how to set height of single QTreeWidgetItem in QTreeWidget

zhuangbin

hi guys

Do you know how to set height of single QTreeWidgetItem in QTreeWidget? any idea? thx

mrjj

Hi and welcome to the forums
One way would be.

class HeightItemDelegate : public QStyledItemDelegate
{
public:
    HeightItemDelegate(QObject *poParent = nullptr) :
        QStyledItemDelegate(poParent)  {}

    QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const override
    {
        QSize oSize = QStyledItemDelegate::sizeHint(option, index);
        int height = index.model()->data( index, Qt::UserRole ).toInt();
        if ( height ) {
            oSize.setHeight(height);
        }
        return oSize;
    }
};
......
//use the delegate
HeightItemDelegate *delegate= new HeightItemDelegate(this);
ui->treeWidget->setItemDelegate(delegate);
 // set height for an item via model
auto model = ui->treeWidget->model();
// get index
QModelIndex indx = ui->treeWidget->model()->index(1, 0);
// assing the height value
model->setData( indx, 50 , Qt::UserRole);

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