Qt Charts C++ 類

用於 Qt Charts API 的 C++ 類。更多...

類

QAbstractAxis	用於專用軸類的基類
QAbstractBarSeries	用於所有條形係列類的抽象父級類
QAbstractSeries	用於所有 Qt Chart 係列的基類
QAreaLegendMarker	Legend marker for an area series
QAreaSeries	在區域圖錶中呈現數據
QBarCategoryAxis	將類彆添加到圖錶軸
QBarLegendMarker	Legend marker for a bar series
QBarSeries	將一係列數據按類彆分組呈現為垂直條形
QBarSet	錶示條形圖錶中的一組條形
QBoxPlotLegendMarker	Legend marker for a box plot series
QBoxPlotSeries	Presents data in box-and-whiskers charts
QBoxSet	Represents one item in a box-and-whiskers chart
QCandlestickLegendMarker	Legend marker for a candlestick series
QCandlestickModelMapper	Abstract model mapper class for candlestick series
QCandlestickSeries	Presents data as candlesticks
QCandlestickSet	Represents a single candlestick item in a candlestick chart
QCategoryAxis	Places named ranges on the axis
QChart	管理圖錶的係列、圖例和軸的圖形錶示
QChartView	可以顯示圖錶的獨立 Widget
QColorAxis	Displays a color scale as one of the chart's axes
QDateTimeAxis	Adds dates and times to a chart's axis
QHBarModelMapper	Horizontal model mapper for bar series
QHBoxPlotModelMapper	Horizontal model mapper for box plot series
QHCandlestickModelMapper	Horizontal model mapper for a candlestick series
QHPieModelMapper	Horizontal model mapper for pie series
QHXYModelMapper	Horizontal model mapper for line, spline, and scatter series
QHorizontalBarSeries	Presents a series of data as horizontal bars grouped by category
QHorizontalPercentBarSeries	Presents a series of categorized data as a percentage of each category
QHorizontalStackedBarSeries	Presents a series of data as horizontally stacked bars, with one bar per category
QLegend	顯示圖錶的圖例
QLegendMarker	Abstract object that can be used to access markers within a legend
QLineSeries	以綫圖錶形式呈現數據
QLogValueAxis	Adds a logarithmic scale to a chart's axis
QPercentBarSeries	Presents a series of categorized data as a percentage of each category
QPieLegendMarker	Legend marker for a pie series
QPieSeries	Presents data in pie charts
QPieSlice	Represents a single slice in a pie series
QPolarChart	Presents data in polar charts
QScatterSeries	Presents data in scatter charts
QSplineSeries	以樣條綫圖錶形式呈現數據
QStackedBarSeries	Presents a series of data as vertically stacked bars, with one bar per category
QVBarModelMapper	Vertical model mapper for bar series
QVBoxPlotModelMapper	Vertical model mapper for box plot series
QVCandlestickModelMapper	Vertical model mapper for a candlestick series
QVPieModelMapper	Vertical model mapper for pie series
QVXYModelMapper	Vertical model mapper for line, spline, and scatter series
QValueAxis	將值添加到圖錶軸
QXYLegendMarker	Legend marker for a line, spline, or scatter series
QXYSeries	Base class for line, spline, and scatter series

詳細描述

Charts API 構建於 Qt 圖形視圖框架之上。Charts 可以顯示為 QGraphicsWidget 使用 QChart 類。不管怎樣，還有方便類 QChartView ，其是 QWidget 基於。這些使我們能夠快速將 Qt Charts 用作正常 Qt 小部件。

注意： The Qt Charts module is in the maintenance phase. For new projects, consider using the Qt Graphs module. To render 2D charts, QtGraphs 使用 Qt Quick 形狀 , which is a more modern GUI technology compared to the outdated Qt Graphics View Framework used by the Qt Charts module.

Using a Qt module's C++ API requires linking against the module library, either directly or through other dependencies. Several build tools have dedicated support for this, including CMake and qmake.

注意： 采用 Qt Creator 的 Qt Quick 應用程序嚮導創建的工程是基於 Qt Quick 2 的模闆使用 QGuiApplication 默認情況下。所有這種 QGuiApplication 實例在工程中均必須被替換采用 QApplication 因為模塊依賴於 Qt 的圖形視圖框架為渲染。

要將模塊用於 CMake，使用 find_package() 命令定位所需模塊組件在 Qt6 包：

find_package(Qt6 COMPONENTS Charts REQUIRED)
target_link_libraries(mytarget PRIVATE Qt6::Charts)

要采用 qmake 構建模塊，將模塊添加作為值對於 QT 變量在工程的 .pro 文件：

QT += charts

各圖錶類型的錶示通過 QAbstractSeries 派生類。要創建圖錶，用戶必須使用相關係列類的實例並將它添加到 QChart 實例。

QLineSeries* series = new QLineSeries();
series->append(0, 6);
series->append(2, 4);
...
chartView->chart()->addSeries(series);
chartView->chart()->createDefaultAxes();