Qt接收数据动态显示图标位置都能用什么写?具体怎么写?
时间: 2023-03-19 17:23:34 浏览: 136
Qt可以使用QChart来动态显示图表位置,可以通过QChartView来显示QChart。以下是一个简单的示例:
```cpp
// 创建QChart对象
QChart *chart = new QChart();
// 设置图表的标题
chart->setTitle("实时数据动态显示");
// 创建QLineSeries对象
QLineSeries *series = new QLineSeries(chart);
// 将QLineSeries对象添加到QChart对象中
chart->addSeries(series);
// 设置图表坐标轴的范围
chart->createDefaultAxes();
// 创建QChartView对象
QChartView *chartView = new QChartView(chart);
// 设置QChartView对象的大小
chartView->setFixedSize(800, 600);
// 显示QChartView对象
chartView->show();
// 循环添加数据并更新图表
QTimer *timer = new QTimer();
QObject::connect(timer, &QTimer::timeout, [=](){
// 生成随机数
qreal x = QRandomGenerator::global()->bounded(100);
qreal y = QRandomGenerator::global()->bounded(100);
// 添加数据
series->append(x, y);
// 设置图表坐标轴的范围
chart->axisX()->setRange(series->count()-10, series->count());
chart->axisY()->setRange(0, 100);
});
timer->start(1000); // 设置定时器间隔为1秒
```
这个示例中使用QChart和QLineSeries来显示实时数据,并使用QTimer来定时更新图表。图表的显示通过QChartView来完成。
如果需要显示动态的图标位置,可以使用QGraphicsView和QGraphicsItem来实现。具体的实现可以参考Qt官方文档中的示例:https://doc.qt.io/qt-5/qtwidgets-graphicsview-chip-example.html
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