connect(m_trackview, SIGNAL(zoomIn ()), this, SLOT(slotZoomIn()));
connect(m_trackview, SIGNAL(zoomOut ()), this, SLOT(slotZoomOut()));
connect(m_trackview->horizontalScrollBar(), SIGNAL(sliderMoved( int )), m_ruler, SLOT(slotMoveRuler( int )));
+ connect(m_trackview, SIGNAL(mousePosition(int)), this, SIGNAL(mousePosition(int)));
view->horizontalSlider->setValue(4);
m_currentZoom = view->horizontalSlider->value();