| QwtAbstractScale | An abstract base class for classes containing a scale | 
| QwtAbstractScaleDraw | A abstract base class for drawing scales | 
| QwtAbstractSlider | An abstract base class for slider widgets | 
| QwtAlphaColorMap | QwtAlphaColorMap variies the alpha value of a color | 
| QwtAnalogClock | An analog clock | 
| QwtArrayData | Data class containing two QwtArray<double> objects | 
| QwtArrowButton | Arrow Button | 
| QwtColorMap | QwtColorMap is used to map values into colors | 
| QwtCompass | A Compass Widget | 
| QwtCompassMagnetNeedle | A magnet needle for compass widgets | 
| QwtCompassRose | Abstract base class for a compass rose | 
| QwtCompassWindArrow | An indicator for the wind direction | 
| QwtCounter | The Counter Widget | 
| QwtCPointerData | Data class containing two pointers to memory blocks of doubles | 
| QwtCurveFitter | Abstract base class for a curve fitter | 
| QwtData | QwtData defines an interface to any type of curve data | 
| QwtDial | QwtDial class provides a rounded range control | 
| QwtDialNeedle | Base class for needles that can be used in a QwtDial | 
| QwtDialScaleDraw | A special scale draw made for QwtDial | 
| QwtDialSimpleNeedle | A needle for dial widgets | 
| QwtDoubleInterval | A class representing an interval | 
| QwtDoubleRange | A class which controls a value within an interval | 
| QwtDynGridLayout | Lays out widgets in a grid, adjusting the number of columns and rows to the current size | 
| QwtEventPattern | A collection of event patterns | 
| QwtEventPattern::KeyPattern | A pattern for key events | 
| QwtEventPattern::MousePattern | A pattern for mouse events | 
| QwtIntervalData | Interval data class | 
| QwtKnob | The Knob Widget | 
| QwtLegend | The legend widget | 
| QwtLegendItem | A legend label | 
| QwtLinearColorMap | QwtLinearColorMap builds a color map from color stops | 
| QwtLinearScaleEngine | A scale engine for linear scales | 
| QwtLog10ScaleEngine | A scale engine for logarithmic (base 10) scales | 
| QwtMathMLTextEngine | Text Engine for the MathML renderer of the Qt solutions package | 
| QwtMetricsMap | A Map to translate between layout, screen and paint device metrics | 
| QwtPainter | A collection of QPainter workarounds | 
| QwtPanner | QwtPanner provides panning of a widget | 
| QwtPicker | QwtPicker provides selections on a widget | 
| QwtPickerClickPointMachine | A state machine for point selections | 
| QwtPickerClickRectMachine | A state machine for rectangle selections | 
| QwtPickerDragPointMachine | A state machine for point selections | 
| QwtPickerDragRectMachine | A state machine for rectangle selections | 
| QwtPickerMachine | A state machine for QwtPicker selections | 
| QwtPickerPolygonMachine | A state machine for polygon selections | 
| QwtPlainTextEngine | A text engine for plain texts | 
| QwtPlot | A 2-D plotting widget | 
| QwtPlotCanvas | Canvas of a QwtPlot | 
| QwtPlotCurve | A class which draws curves | 
| QwtPlotDict | A dictionary for plot items | 
| QwtPlotGrid | A class which draws a coordinate grid | 
| QwtPlotItem | Base class for items on the plot canvas | 
| QwtPlotLayout | Layout class for QwtPlot | 
| QwtPlotMagnifier | QwtPlotMagnifier provides zooming, by magnifying in steps | 
| QwtPlotMarker | A class for drawing markers | 
| QwtPlotPanner | QwtPlotPanner provides panning of a plot canvas | 
| QwtPlotPicker | QwtPlotPicker provides selections on a plot canvas | 
| QwtPlotPrintFilter | A base class for plot print filters | 
| QwtPlotRasterItem | A class, which displays raster data | 
| QwtPlotSpectrogram | A plot item, which displays a spectrogram | 
| QwtPlotSvgItem | A plot item, which displays data in Scalable Vector Graphics (SVG) format | 
| QwtPlotZoomer | QwtPlotZoomer provides stacked zooming for a plot widget | 
| QwtPolygonFData | Data class containing a single QwtArray<QwtDoublePoint> object | 
| QwtRasterData | QwtRasterData defines an interface to any type of raster data | 
| QwtRect | Some extensions for QRect | 
| QwtRichTextEngine | A text engine for Qt rich texts | 
| QwtRoundScaleDraw | A class for drawing round scales | 
| QwtScaleArithmetic | Arithmetic including a tolerance | 
| QwtScaleDiv | A class representing a scale division | 
| QwtScaleDraw | A class for drawing scales | 
| QwtScaleEngine | Base class for scale engines | 
| QwtScaleMap | A scale map | 
| QwtScaleTransformation | Operations for linear or logarithmic (base 10) transformations | 
| QwtScaleWidget | A Widget which contains a scale | 
| QwtSimpleCompassRose | A simple rose for QwtCompass | 
| QwtSlider | The Slider Widget | 
| QwtSpline | A class for spline interpolation | 
| QwtSplineCurveFitter | A curve fitter using cubic splines | 
| QwtSymbol | A class for drawing symbols | 
| QwtText | A class representing a text | 
| QwtTextEngine | Abstract base class for rendering text strings | 
| QwtTextLabel | A Widget which displays a QwtText | 
| QwtThermo | The Thermometer Widget | 
| QwtWheel | The Wheel Widget | 
 1.4.6
 1.4.6