How to save Qstring from QTableView

[wodzu-96]

Thank you very much for response, but i have still this error. When I run this function I see in qt error like this:
ASSERT: "!isEmpty()" in file c:\QtSDK\Desktop\Qt\4.7.3\mingw\include/QtCore/qlist.h, line 273
Invalid parameter passed to C runtime function.
Invalid parameter passed to C runtime function.
When i read your response I modify my code and i have this:

QString copy;
     QStringList list;
     QItemSelectionModel *selectionM = ui->tableView->selectionModel();
     QModelIndexList selectionL = selectionM->selectedIndexes();
     selectionL.removeFirst();
     foreach ( const QModelIndex& index, selectionL)
     {
        list = index.data().toStringList() ;
     }
         copy =list.join(", ");
     QMessageBox::information(this, "Kopiowanie", copy);

QString copy;
     QStringList list;
     QItemSelectionModel *selectionM = ui->tableView->selectionModel();
     QModelIndexList selectionL = selectionM->selectedIndexes();
     selectionL.removeFirst();
     foreach ( const QModelIndex& index, selectionL)
     {
        list = index.data().toStringList() ;
     }
         copy =list.join(", ");
     QMessageBox::information(this, "Kopiowanie", copy);

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This error results from "selectionL.removeFirst();" but when i removed this line i don't have a char in QString. Sorry for my language but I live in Poland.

[R-Type]

selectedIndexes() gives you only selection and it seems you haven't selected anything. Threrfore selectionL contains nothing and you have to check whether selectionL empty or not before removeFirst() call.
Overwriting list inside loop is also obviously not what you want. You probably want to append data to the list, so list.append() should be the way.

[wodzu-96]

Ok I check this and selectionL is empty but i don't know why and what should I do. Sorry but I am inexperianced. I create table in this function:

model = new QSqlTableModel(this);
        model ->setTable(ntabeli);
        model ->select();
    ui->tableView->setModel(model);

model = new QSqlTableModel(this);
        model ->setTable(ntabeli);
        model ->select();
    ui->tableView->setModel(model);

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