### - o -

- operator!=() : QwtInterval , QwtIntervalSample , QwtIntervalSymbol , QwtPoint3D , QwtPointPolar , QwtScaleDiv , QwtSetSample , QwtText
- operator&() : QwtInterval
- operator&=() : QwtInterval
- operator=() : QwtGraphic , QwtIntervalSymbol , QwtPainterCommand , QwtScaleMap , QwtSpline , QwtText
- operator==() : QwtInterval , QwtIntervalSample , QwtIntervalSymbol , QwtPoint3D , QwtPointPolar , QwtScaleDiv , QwtSetSample , QwtText
- operator|() : QwtInterval
- operator|=() : QwtInterval
- orientation() : QwtColumnRect , QwtPlotRescaler , QwtPlotSeriesItem , QwtPlotZoneItem , QwtScaleDraw , QwtSlider , QwtThermo , QwtWheel
- orientations() : QwtPanner
- origin() : QwtDial , QwtThermo
- originMode() : QwtThermo
- QwtOHLCSample() : QwtOHLCSample