WidgetMarkerLine 0 0 360 192 Form Marker Change Qt::Horizontal QSizePolicy::Preferred 40 20 Marker interval Rotate marker Line offset 2 -100000.000000000000000 100000.000000000000000 2 100000.000000000000000 1.000000000000000 Qt::Vertical 261 40 btnChangeMarker spinInterval