Russian Qt Forum

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();

signals:
    void StartSomthingDo();

private slots:
    void on_pbStartThread_clicked();

private:
    Ui::MainWindow *ui;
    MyThread *TestThread;
};

class MyThread : public QThread
{
    Q_OBJECT

public:
    MyThread();

public slots:
    void StartDo();
};

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

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

MyThread::MyThread()
{

}

void MainWindow::on_pbStartThread_clicked()
{
    TestThread = new MyThread();
    connect(this,SIGNAL(StartSomthingDo()),TestThread,SLOT(StartDo()));
    TestThread->start();
    emit StartSomthingDo();
}

void MyThread::StartDo()
{
    msleep(5000);
}