QObject::startTimer：定时器只能用于以 QThread 启动的线程

Question

我正在尝试在工作线程的事件循环中启动计时器，但出现此错误： QObject::startTimer: Timers can only be used with threads started with QThread

这有什么问题？

#include <QObject>
#include <QThread>
#include <QTimer>

class A : public QObject
{
    Q_OBJECT
public:
    A();

private:
    QThread m_workerThread;
    QTimer m_myTimer;

};

A::A()
{
    this->moveToThread(&m_workerThread);
    m_myTimer.moveToThread(&m_workerThread);
    m_workerThread.start();
    m_myTimer.start(1000);
}

Answer 1

我想我明白了，我尝试从 GUI 线程启动计时器，在我将其移动到工作线程后，这样它似乎可以工作：

class A : public QObject
{
    Q_OBJECT
public:
    A();

private:
    QThread m_workerThread;
    QTimer m_myTimer;

public slots:
    void sl_startTimer();
};

A::A()
{
    this->moveToThread(&m_workerThread);
    m_myTimer.moveToThread(&m_workerThread);
    m_workerThread.start();
    QMetaObject::invokeMethod(this, "sl_startTimer", Qt::QueuedConnection);
}

void A::sl_startTimer()
{
    m_myTimer.start(1000);
}