How copy data from one model view to another

[Lykurg]

Have you checked if ui->listtableView_2->model() is returning a null pointer (= the view hasn't any model yet)? You first have to set a model to the view (best in the constructor) and then you can reuse the model in your on_pushButton_clicked function.

[breakthecode]

thanks 1000
this is what i am looking for 2 days this single piece idea
you said it in the first day but i can't understand it, i now know it's a basic in c++ pro. but i can't understand it, sorry for waisting your time
again thanks , now it's working very well.

[Lykurg]

You are welcome.

[breakthecode]

here i publish the full result of the forum discussion, it's useful for anyone encountering the same problem
aim is to copy a data from a qtableview and add that data to another qtableview
first create a constructor

void dcsinter::listing()
{
    QStringListModel *model = new QStringListModel;
    ui->listtableView_2->setModel(model);
 
 
}

void dcsinter::listing()
{
    QStringListModel *model = new QStringListModel;
    ui->listtableView_2->setModel(model);


}

To copy to clipboard, switch view to plain text mode 

then on click push button

void dcsinter::on_pushButton_clicked()
{
 
    const QModelIndex index = ui->dirtableView->selectionModel()->currentIndex();
    QString selectedtext = index.data(Qt::DisplayRole).toString();
 
    QStringListModel* model = qobject_cast<QStringListModel*>(ui->listtableView_2->model());
    QStringList list = model->stringList();
    list << selectedtext ;
    model->setStringList(list);
 
}

void dcsinter::on_pushButton_clicked()
{

    const QModelIndex index = ui->dirtableView->selectionModel()->currentIndex();
    QString selectedtext = index.data(Qt::DisplayRole).toString();

    QStringListModel* model = qobject_cast<QStringListModel*>(ui->listtableView_2->model());
    QStringList list = model->stringList();
    list << selectedtext ;
    model->setStringList(list);

}

To copy to clipboard, switch view to plain text mode 

[Lykurg]

Hi, one more improvement to avoid the cast: Make the model a private member of your class an access it directly.

[breakthecode]

can we remove an added item from the table

[Lykurg]

Yes, Use QStringListModel::removeRows(). If you have a string and want to know which index (row number) is has, use QAbstractItemModel::match().