| CQwtAbstractLegend | Abstract base class for legend widgets | 
| CQwtAbstractScale | An abstract base class for widgets having a scale | 
| CQwtAbstractScaleDraw | A abstract base class for drawing scales | 
| CQwtAbstractSeriesStore | Bridge between QwtSeriesStore and QwtPlotSeriesItem | 
| CQwtAbstractSlider | An abstract base class for slider widgets with a scale | 
| CQwtAlphaColorMap | QwtAlphaColorMap varies the alpha value of a color | 
| CQwtAnalogClock | An analog clock | 
| CQwtArraySeriesData | Template class for data, that is organized as QVector | 
| CQwtArrowButton | Arrow Button | 
| CQwtClipper | Some clipping algorithms | 
| CQwtColorMap | QwtColorMap is used to map values into colors | 
| CQwtColumnRect | Directed rectangle representing bounding rectangle and orientation of a column | 
| CQwtColumnSymbol | A drawing primitive for columns | 
| CQwtCompass | A Compass Widget | 
| CQwtCompassMagnetNeedle | A magnet needle for compass widgets | 
| CQwtCompassRose | Abstract base class for a compass rose | 
| CQwtCompassScaleDraw | A special scale draw made for QwtCompass | 
| CQwtCompassWindArrow | An indicator for the wind direction | 
| CQwtCounter | The Counter Widget | 
| CQwtCPointerData | Data class containing two pointers to memory blocks of doubles | 
| CQwtCurveFitter | Abstract base class for a curve fitter | 
| CQwtDate | A collection of methods around date/time values | 
| CQwtDateScaleDraw | A class for drawing datetime scales | 
| CQwtDateScaleEngine | A scale engine for date/time values | 
| CQwtDial | QwtDial class provides a rounded range control | 
| CQwtDialNeedle | Base class for needles that can be used in a QwtDial | 
| CQwtDialSimpleNeedle | A needle for dial widgets | 
| CQwtDynGridLayout | Lays out widgets in a grid, adjusting the number of columns and rows to the current size | 
| ►CQwtEventPattern | A collection of event patterns | 
| CKeyPattern | A pattern for key events | 
| CMousePattern | A pattern for mouse events | 
| CQwtGraphic | A paint device for scalable graphics | 
| CQwtInterval | A class representing an interval | 
| CQwtIntervalSample | A sample of the types (x1-x2, y) or (x, y1-y2) | 
| CQwtIntervalSeriesData | Interface for iterating over an array of intervals | 
| CQwtIntervalSymbol | A drawing primitive for displaying an interval like an error bar | 
| CQwtKnob | The Knob Widget | 
| CQwtLegend | The legend widget | 
| CQwtLegendData | Attributes of an entry on a legend | 
| CQwtLegendLabel | A widget representing something on a QwtLegend | 
| CQwtLinearColorMap | QwtLinearColorMap builds a color map from color stops | 
| CQwtLinearScaleEngine | A scale engine for linear scales | 
| CQwtLogScaleEngine | A scale engine for logarithmic scales | 
| CQwtLogTransform | Logarithmic transformation | 
| CQwtMagnifier | QwtMagnifier provides zooming, by magnifying in steps | 
| CQwtMathMLTextEngine | Text Engine for the MathML renderer of the Qt solutions package | 
| CQwtMatrixRasterData | A class representing a matrix of values as raster data | 
| CQwtNullPaintDevice | A null paint device doing nothing | 
| CQwtNullTransform | Null transformation | 
| CQwtOHLCSample | Open-High-Low-Close sample used in financial charts | 
| CQwtPainter | A collection of QPainter workarounds | 
| CQwtPainterCommand |  | 
| CQwtPanner | QwtPanner provides panning of a widget | 
| CQwtPicker | QwtPicker provides selections on a widget | 
| CQwtPickerClickPointMachine | A state machine for point selections | 
| CQwtPickerClickRectMachine | A state machine for rectangle selections | 
| CQwtPickerDragLineMachine | A state machine for line selections | 
| CQwtPickerDragPointMachine | A state machine for point selections | 
| CQwtPickerDragRectMachine | A state machine for rectangle selections | 
| CQwtPickerMachine | A state machine for QwtPicker selections | 
| CQwtPickerPolygonMachine | A state machine for polygon selections | 
| CQwtPickerTrackerMachine | A state machine for indicating mouse movements | 
| CQwtPixelMatrix | A bit field corresponding to the pixels of a rectangle | 
| CQwtPlainTextEngine | A text engine for plain texts | 
| CQwtPlot | A 2-D plotting widget | 
| CQwtPlotAbstractBarChart | Abstract base class for bar chart items | 
| CQwtPlotBarChart | QwtPlotBarChart displays a series of a values as bars | 
| CQwtPlotCanvas | Canvas of a QwtPlot | 
| CQwtPlotCurve | A plot item, that represents a series of points | 
| CQwtPlotDict | A dictionary for plot items | 
| CQwtPlotDirectPainter | Painter object trying to paint incrementally | 
| CQwtPlotGLCanvas | An alternative canvas for a QwtPlot derived from QGLWidget | 
| CQwtPlotGrid | A class which draws a coordinate grid | 
| CQwtPlotHistogram | QwtPlotHistogram represents a series of samples, where an interval is associated with a value ( ![$y = f([x1,x2])$](form_1.png) ) | 
| CQwtPlotIntervalCurve | QwtPlotIntervalCurve represents a series of samples, where each value is associated with an interval ( ![$[y1,y2] = f(x)$](form_2.png) ) | 
| CQwtPlotItem | Base class for items on the plot canvas | 
| CQwtPlotLayout | Layout engine for QwtPlot | 
| CQwtPlotLegendItem | A class which draws a legend inside the plot canvas | 
| CQwtPlotMagnifier | QwtPlotMagnifier provides zooming, by magnifying in steps | 
| CQwtPlotMarker | A class for drawing markers | 
| CQwtPlotMultiBarChart | QwtPlotMultiBarChart displays a series of a samples that consist each of a set of values | 
| CQwtPlotPanner | QwtPlotPanner provides panning of a plot canvas | 
| CQwtPlotPicker | QwtPlotPicker provides selections on a plot canvas | 
| CQwtPlotRasterItem | A class, which displays raster data | 
| CQwtPlotRenderer | Renderer for exporting a plot to a document, a printer or anything else, that is supported by QPainter/QPaintDevice | 
| CQwtPlotRescaler | QwtPlotRescaler takes care of fixed aspect ratios for plot scales | 
| CQwtPlotScaleItem | A class which draws a scale inside the plot canvas | 
| CQwtPlotSeriesItem | Base class for plot items representing a series of samples | 
| CQwtPlotShapeItem | A plot item, which displays any graphical shape, that can be defined by a QPainterPath | 
| CQwtPlotSpectroCurve | Curve that displays 3D points as dots, where the z coordinate is mapped to a color | 
| CQwtPlotSpectrogram | A plot item, which displays a spectrogram | 
| CQwtPlotSvgItem | A plot item, which displays data in Scalable Vector Graphics (SVG) format | 
| CQwtPlotTextLabel | A plot item, which displays a text label | 
| CQwtPlotTradingCurve | QwtPlotTradingCurve illustrates movements in the price of a financial instrument over time | 
| CQwtPlotZoneItem | A plot item, which displays a zone | 
| CQwtPlotZoomer | QwtPlotZoomer provides stacked zooming for a plot widget | 
| CQwtPoint3D | QwtPoint3D class defines a 3D point in double coordinates | 
| CQwtPoint3DSeriesData | Interface for iterating over an array of 3D points | 
| CQwtPointArrayData | Interface for iterating over two QVector<double> objects | 
| CQwtPointMapper | A helper class for translating a series of points | 
| CQwtPointPolar | A point in polar coordinates | 
| CQwtPointSeriesData | Interface for iterating over an array of points | 
| CQwtPowerTransform | A transformation using pow() | 
| CQwtRasterData | QwtRasterData defines an interface to any type of raster data | 
| CQwtRichTextEngine | A text engine for Qt rich texts | 
| CQwtRoundScaleDraw | A class for drawing round scales | 
| CQwtSamplingThread | A thread collecting samples at regular intervals | 
| CQwtScaleArithmetic | Arithmetic including a tolerance | 
| CQwtScaleDiv | A class representing a scale division | 
| CQwtScaleDraw | A class for drawing scales | 
| CQwtScaleEngine | Base class for scale engines | 
| CQwtScaleMap | A scale map | 
| CQwtScaleWidget | A Widget which contains a scale | 
| CQwtSeriesData | Abstract interface for iterating over samples | 
| CQwtSeriesStore | Class storing a QwtSeriesData object | 
| CQwtSetSample | A sample of the types (x1...xn, y) or (x, y1..yn) | 
| CQwtSetSeriesData | Interface for iterating over an array of samples | 
| CQwtSimpleCompassRose | A simple rose for QwtCompass | 
| CQwtSlider | The Slider Widget | 
| CQwtSpline | A class for spline interpolation | 
| CQwtSplineCurveFitter | A curve fitter using cubic splines | 
| CQwtSymbol | A class for drawing symbols | 
| CQwtSyntheticPointData | Synthetic point data | 
| CQwtSystemClock | QwtSystemClock provides high resolution clock time functions | 
| CQwtText | A class representing a text | 
| CQwtTextEngine | Abstract base class for rendering text strings | 
| CQwtTextLabel | A Widget which displays a QwtText | 
| CQwtThermo | The Thermometer Widget | 
| CQwtTradingChartData |  | 
| CQwtTransform | A transformation between coordinate systems | 
| CQwtWeedingCurveFitter | A curve fitter implementing Douglas and Peucker algorithm | 
| CQwtWheel | The Wheel Widget | 
| CQwtWidgetOverlay | An overlay for a widget |