How can i get the data from my mythread object back to MainWindow.?

[deleted286]

That queue variable belongs to your mythread class. So I cannot do any operations with queue.I want to access the datas into queue. They are in different classes. How can i do it?

mythread.h

class mythread: public QThread
{
    Q_OBJECT

public:
    mythread(QObject* parent = nullptr);
    ~mythread();
    void run();

signals:
    void writingDone();
public slots:
    void writeData();
private:
    QQueue<double> queue;

};


#endif // MYTHREAD_H

mainwindow.cpp

void MainWindow::Timer_Slot()
{
    static float q_x;
    if(!queue.isEmpty())
    {
        double num=queue.dequeue();
        q_x += 0.1;
        series->append(q_x, num);
        chart->update();

    }

}

[jsulm]

@suslucoder said in How can i get the data from my mythread object back to MainWindow.?:

How can i do it?

Using signals/slots...

[deleted286]

@jsulm I cant write the code for it, can you help me

[jsulm]

@suslucoder I'm not going to write code for you. In your other thread @SGaist posted a link to signal/slot documentation. There is an example for a signal and a slot with a parameter. Do it like shown there...

[deleted286]

@jsulm ok.

[Christian Ehrlicher]

@suslucoder Please stop deleting solved topics!

[deleted286]

@Christian-Ehrlicher how can i check, whether the queue is empty or not? I connect queue object with signal and slot. But there is still no data in chart. It gives
QtCharts::QLineSeries(0x2e720e0)

Datas could not add series, is it?

[jsulm]

@suslucoder Do you actually read documentation? https://doc.qt.io/qt-5/qxyseries.html#count

[deleted286]

@jsulm Yes, i did.

[J.Hilk]

@suslucoder