connect(m_trackview, SIGNAL(cursorMoved ( int )), this, SLOT(slotCursorMoved( int )));
connect(m_trackview, SIGNAL(zoomIn ()), this, SLOT(slotZoomIn()));
connect(m_trackview, SIGNAL(zoomOut ()), this, SLOT(slotZoomOut()));
connect(m_trackview, SIGNAL(cursorMoved ( int )), this, SLOT(slotCursorMoved( int )));
connect(m_trackview, SIGNAL(zoomIn ()), this, SLOT(slotZoomIn()));
connect(m_trackview, SIGNAL(zoomOut ()), this, SLOT(slotZoomOut()));