Problem with Delegates in QTreeWidget

[DeRatizator]

Hi,

I am trying to figure out how QT delegates are supposed to work so I put a Delegate into QTreeWidget. I used default SpinBoxDelegate for a simple test below.

QTreeWidget *view = new QTreeWidget();
 
 
    view->setEditTriggers(QAbstractItemView::DoubleClicked | QAbstractItemView::SelectedClicked);
    view->setSelectionBehavior(QAbstractItemView::SelectRows);
 
    SpinBoxDelegate *delegate = new SpinBoxDelegate ();
    view->setItemDelegate(delegate);
 
    for (int row = 0; row < 20; ++row) {
         QTreeWidgetItem *item0 = new QTreeWidgetItem(view);
         item0->setText(0, QString("Test") + QString::number(row));
 
         view->addTopLevelItem(item0);
     }
 
    view->expandAll();
    view->show();

QTreeWidget *view = new QTreeWidget();


    view->setEditTriggers(QAbstractItemView::DoubleClicked | QAbstractItemView::SelectedClicked);
    view->setSelectionBehavior(QAbstractItemView::SelectRows);

    SpinBoxDelegate *delegate = new SpinBoxDelegate ();
    view->setItemDelegate(delegate);

    for (int row = 0; row < 20; ++row) {
         QTreeWidgetItem *item0 = new QTreeWidgetItem(view);
         item0->setText(0, QString("Test") + QString::number(row));

         view->addTopLevelItem(item0);
     }

    view->expandAll();
    view->show();

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In a result SpinBoxDelegate::createEditor never gets called.
What could be wrong with my code?

[Lykurg]

You have to set the item flag Qt::ItemIsEditable.

Moving to newbie.