Hello.

I have function that save my model to file. I use this function to do it:

Qt Code: 
  1. void MainWindow::ZapiszJako()
  2. {
  3.     NazwaPliku = QFileDialog::getSaveFileName(0,"Zapisz...", QDir::currentPath(),"Dane dziennika(*.dat)");
  4.     QFile plik(NazwaPliku);
  5.     if(!plik.open(QIODevice::WriteOnly))
  6.         return;
  7.     QTextStream out(&plik);
  8.     out<<model->rowCount()<<endl; out<<model->columnCount()<<endl;
  9.  
  10.     for (int row=0; row<model->rowCount(); row++)
  11.         for(int column=0; column<model->columnCount(); column++)
  12.         {
  13.             if(model->item(row,column)->text().isEmpty());
  14.                 model->item(row,column)->text() =="0";
  15.             out<<model->item(row,column)->text()<<endl;
  16.         }
  17.  
  18.     for (int row=0; row<model->rowCount(); row++)
  19.     {
  20.         QStandardItem *temp = new QStandardItem; temp = model->verticalHeaderItem(row);
  21.         out<<temp->text()<<endl;
  22.     }
  23. a
  24.     for (int column=0; column<model->columnCount(); column++)
  25.     {
  26.         QStandardItem *temp = new QStandardItem; temp = model->horizontalHeaderItem(column);
  27.         out<<temp->text()<<endl;
  28.     }
  29. }
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This working fine. But I have one problem. After insert new column and save the file, program was abort.

I use this function to insert column/row:
Qt Code: 
  1. void MainWindow::DodajPrzedmiot()
  2. {
  3.     model->insertColumn(model->columnCount()); model->setHeaderData(model->columnCount()-1,Qt::Horizontal,QVariant(QString(Zmienne().tempP)));
  4. }
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Problem fade away when I enter any values to new cells. If I dont do it - application abort.

Thanks