- , m_horizontalData(this, &m_currentPosX, scrollableArea->visibleWidth())
- , m_verticalData(this, &m_currentPosY, scrollableArea->visibleHeight())
+ , m_horizontalData(&m_currentPosX, scrollableArea->visibleWidth())
+ , m_verticalData(&m_currentPosY, scrollableArea->visibleHeight())