Qt官方示例-K线图

QCandlestickSeries *acmeSeries = new QCandlestickSeries();
acmeSeries->setName("Acme Ltd");
acmeSeries->setIncreasingColor(QColor(Qt::green));
acmeSeries->setDecreasingColor(QColor(Qt::red));

QChart *chart = new QChart();
chart->addSeries(acmeSeries);
chart->setTitle("Acme Ltd Historical Data (July 2015)");

QCandlestickSet *set = dataReader.readCandlestickSet();
if (set) {
    acmeSeries->append(set);

const qreal timestamp = strList.at(0).toDouble();
const qreal open = strList.at(1).toDouble();
const qreal high = strList.at(2).toDouble();
const qreal low = strList.at(3).toDouble();
const qreal close = strList.at(4).toDouble();
//! [3]

//! [4]
QCandlestickSet *candlestickSet = new QCandlestickSet(timestamp);
candlestickSet->setOpen(open);
candlestickSet->setHigh(high);
candlestickSet->setLow(low);
candlestickSet->setClose(close);

C:\Qt\{你的Qt版本}\Examples\{你的Qt版本}\charts\candlestickchart

https://doc.qt.io/qt-5/qtcharts-candlestickchart-example.html