QT_moveToThread_1-优快云博客

该博客介绍了如何在C++中使用QObject的moveToThread方法将对象移动到新线程，以便实现多线程编程。示例代码创建了一个movetothreadTest类，它继承自QObject，并定义了信号和槽函数，确保信号触发的槽函数在不同的线程中运行。在main函数中，创建了movetothreadTest对象并启动其所在线程，展示了主线程与信号槽线程的并发执行。

需继承QObject

#ifndef MOVETOTHREAD_H
#define MOVETOTHREAD_H

#include <QObject>
#include <QThread>
#include <QDebug>
class movetothreadTest:public QObject
{

Q_OBJECT
private:
    QThread m_Thread;
public:
    explicit movetothreadTest(QObject *parent = nullptr);
    ~movetothreadTest();
signals:
    void signalFunc(void);
public slots:
    void EmitSingalFunc(void);
    void testFunc(void);
};

#endif // MOVETOTHREAD_H

#include "movetothreadTest.h"
movetothreadTest::movetothreadTest(QObject *parent)
    : QObject(parent)
{
    moveToThread(&m_Thread);
    m_Thread.start();
    connect(this,&movetothreadTest::signalFunc,this,&movetothreadTest::testFunc);
}
movetothreadTest::~movetothreadTest()
{
    m_Thread.quit();
    m_Thread.wait();
}
void movetothreadTest::EmitSingalFunc(void)
{
    emit signalFunc();
}

void movetothreadTest::testFunc(void)
{
    qDebug()<<"testFunc thread:"<<QThread::currentThreadId()<<endl;
}

#include <QCoreApplication>
#include "movetothreadTest.h"
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    movetothreadTest M;
    qDebug()<<"main thread:"<<QThread::currentThreadId()<<endl;
    M.testFunc();
    M.EmitSingalFunc();
    return a.exec();
}

主线程直接调用与信号触发的槽函数线程不同