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QT ObjectThread moveToThread多线程操作

        QT多线程专栏共有15篇文章，从初识线程到、QMutex锁、QSemaphore信号量、Emit、Sgnals、Slot主线程子线程互相传值同步变量、QWaitCondition、事件循环、QObjects、线程安全、线程同步、线程异步、QThreadPool线程池、ObjectThread多线程操作、 moveToThread等线程操作进行了全面！深入！的研究和详细的说明

        本文实现了QObjectThread多线程的使用示例，新建了四个线程同时绑定了QTextEdit进行输出，moveToThread也有详细代码教程示例。

QT ObjectThread moveToThread多线程操作-LMLPHP

QT ObjectThread moveToThread多线程操作-LMLPHP

QT ObjectThread moveToThread多线程操作目录

1 新建界面

​编辑

2 mainwindow.h

3 mainwindow.cpp

4 WorkObject.h

5 WorkObject.cpp

6 moveToThread

6.1 效果

6.2 ObjectThread.h

6.3 ObjectThread.cpp

7 mainwindow.h

8 mainwindow.cpp

9 多线程的各种操作

1 新建界面

        新建四个QTextEdit控件两个按钮

QT ObjectThread moveToThread多线程操作-LMLPHP

2 mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QTimer>
#include <QThread>
#include <QCloseEvent>
#include "WorkObject.h"
#pragma execution_character_set("utf-8")

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

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

    void editInsertText1(QString strText);
    void editInsertText2(QString strText);
    void editInsertText3(QString strText);
    void editInsertText4(QString strText);
private slots:
    void on_pushButton_clicked();

    void on_pushButton_2_clicked();

private:
    Ui::MainWindow *ui;

    WorkObject* m_workList[4];
    QThread m_thread[4];

    QString Title;
    QString Version;
    QString BlogText;
};
#endif // MAINWINDOW_H

3 mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    Title = "QT QObjectThread  CSDN 双子座断点 ";
    Version = "V 1.0 ";
    BlogText = "https://blog.csdn.net/qq_37529913?type=lately/";
    setWindowTitle(Title + Version + BlogText);

    m_workList[0]=new WorkObject(ui->textEdit);
    m_workList[1]=new WorkObject(ui->textEdit_2);
    m_workList[2]=new WorkObject(ui->textEdit_3);
    m_workList[3]=new WorkObject(ui->textEdit_4);

    m_workList[0]->moveToThread(&m_thread[0]);
    m_workList[1]->moveToThread(&m_thread[1]);
    m_workList[2]->moveToThread(&m_thread[2]);
    m_workList[3]->moveToThread(&m_thread[3]);

    connect(&m_thread[0],SIGNAL(started()),m_workList[0],SLOT(starWork()));
    connect(&m_thread[1],SIGNAL(started()),m_workList[1],SLOT(starWork()));
    connect(&m_thread[2],SIGNAL(started()),m_workList[2],SLOT(starWork()));
    connect(&m_thread[3],SIGNAL(started()),m_workList[3],SLOT(starWork()));

}

MainWindow::~MainWindow()
{
    delete ui;
}


void MainWindow::on_pushButton_clicked()
{
    m_workList[0]->startThread();
    m_workList[1]->startThread();
    m_workList[2]->startThread();
    m_workList[3]->startThread();

    m_thread[0].start();
    m_thread[1].start();
    m_thread[2].start();
    m_thread[3].start();

}

void MainWindow::on_pushButton_2_clicked()
{

    m_workList[0]->stopThread();
    m_workList[1]->stopThread();
    m_workList[2]->stopThread();
    m_workList[3]->stopThread();

    QTimer::singleShot(1*1000,&m_thread[0],SLOT(terminate()));
    QTimer::singleShot(1*1000,&m_thread[1],SLOT(terminate()));
    QTimer::singleShot(1*1000,&m_thread[2],SLOT(terminate()));
    QTimer::singleShot(1*1000,&m_thread[3],SLOT(terminate()));

}

4 WorkObject.h

#ifndef WORKOBJECT_H
#define WORKOBJECT_H

#include <QObject>
#include <QTime>
#include <QDebug>
#include <QThread>
#include <QTextEdit>

#pragma execution_character_set("utf-8")

QT_BEGIN_NAMESPACE
class QListWidget;
QT_END_NAMESPACE


class WorkObject : public QObject
{
    Q_OBJECT
public:
    WorkObject(QTextEdit *listEdit,QObject *parent = 0);
    ~WorkObject();

    void stopThread();
    void startThread();
private:
  QTextEdit *m_listEdit;
  bool m_runStatus;

public slots:
  void starWork();//开始工作
};

#endif // WORKOBJECT_H

5 WorkObject.cpp

#include "WorkObject.h"

WorkObject::WorkObject(QTextEdit *listEdit, QObject *parent)
  : QObject(parent)
{
    m_listEdit=listEdit;
    m_runStatus=true;
}

WorkObject::~WorkObject()
{
}

void WorkObject::starWork()
{
    while (true)
    {
        if(!m_runStatus){
            break;
        }
        QString msg="ThreadId:" + QString::number((unsigned int)QThread::currentThreadId()) + " " + " Time:"+QTime::currentTime().toString("HH:mm:ss");
        m_listEdit->insertPlainText(msg + "\n");
        QThread::sleep(1);
    }
}

void WorkObject::stopThread()
{
    m_runStatus=false;
}

void WorkObject::startThread()
{
    m_runStatus=true;
}



//#include "WorkObject.h"

//WorkObject::WorkObject(QObject *parent)
//  : QObject(parent)
//{
//}

//WorkObject::~WorkObject()
//{
//  qDebug() << "WorkObject 销毁" << endl;
//}

//void WorkObject::objWork()
//{
//  for (int i = 0; i < 1000; ++i)
//  {
//    qDebug() << i << endl;
//  }
//  emit workFinished();
//}

//void WorkObject::starWork()
//{
//  emit workStart();
//  objWork();
//}

6 moveToThread

        以下附加核心代码、全部代码请参考最后。

6.1 效果

QT ObjectThread moveToThread多线程操作-LMLPHP

 

6.2 ObjectThread.h

#ifndef OBJECTTHREAD_H
#define OBJECTTHREAD_H

#include <QObject>
#include <QThread>
#include <QDebug>

#pragma execution_character_set("utf-8")

class ObjectThread : public QObject
{
    Q_OBJECT

public:
    ObjectThread(QObject *parent = nullptr);
    ~ObjectThread();

public:
    void stopThread();
    void startThread();

public slots:
    void slotStart();

private:
   bool m_runStatus;
};

#endif // OBJECTTHREAD_H

6.3 ObjectThread.cpp

#include "ObjectThread.h"
ObjectThread::ObjectThread(QObject *parent): QObject(parent)
{
    m_runStatus = false;
}
ObjectThread::~ObjectThread()
{

}

void ObjectThread::stopThread()
{
    m_runStatus=false;
}

void ObjectThread::startThread()
{
    m_runStatus=true;
}


void ObjectThread::slotStart()
{
    int i = 0;
    qDebug()<<"子线程 id"<<QThread::currentThreadId();
    while (true)
    {
        if(!m_runStatus){
            break;
        }
        qDebug()<<"线程自增：" + QString::number(++i);
        QThread::sleep(1);
    }

}

7 mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QTimer>
#include <QThread>
#include <QCloseEvent>
#include "WorkObject.h"
#include "ObjectThread.h"

#pragma execution_character_set("utf-8")

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

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

    void editInsertText1(QString strText);
    void editInsertText2(QString strText);
    void editInsertText3(QString strText);
    void editInsertText4(QString strText);
private slots:
    void on_pushButton_clicked();

    void on_pushButton_2_clicked();


private:
    Ui::MainWindow *ui;

    QThread thread;
    ObjectThread* object;

//    WorkObject* m_workList[4];
//    QThread m_thread[4];

    QString Title;
    QString Version;
    QString BlogText;
};
#endif // MAINWINDOW_H

8 mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    Title = "QT QObjectThread  CSDN 双子座断点 ";
    Version = "V 1.0 ";
    BlogText = "https://blog.csdn.net/qq_37529913?type=lately/";
    setWindowTitle(Title + Version + BlogText);


    object = new ObjectThread;

    object->moveToThread(&thread);

    connect(&thread,SIGNAL(started()),object,SLOT(slotStart()));


//    m_workList[0]=new WorkObject(ui->textEdit);
//    m_workList[1]=new WorkObject(ui->textEdit_2);
//    m_workList[2]=new WorkObject(ui->textEdit_3);
//    m_workList[3]=new WorkObject(ui->textEdit_4);

//    m_workList[0]->moveToThread(&m_thread[0]);
//    m_workList[1]->moveToThread(&m_thread[1]);
//    m_workList[2]->moveToThread(&m_thread[2]);
//    m_workList[3]->moveToThread(&m_thread[3]);

//    connect(&m_thread[0],SIGNAL(started()),m_workList[0],SLOT(starWork()));
//    connect(&m_thread[1],SIGNAL(started()),m_workList[1],SLOT(starWork()));
//    connect(&m_thread[2],SIGNAL(started()),m_workList[2],SLOT(starWork()));
//    connect(&m_thread[3],SIGNAL(started()),m_workList[3],SLOT(starWork()));



}

MainWindow::~MainWindow()
{
    delete ui;
}


void MainWindow::on_pushButton_clicked()
{

    object->startThread();
    //object->slotStart();
    thread.start();



//    m_workList[0]->startThread();
//    m_workList[1]->startThread();
//    m_workList[2]->startThread();
//    m_workList[3]->startThread();

//    m_thread[0].start();
//    m_thread[1].start();
//    m_thread[2].start();
//    m_thread[3].start();

}

void MainWindow::on_pushButton_2_clicked()
{
    object->stopThread();
    thread.quit();
    thread.wait();

//    delete thread;
//    thread = NULL;

//    m_workList[0]->stopThread();
//    m_workList[1]->stopThread();
//    m_workList[2]->stopThread();
//    m_workList[3]->stopThread();

//    QTimer::singleShot(1*1000,&m_thread[0],SLOT(terminate()));
//    QTimer::singleShot(1*1000,&m_thread[1],SLOT(terminate()));
//    QTimer::singleShot(1*1000,&m_thread[2],SLOT(terminate()));
//    QTimer::singleShot(1*1000,&m_thread[3],SLOT(terminate()));

}

9 多线程的各种操作

以下文章均为作者原创文章，看完记得收藏、关注加👍

线程、进程、多线程、线程池一文看懂从此秒变大佬！：深入理解线程、进程、多线程、线程池_双子座断点的博客-CSDN博客

QT 初识线程(简单实现)：https://blog.csdn.net/qq_37529913/article/details/110127940

QT QMutex使用详解：https://blog.csdn.net/qq_37529913/article/details/110187452

QT 线程之QSemaphore(深入理解)：https://blog.csdn.net/qq_37529913/article/details/110187121

QT线程 Emit、Sgnals、Slot详细解释：https://blog.csdn.net/qq_37529913/article/details/110211435

QT 线程之QWaitCondition(深入理解)：https://blog.csdn.net/qq_37529913/article/details/110212704

Qt 多线程之线程事件循环(深入理解)：https://blog.csdn.net/qq_37529913/article/details/110229382

QT线程之QObjects(深入理解)：https://blog.csdn.net/qq_37529913/article/details/110228837

QT线程之可重入与线程安全(深入理解)：https://blog.csdn.net/qq_37529913/article/details/110224166

QT 主线程子线程互相传值：QT 主线程子线程互相传值_双子座断点的博客-CSDN博客_qt主线程给子线程传数据

QT线程同步与异步处理：QT线程同步与异步处理_双子座断点的博客-CSDN博客_qt异步线程

QT 多线程之线程池QThreadPool(深入理解)：QT 多线程之线程池QThreadPool(深入理解)_双子座断点的博客-CSDN博客_qthreadpool

QT之浅拷贝、深拷贝、隐式共享(深度理解必看文章)：https://blog.csdn.net/qq_37529913/article/details/110235596QT 隐式共享机制对STL样式迭代器的影响：https://blog.csdn.net/qq_37529913/article/details/110252454
 

深入理解线程、进程、多线程、线程池_线程和进程和线程池_双子座断点的博客-CSDN博客

06-28 09:19
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