Scrollbar always grayed out

[Gargolissimus]

Hello,

i used QtDesigner for placing a QScrollArea into a QWidget and placing a QGridLayout into this QScrollArea. Now i add QLabels into the GridLayout

QLabel *lab = new QLabel();
lab->setPixmap(QPixmap::fromImage(img));
lab->setMinimumSize(img.size());
m_ui.gridLayout->addWidget(lab, m_currentRow, m_currentColumn);
}

QLabel *lab = new QLabel();
lab->setPixmap(QPixmap::fromImage(img));
lab->setMinimumSize(img.size());
m_ui.gridLayout->addWidget(lab, m_currentRow, m_currentColumn);
}

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The Labels are added and displayed correctly, but if i add more labels than my Widget can display, the scrollbars (ScrollbarAlwaysOn) are still grayed out.
What has to be done?

Thanks in advance
Garg