| CQCPAbstractItem | The abstract base class for all items in a plot |
| CQCPAbstractLegendItem | The abstract base class for all entries in a QCPLegend |
| CQCPAbstractPaintBuffer | The abstract base class for paint buffers, which define the rendering backend |
| CQCPAbstractPlottable | The abstract base class for all data representing objects in a plot |
| CQCPAbstractPlottable1D | A template base class for plottables with one-dimensional data |
| CQCPAxis | Manages a single axis inside a QCustomPlot |
| CQCPAxisRect | Holds multiple axes and arranges them in a rectangular shape |
| CQCPAxisTicker | The base class tick generator used by QCPAxis to create tick positions and tick labels |
| CQCPAxisTickerDateTime | Specialized axis ticker for calendar dates and times as axis ticks |
| CQCPAxisTickerFixed | Specialized axis ticker with a fixed tick step |
| CQCPAxisTickerLog | Specialized axis ticker suited for logarithmic axes |
| CQCPAxisTickerPi | Specialized axis ticker to display ticks in units of an arbitrary constant, for example pi |
| CQCPAxisTickerText | Specialized axis ticker which allows arbitrary labels at specified coordinates |
| CQCPAxisTickerTime | Specialized axis ticker for time spans in units of milliseconds to days |
| CQCPBars | A plottable representing a bar chart in a plot |
| CQCPBarsData | Holds the data of one single data point (one bar) for QCPBars |
| CQCPBarsGroup | Groups multiple QCPBars together so they appear side by side |
| CQCPColorGradient | Defines a color gradient for use with e.g. QCPColorMap |
| CQCPColorMap | A plottable representing a two-dimensional color map in a plot |
| CQCPColorMapData | Holds the two-dimensional data of a QCPColorMap plottable |
| CQCPColorScale | A color scale for use with color coding data such as QCPColorMap |
| CQCPCurve | A plottable representing a parametric curve in a plot |
| CQCPCurveData | Holds the data of one single data point for QCPCurve |
| CQCPDataContainer | The generic data container for one-dimensional plottables |
| CQCPDataRange | Describes a data range given by begin and end index |
| CQCPDataSelection | Describes a data set by holding multiple QCPDataRange instances |
| CQCPErrorBars | A plottable that adds a set of error bars to other plottables |
| CQCPErrorBarsData | Holds the data of one single error bar for QCPErrorBars |
| CQCPFinancial | A plottable representing a financial stock chart |
| CQCPFinancialData | Holds the data of one single data point for QCPFinancial |
| CQCPGraph | A plottable representing a graph in a plot |
| CQCPGraphData | Holds the data of one single data point for QCPGraph |
| CQCPGrid | Responsible for drawing the grid of a QCPAxis |
| CQCPItemAnchor | An anchor of an item to which positions can be attached to |
| CQCPItemBracket | A bracket for referencing/highlighting certain parts in the plot |
| CQCPItemCurve | A curved line from one point to another |
| CQCPItemEllipse | An ellipse |
| CQCPItemLine | A line from one point to another |
| CQCPItemPixmap | An arbitrary pixmap |
| CQCPItemPosition | Manages the position of an item |
| CQCPItemRect | A rectangle |
| CQCPItemStraightLine | A straight line that spans infinitely in both directions |
| CQCPItemText | A text label |
| CQCPItemTracer | Item that sticks to QCPGraph data points |
| CQCPLayer | A layer that may contain objects, to control the rendering order |
| CQCPLayerable | Base class for all drawable objects |
| CQCPLayout | The abstract base class for layouts |
| CQCPLayoutElement | The abstract base class for all objects that form the layout system |
| CQCPLayoutGrid | A layout that arranges child elements in a grid |
| CQCPLayoutInset | A layout that places child elements aligned to the border or arbitrarily positioned |
| CQCPLegend | Manages a legend inside a QCustomPlot |
| CQCPLineEnding | Handles the different ending decorations for line-like items |
| CQCPMarginGroup | A margin group allows synchronization of margin sides if working with multiple layout elements |
| CQCPPaintBufferGlFbo | A paint buffer based on OpenGL frame buffers objects, using hardware accelerated rendering |
| CQCPPaintBufferGlPbuffer | A paint buffer based on OpenGL pixel buffers, using hardware accelerated rendering |
| CQCPPaintBufferPixmap | A paint buffer based on QPixmap, using software raster rendering |
| CQCPPainter | QPainter subclass used internally |
| CQCPPlottableInterface1D | Defines an abstract interface for one-dimensional plottables |
| CQCPPlottableLegendItem | A legend item representing a plottable with an icon and the plottable name |
| CQCPPolarAxisAngular | The main container for polar plots, representing the angular axis as a circle |
| CQCPPolarAxisRadial | The radial axis inside a radial plot |
| CQCPPolarGraph | A radial graph used to display data in polar plots |
| CQCPPolarGrid | The grid in both angular and radial dimensions for polar plots |
| CQCPPolarLegendItem | A legend item for polar plots |
| CQCPRange | Represents the range an axis is encompassing |
| CQCPScatterStyle | Represents the visual appearance of scatter points |
| CQCPSelectionDecorator | Controls how a plottable's data selection is drawn |
| CQCPSelectionDecoratorBracket | A selection decorator which draws brackets around each selected data segment |
| CQCPSelectionRect | Provides rect/rubber-band data selection and range zoom interaction |
| CQCPStatisticalBox | A plottable representing a single statistical box in a plot |
| CQCPStatisticalBoxData | Holds the data of one single data point for QCPStatisticalBox |
| CQCPTextElement | A layout element displaying a text |
| CQCPVector2D | Represents two doubles as a mathematical 2D vector |
| CQCustomPlot | The central class of the library. This is the QWidget which displays the plot and interacts with the user |