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32 lines
849 B
32 lines
849 B
#include "mainwindow.h"
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#include <QtCharts>
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#include "./ui_mainwindow.h"
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// 两种引入命名空间方法
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// using namespace QtCharts; // 使用unsing引入命名空间
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QT_CHARTS_USE_NAMESPACE // 使用内置宏引入命名空间
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MainWindow::MainWindow(QWidget* parent)
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: QMainWindow(parent), ui(new Ui::MainWindow) {
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ui->setupUi(this);
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QChartView* chartView = new QChartView(this);
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QLineSeries* series = new QLineSeries();
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for (quint32 i = 0; i < 100; i++) {
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// 参数 x 为循环自增变量 i，参数 y 为正弦函数Y值
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series->append(i, sin(static_cast<double>(0.6f * i)));
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}
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// 将系列添加到图表
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chartView->chart()->addSeries(series);
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// 基于已添加到图表的 series 来创建默认的坐标轴
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chartView->chart()->createDefaultAxes();
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}
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MainWindow::~MainWindow() { delete ui; }
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