|   QwtAbstractLegend | Abstract base class for legend widgets | 
|   QwtAbstractScale | An abstract base class for widgets having a scale | 
|   QwtAbstractScaleDraw | A abstract base class for drawing scales | 
|   QwtAbstractSeriesStore | Bridge between QwtSeriesStore and QwtPlotSeriesItem | 
|   QwtAbstractSlider | An abstract base class for slider widgets with a scale | 
|   QwtAlphaColorMap | QwtAlphaColorMap varies the alpha value of a color | 
|   QwtAnalogClock | An analog clock | 
|   QwtArraySeriesData | Template class for data, that is organized as QVector | 
|   QwtArrowButton | Arrow Button | 
|   QwtClipper | Some clipping algorithms | 
|   QwtColorMap | QwtColorMap is used to map values into colors | 
|   QwtColumnRect | Directed rectangle representing bounding rectangle and orientation of a column | 
|   QwtColumnSymbol | A drawing primitive for columns | 
|   QwtCompass | A Compass Widget | 
|   QwtCompassMagnetNeedle | A magnet needle for compass widgets | 
|   QwtCompassRose | Abstract base class for a compass rose | 
|   QwtCompassScaleDraw | A special scale draw made for QwtCompass | 
|   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 | 
|   QwtDate | A collection of methods around date/time values | 
|   QwtDateScaleDraw | A class for drawing datetime scales | 
|   QwtDateScaleEngine | A scale engine for date/time values | 
|   QwtDial | QwtDial class provides a rounded range control | 
|   QwtDialNeedle | Base class for needles that can be used in a QwtDial | 
|   QwtDialSimpleNeedle | A needle for dial widgets | 
|   QwtDynGridLayout | Lays out widgets in a grid, adjusting the number of columns and rows to the current size | 
|   QwtEventPattern | A collection of event patterns | 
|    KeyPattern | A pattern for key events | 
|    MousePattern | A pattern for mouse events | 
|   QwtGraphic | A paint device for scalable graphics | 
|   QwtInterval | A class representing an interval | 
|   QwtIntervalSample | A sample of the types (x1-x2, y) or (x, y1-y2) | 
|   QwtIntervalSeriesData | Interface for iterating over an array of intervals | 
|   QwtIntervalSymbol | A drawing primitive for displaying an interval like an error bar | 
|   QwtKnob | The Knob Widget | 
|   QwtLegend | The legend widget | 
|   QwtLegendData | Attributes of an entry on a legend | 
|   QwtLegendLabel | A widget representing something on a QwtLegend | 
|   QwtLinearColorMap | QwtLinearColorMap builds a color map from color stops | 
|   QwtLinearScaleEngine | A scale engine for linear scales | 
|   QwtLogScaleEngine | A scale engine for logarithmic scales | 
|   QwtLogTransform | Logarithmic transformation | 
|   QwtMagnifier | QwtMagnifier provides zooming, by magnifying in steps | 
|   QwtMathMLTextEngine | Text Engine for the MathML renderer of the Qt solutions package | 
|   QwtMatrixRasterData | A class representing a matrix of values as raster data | 
|   QwtNullPaintDevice | A null paint device doing nothing | 
|   QwtNullTransform | Null transformation | 
|   QwtOHLCSample | Open-High-Low-Close sample used in financial charts | 
|   QwtPainter | A collection of QPainter workarounds | 
|   QwtPainterCommand |  | 
|   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 | 
|   QwtPickerDragLineMachine | A state machine for line 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 | 
|   QwtPickerTrackerMachine | A state machine for indicating mouse movements | 
|   QwtPixelMatrix | A bit field corresponding to the pixels of a rectangle | 
|   QwtPlainTextEngine | A text engine for plain texts | 
|   QwtPlot | A 2-D plotting widget | 
|   QwtPlotAbstractBarChart | Abstract base class for bar chart items | 
|   QwtPlotBarChart | QwtPlotBarChart displays a series of a values as bars | 
|   QwtPlotCanvas | Canvas of a QwtPlot | 
|   QwtPlotCurve | A plot item, that represents a series of points | 
|   QwtPlotDict | A dictionary for plot items | 
|   QwtPlotDirectPainter | Painter object trying to paint incrementally | 
|   QwtPlotGLCanvas | An alternative canvas for a QwtPlot derived from QGLWidget | 
|   QwtPlotGrid | A class which draws a coordinate grid | 
|   QwtPlotHistogram | QwtPlotHistogram represents a series of samples, where an interval is associated with a value ( ![$y = f([x1,x2])$](form_1.png) ) | 
|   QwtPlotIntervalCurve | QwtPlotIntervalCurve represents a series of samples, where each value is associated with an interval ( ![$[y1,y2] = f(x)$](form_2.png) ) | 
|   QwtPlotItem | Base class for items on the plot canvas | 
|   QwtPlotLayout | Layout engine for QwtPlot | 
|   QwtPlotLegendItem | A class which draws a legend inside the plot canvas | 
|   QwtPlotMagnifier | QwtPlotMagnifier provides zooming, by magnifying in steps | 
|   QwtPlotMarker | A class for drawing markers | 
|   QwtPlotMultiBarChart | QwtPlotMultiBarChart displays a series of a samples that consist each of a set of values | 
|   QwtPlotPanner | QwtPlotPanner provides panning of a plot canvas | 
|   QwtPlotPicker | QwtPlotPicker provides selections on a plot canvas | 
|   QwtPlotRasterItem | A class, which displays raster data | 
|   QwtPlotRenderer | Renderer for exporting a plot to a document, a printer or anything else, that is supported by QPainter/QPaintDevice | 
|   QwtPlotRescaler | QwtPlotRescaler takes care of fixed aspect ratios for plot scales | 
|   QwtPlotScaleItem | A class which draws a scale inside the plot canvas | 
|   QwtPlotSeriesItem | Base class for plot items representing a series of samples | 
|   QwtPlotShapeItem | A plot item, which displays any graphical shape, that can be defined by a QPainterPath | 
|   QwtPlotSpectroCurve | Curve that displays 3D points as dots, where the z coordinate is mapped to a color | 
|   QwtPlotSpectrogram | A plot item, which displays a spectrogram | 
|   QwtPlotSvgItem | A plot item, which displays data in Scalable Vector Graphics (SVG) format | 
|   QwtPlotTextLabel | A plot item, which displays a text label | 
|   QwtPlotTradingCurve | QwtPlotTradingCurve illustrates movements in the price of a financial instrument over time | 
|   QwtPlotZoneItem | A plot item, which displays a zone | 
|   QwtPlotZoomer | QwtPlotZoomer provides stacked zooming for a plot widget | 
|   QwtPoint3D | QwtPoint3D class defines a 3D point in double coordinates | 
|   QwtPoint3DSeriesData | Interface for iterating over an array of 3D points | 
|   QwtPointArrayData | Interface for iterating over two QVector<double> objects | 
|   QwtPointMapper | A helper class for translating a series of points | 
|   QwtPointPolar | A point in polar coordinates | 
|   QwtPointSeriesData | Interface for iterating over an array of points | 
|   QwtPowerTransform | A transformation using pow() | 
|   QwtRasterData | QwtRasterData defines an interface to any type of raster data | 
|   QwtRichTextEngine | A text engine for Qt rich texts | 
|   QwtRoundScaleDraw | A class for drawing round scales | 
|   QwtSamplingThread | A thread collecting samples at regular intervals | 
|   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 | 
|   QwtScaleWidget | A Widget which contains a scale | 
|   QwtSeriesData | Abstract interface for iterating over samples | 
|   QwtSeriesStore | Class storing a QwtSeriesData object | 
|   QwtSetSample | A sample of the types (x1...xn, y) or (x, y1..yn) | 
|   QwtSetSeriesData | Interface for iterating over an array of samples | 
|   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 | 
|   QwtSyntheticPointData | Synthetic point data | 
|   QwtSystemClock | QwtSystemClock provides high resolution clock time functions | 
|   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 | 
|   QwtTradingChartData |  | 
|   QwtTransform | A transformation between coordinate systems | 
|   QwtWeedingCurveFitter | A curve fitter implementing Douglas and Peucker algorithm | 
|   QwtWheel | The Wheel Widget | 
|   QwtWidgetOverlay | An overlay for a widget |