QGridLayout force column creation

[Teermit]

Hello. I have QGridLayout inside of QScrollArea.
I'm trying to to add in it an image using this code:

QWidget *target = findChild<QWidget*>("imagesBoxContent");
    QGridLayout *targetLayout = target->findChild<QGridLayout*>("gridLayout");
    foreach (QString imagePath, list)
    {
        QLabel *newItem = new QLabel(target);
        newItem->setMinimumHeight(50);
        newItem->setMaximumHeight(50);
        newItem->setSizePolicy(QSizePolicy::Minimum,QSizePolicy::Fixed);
        QImage image(imagePath);
        newItem->setPixmap(QPixmap::fromImage(image.scaledToHeight(50)));
        targetLayout->addWidget(newItem);
    }

QWidget *target = findChild<QWidget*>("imagesBoxContent");
    QGridLayout *targetLayout = target->findChild<QGridLayout*>("gridLayout");
    foreach (QString imagePath, list)
    {
        QLabel *newItem = new QLabel(target);
        newItem->setMinimumHeight(50);
        newItem->setMaximumHeight(50);
        newItem->setSizePolicy(QSizePolicy::Minimum,QSizePolicy::Fixed);
        QImage image(imagePath);
        newItem->setPixmap(QPixmap::fromImage(image.scaledToHeight(50)));
        targetLayout->addWidget(newItem);
    }

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And I get this result:
Снимок.PNG
But I'm trying to get this result:
Снимок_.jpg
How to make the QGridLayout create columns?