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#ifndef THREAD_H
#define THREAD_H#include <QObject>class Thread :public QObject
{Q_OBJECT
public:Thread();~Thread();void Thread_Fun(void);
};#endif // THREAD_H

#include "outputlogthread.h"
#include <QDebug>
#include <QThread>
Thread::Thread()
{qDebug()<<"Thread构造函数ID:"<<QThread::currentThreadId();
}Thread::~Thread()
{}void Thread::Thread_Fun()
{qDebug()<<"子线程功能函数ID:"<<QThread::currentThreadId();
}

主线程

#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include <QMainWindow>
#include"outputlogthread.h"QT_BEGIN_NAMESPACE
namespace Ui {
class MainWindow;
}
QT_END_NAMESPACEclass MainWindow : public QMainWindow
{Q_OBJECTpublic:MainWindow(QWidget *parent = nullptr);~MainWindow();signals:void ToThread(); // 信号
public:QThread *Thread_Test;Thread *thread_class;
private:Ui::MainWindow *ui;
};
#endif // MAINWINDOW_H

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include<QThread>
MainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow)
{ui->setupUi(this);Thread_Test = new QThread;thread_class = new Thread;connect(this,&MainWindow::ToThread,thread_class,&Thread::Thread_Fun);thread_class->moveToThread(Thread_Test);//下面两个是一样的，都可以调用Thread_Test->start();// emit ToThread();}MainWindow::~MainWindow()
{delete ui;
}