Qt 继承object 多线程例子

#include "mainwindow.h" #include "ui_mainwindow.h" #include<QDebug> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) , ui(new Ui::MainWindow) { ui->setupUi(this); mythread *my_thread = new mythread(); my_thread->moveToThread(&workthread); // 信号和槽 QObject::connect(&workthread, &QThread::finished, my_thread, &QObject::deleteLater); // 线程结束，自动删除对象 QObject::connect(this,&MainWindow::sendsignal, my_thread,&mythread::test);// 发送信号 到线程 槽函数 QObject::connect(my_thread,&mythread::ID, this,&MainWindow::GetID); workthread.start(); } MainWindow::~MainWindow() { delete ui; workthread.quit(); workthread.wait(); } void MainWindow::on_pushButton_clicked() { qDebug()<< "主程序 "<<(int)QThread::currentThreadId(); emit sendsignal(); } void MainWindow::GetID(QString ID) { ui->label->setText(ID); }