#ifndef THREADWORKER_HPP
#define THREADWORKER_HPP
#include <QObject>
#include <QString>
#include <QThread>
#include <QDebug>
class ThreadWorker:public QObject
{
    Q_OBJECT
public:
    ThreadWorker() {}
public slots:
    void work(QString p1)
    {
        qDebug() << "current thread ID:" << QThread::currentThreadId();
        qDebug() << p1;
        QThread::sleep(10);
        qDebug() << "thread run finish!";
    }
};
#endif // THREADWORKER_HPP

ThreadController.hpp代碼如下:

#ifndef THREADCONTROLLER_H
#define THREADCONTROLLER_H
#include "ThreadWorker.hpp"
class ThreadController:public QObject
{
    Q_OBJECT
    QThread workerThread;
public:
    ThreadController():QObject()
    {
        ThreadWorker* threadWork = new ThreadWorker();
        // 將 threadWork 移交給 workerThread
        threadWork->moveToThread(&workerThread);
        QObject::connect(this,SIGNAL(touchWork(QString)),threadWork,SLOT(work(QString)));
        QObject::connect(&workerThread,&QThread::finished,threadWork,&QObject::deleteLater);
        workerThread.start();                //啟動線程
        qDebug()<<"current thread ID:"<<QThread::currentThreadId()<<'\n';
        emit touchWork("working");
    }
    ~ThreadController()
    {
        workerThread.quit();
        workerThread.wait();
    }
signals:
    // 發(fā)出信號觸發(fā)線程
    void touchWork(QString p1);
};
#endif // THREADCONTROLLER_H

main.cpp代碼如下:

#include <QCoreApplication>
#include "ThreadController.hpp"
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    ThreadController tc = ThreadController();
    return a.exec();
}

注意：

不能再cpp文件中使用QT的特性機制如信號槽，因為moc不會在cpp文件中處理這些機制?？梢愿?，但比較麻煩，建議將類定義在頭文件中即可。

3. QThread 示例

方法概述：

定義一個QThread的派生類，并重載run()函數，在run()函數中寫入具體的線程代碼
通過start()啟動線程

CustomThread.hpp代碼如下

#ifndef CUSTOMTHREAD_H
#define CUSTOMTHREAD_H
#include <QThread>
#include <QDebug>
class CustomThread:public QThread
{
    Q_OBJECT
public:
    CustomThread() {}
signals:
    void customThreadSignal();
public slots:
    void customThreadSlot()
    {
        qDebug()<<"current thread ID(in slot function):"<<QThread::currentThreadId()<<'\n';
    }
protected:
    void run() override
    {
        qDebug()<<"current thread ID:"<<QThread::currentThreadId()<<'\n';
        QThread::sleep(10);
        qDebug() << "thread run finish!";
        emit customThreadSignal();
    }
};
#endif // CUSTOMTHREAD_H

main.cpp代碼如下

#include <QCoreApplication>
#include "CustomThread.hpp"
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    qDebug() << "main thread ID:" << QThread::currentThreadId();
    CustomThread customThread;
    QObject::connect(&customThread,&CustomThread::customThreadSignal,&customThread,&CustomThread::customThreadSlot);
    customThread.start();
    return a.exec();
}

輸出結果：