我正在尝试编写一个压缩gui，它创建一个用于调用压缩工具的不同线程，并使用QProcess传递参数。

当使用旧的SIGNAL / SLOT样式进行连接时，信号会被扔掉，我可以对它们做出反应，但是尝试不使用SIGNAL / SLOT进行连接不会给我带来任何回音。

class CommandProcessorMT : public QObject
{
    Q_OBJECT
public:
    explicit CommandProcessorMT(QObject *parent = nullptr);
    bool cmdprocess(QString tool,QStringList params);
...
private:
    QProcess *m_Cmdprocess;
    ...

private slots:
    void processFinished(int exitCode,QProcess::ExitStatus exitStatus);
    void processErrored(QProcess::ProcessError error);
};

void CommandProcessorMT::compressionLoop()
{
    ...
    m_Cmdprocess = new QProcess(this);
    /* Connection works */
    connect(m_Cmdprocess,SIGNAL(finished(int,QProcess::ExitStatus)),this,SLOT(processFinished(int,QProcess::ExitStatus)));
    connect(m_Cmdprocess,SIGNAL(error(QProcess::ProcessError)),SLOT(processErrored(QProcess::ProcessError)));
    /* Connection doesn't work */
    connect(m_Cmdprocess,QOverload<int,QProcess::ExitStatus>::of(&QProcess::finished),&CommandProcessorMT::processFinished);
    connect(m_Cmdprocess,QOverload<QProcess::ProcessError>::of(&QProcess::error),&CommandProcessorMT::processErrored);
    while(...)
    {
        /* Do stuff */
        m_Cmdprocess->start(tool,params);
        m_Cmdprocess->waitForFinished(-1);            
    }
    emit compDone();
}

void CommandProcessorMT::processFinished(int exitCode,QProcess::ExitStatus exitStatus)
{
    qDebug() << "process Finished";
}
void CommandProcessorMT::processErrored(QProcess::ProcessError error)
{
    qDebug() << "Process Error";
}

我知道waitForFinished不好，想摆脱它（这就是为什么我现在使用Signals的原因），我的信号为什么不能正确连接？

创建线程的类：

class BatchConverter : public QMainWindow
{
    Q_OBJECT

public:
    BatchConverter(QWidget *parent = nullptr);
    ~BatchConverter() override;
    ...

private:
    Ui::BatchConverter *ui;
    CommandProcessorMT *testi;
    QThread *conversionThread;
    ...
};

BatchConverter::BatchConverter(QWidget *parent)
    : QMainWindow(parent),ui(new Ui::BatchConverter)
{
    testi = new CommandProcessorMT();
    conversionThread = new QThread();
    ...
    testi->moveToThread(conversionThread);

    // Signals to own Slots
    ...
    // Slots to own Signals
    ...
    ui->setupUi(this);
    setacceptDrops(true);
    ui->progressBar->reset();
    conversionThread->start();

}