博客

1、 头文件定义。

QCPItemTracer *BeeperTracer;

2、源文件。

    BeeperTracer = new QCPItemTracer(ui->customPlot);
    BeeperTracer->setClipAxisRect(subOneRectLeft);    //先剪辑子坐标轴.
    BeeperTracer->setInterpolating(true);
    BeeperTracer->setStyle(QCPItemTracer::tsCircle);
    BeeperTracer->setPen(QPen(Qt::red));
    BeeperTracer->setBrush(Qt::red);
    BeeperTracer->setSize(24);
    BeeperTracer->position->setCoords(197,-1000);
    BeeperTracer->setLayer("overlay");

    static int qrsBeeperTime = 0;
    if((ECGStatus1&0x20)==0x20)
    {
        qrsBeeperTime = 20;
    }
    if(qrsBeeperTime>0)
    {
        qrsBeeperTime--;
        BeeperTracer->setVisible(true);
    }
    else
    {
        BeeperTracer->setVisible(false);
    }

3、效果。