| Qwt User's Guide
    5.2.3
    | 
|   QwtEventPattern::KeyPattern | A pattern for key events | 
|   QwtEventPattern::MousePattern | A pattern for mouse events | 
|   QwtAbstractScale | An abstract base class for classes containing a scale | 
|    QwtKnob | The Knob Widget | 
|    QwtSlider | The Slider Widget | 
|    QwtThermo | The Thermometer Widget | 
|   QwtAbstractScaleDraw | A abstract base class for drawing scales | 
|    QwtRoundScaleDraw | A class for drawing round scales | 
|     QwtDialScaleDraw | A special scale draw made for QwtDial | 
|    QwtScaleDraw | A class for drawing scales | 
|   QwtArrowButton | Arrow Button | 
|   QwtClipper | Some clipping algos | 
|   QwtColorMap | QwtColorMap is used to map values into colors | 
|    QwtAlphaColorMap | QwtAlphaColorMap variies the alpha value of a color | 
|    QwtLinearColorMap | QwtLinearColorMap builds a color map from color stops | 
|   QwtCompassRose | Abstract base class for a compass rose | 
|    QwtSimpleCompassRose | A simple rose for QwtCompass | 
|   QwtCurveFitter | Abstract base class for a curve fitter | 
|    QwtSplineCurveFitter | A curve fitter using cubic splines | 
|   QwtData | QwtData defines an interface to any type of curve data | 
|    QwtArrayData | Data class containing two QwtArray<double> objects | 
|    QwtCPointerData | Data class containing two pointers to memory blocks of doubles | 
|    QwtPolygonFData | Data class containing a single QwtArray<QwtDoublePoint> object | 
|   QwtDialNeedle | Base class for needles that can be used in a QwtDial | 
|    QwtCompassMagnetNeedle | A magnet needle for compass widgets | 
|    QwtCompassWindArrow | An indicator for the wind direction | 
|    QwtDialSimpleNeedle | A needle for dial widgets | 
|   QwtDoubleInterval | A class representing an interval | 
|   QwtDoubleRange | A class which controls a value within an interval | 
|    QwtAbstractSlider | An abstract base class for slider widgets | 
|     QwtDial | QwtDial class provides a rounded range control | 
|      QwtAnalogClock | An analog clock | 
|      QwtCompass | A Compass Widget | 
|     QwtKnob | The Knob Widget | 
|     QwtSlider | The Slider Widget | 
|     QwtWheel | The Wheel Widget | 
|    QwtCounter | The Counter Widget | 
|   QwtDynGridLayout | Lays out widgets in a grid, adjusting the number of columns and rows to the current size | 
|   QwtEventPattern | A collection of event patterns | 
|    QwtPicker | QwtPicker provides selections on a widget | 
|     QwtPlotPicker | QwtPlotPicker provides selections on a plot canvas | 
|      QwtPlotZoomer | QwtPlotZoomer provides stacked zooming for a plot widget | 
|   QwtIntervalData | Series of samples of a value and an interval | 
|   QwtLegend | The legend widget | 
|   QwtLegendItemManager | Abstract API to bind plot items to the legend | 
|    QwtPlotItem | Base class for items on the plot canvas | 
|     QwtPlotCurve | A plot item, that represents a series of points | 
|     QwtPlotGrid | A class which draws a coordinate grid | 
|     QwtPlotMarker | A class for drawing markers | 
|     QwtPlotRasterItem | A class, which displays raster data | 
|      QwtPlotSpectrogram | A plot item, which displays a spectrogram | 
|     QwtPlotScaleItem | A class which draws a scale inside the plot canvas | 
|     QwtPlotSvgItem | A plot item, which displays data in Scalable Vector Graphics (SVG) format | 
|   QwtMagnifier | QwtMagnifier provides zooming, by magnifying in steps | 
|    QwtPlotMagnifier | QwtPlotMagnifier provides zooming, by magnifying in steps | 
|   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 | 
|    QwtPlotPanner | QwtPlotPanner provides panning of a plot canvas | 
|   QwtPickerMachine | A state machine for QwtPicker selections | 
|    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 | 
|    QwtPickerPolygonMachine | A state machine for polygon selections | 
|   QwtPlotCanvas | Canvas of a QwtPlot | 
|   QwtPlotDict | A dictionary for plot items | 
|    QwtPlot | A 2-D plotting widget | 
|   QwtPlotLayout | Layout engine for QwtPlot | 
|   QwtPlotPrintFilter | A base class for plot print filters | 
|   QwtPlotRescaler | QwtPlotRescaler takes care of fixed aspect ratios for plot scales | 
|   QwtRasterData | QwtRasterData defines an interface to any type of raster data | 
|   QwtScaleArithmetic | Arithmetic including a tolerance | 
|   QwtScaleDiv | A class representing a scale division | 
|   QwtScaleEngine | Base class for scale engines | 
|    QwtLinearScaleEngine | A scale engine for linear scales | 
|    QwtLog10ScaleEngine | A scale engine for logarithmic (base 10) scales | 
|   QwtScaleMap | A scale map | 
|   QwtScaleTransformation | Operations for linear or logarithmic (base 10) transformations | 
|   QwtScaleWidget | A Widget which contains a scale | 
|   QwtSpline | A class for spline interpolation | 
|   QwtSymbol | A class for drawing symbols | 
|   QwtText | A class representing a text | 
|   QwtTextEngine | Abstract base class for rendering text strings | 
|    QwtMathMLTextEngine | Text Engine for the MathML renderer of the Qt solutions package | 
|    QwtPlainTextEngine | A text engine for plain texts | 
|    QwtRichTextEngine | A text engine for Qt rich texts | 
|   QwtTextLabel | A Widget which displays a QwtText | 
|    QwtLegendItem | A legend label | 
 1.8.1
 1.8.1