QTableView not working as expected.

Hi guys, im rather new to Qt and im following a book : Foudations of Qt Development. Im trying to use the QTableView to display data, but it doesnt seem to work, it only displays a empty viewer.

This is my constructor:

Code:

---

MainDialog::MainDialog(QWidget *parent)
    : QDialog(parent), ui(new Ui::MainDialog)
{
   // ui->setupUi(this);
    QTableView *table = new QTableView;
 
    QStandardItemModel model(5, 2);
    for (int row = 0; row < 5; ++row){
        for (int col = 0; col < 2; ++col){
            QStandardItem *item = new QStandardItem(QString("Row:%1, Column:%2").arg(row).arg(col));
 
            if (col == 0){
                for (int i = 0; i < 3; ++i){
                    item->appendRow(new QStandardItem( QString("Item %1").arg(i)));
                }
            }
 
            model.setItem(row, col, item);
        }
    }
 
    table->setModel(&model);
    table->show();
 
    QHBoxLayout *layout = new QHBoxLayout;
    layout->addWidget(table);
    setLayout(layout);
}

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Please be forgiving with your words as im really new thanks:p

you creates QStandardItemModel model(5, 2); in a stack (an object will be destroyed when out of scope). you should create in the heap, i.e. QStandardItemModel *model = new QStandardItemModel(5, 2);.

ahh ty, cause the book used it in the main function. Thanks for your expertise:)

After successfully implementing the QTableView, how do i make it stretch fully? As there are gaps on the right and bottom.

im not sure if im allowed to do this, bumps.

Try:

Code:

---

table->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);

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Thanks for the help but it doesnt seem to be working. :(

edit: it seems that it isnt the QTableView that is not expanding, rather it is the model that it is displaying that doesnt expand.

You don't need line 23 in your original post.

Maybe:

Code:

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table->horizontalHeader()->setStretchLastSection(true);
OR
table->horizontalHeader()->setResizeMode(0, QHeaderView::Stretch);

---

are more to your liking?