QThread内部的Qt C++计时器，并将数据从QThread发送到GUI线程

// MyThread.h

#include <QThread>
#include <QTimer>

class MyThread : public QThread
{
    Q_OBJECT

public:
    explicit MyThread(QObject *parent = nullptr);
    void run() override;

signals:
    void dataReady(int data);

private:
    QTimer *timer;
    int counter;
};

// MyThread.cpp

#include "MyThread.h"

MyThread::MyThread(QObject *parent) : QThread(parent)
{
    timer = new QTimer(this);
    counter = 0;

    connect(timer, &QTimer::timeout, [this]() {
        // 发送数据到GUI线程
        emit dataReady(counter);
        counter++;
    });
}

void MyThread::run()
{
    // 启动定时器，每1000毫秒触发一次
    timer->start(1000);

    exec();
}

// MainWindow.h

#include <QMainWindow>

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = nullptr);

public slots:
    void onDataReady(int data);

private:
    // ...
};

// MainWindow.cpp

#include "MainWindow.h"

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
{
    // ...

    MyThread *thread = new MyThread(this);

    connect(thread, &MyThread::dataReady, this, &MainWindow::onDataReady);

    thread->start();
}

void MainWindow::onDataReady(int data)
{
    // 在GUI线程中处理接收到的数据
    // ...
}