1").arg(i));
   if (de) {
      ...
   }
   ++i;
} while (de);

---

Joh