Qt Charts C++ 类

用于 Qt Charts API 的 C++ 类。更多...

类

QAbstractAxis	用于专用轴类的基类
QAbstractBarSeries	用于所有条形系列类的抽象父级类
QAbstractSeries	用于所有 Qt Chart 系列的基类
QAreaLegendMarker	Legend marker for an area series
QAreaSeries	在区域图表中呈现数据
QBarCategoryAxis	将类别添加到图表轴
QBarLegendMarker	Legend marker for a bar series
QBarSeries	将一系列数据按类别分组呈现为垂直条形
QBarSet	表示条形图表中的一组条形
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	管理图表的系列、图例和轴的图形表示
QChartView	可以显示图表的独立 Widget
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	显示图表的图例
QLegendMarker	Abstract object that can be used to access markers within a legend
QLineSeries	以线图表形式呈现数据
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	以样条线图表形式呈现数据
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	将值添加到图表轴
QXYLegendMarker	Legend marker for a line, spline, or scatter series
QXYSeries	Base class for line, spline, and scatter series

详细描述

Charts API 构建于 Qt 图形视图框架之上。Charts 可以显示为 QGraphicsWidget 使用 QChart 类。不管怎样，还有方便类 QChartView ，其是 QWidget 基于。这些使我们能够快速将 Qt Charts 用作正常 Qt 小部件。

若打算在应用程序中使用 Qt Charts C++ 类，使用以下 include 和 using 指令：

#include <QtCharts>
using namespace QtCharts;

注意： 采用 Qt Creator 的 Qt Quick 应用程序向导创建的工程是基于 Qt Quick 2 的模板使用 QGuiApplication 默认情况下。所有这种 QGuiApplication 实例在工程中均必须被替换采用 QApplication 因为模块依赖于 Qt 的图形视图框架为渲染。

要链接到 Qt Charts 模块，添加此行到 qmake 工程文件：

QT += charts

各图表类型的表示通过 QAbstractSeries 派生类。要创建图表，用户必须使用相关系列类的实例并将它添加到 QChart 实例。

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