Russian Qt Forum

class MyThread : public QThread
{
    QTextEdit* textEdit;
    volatile int val;
  public:
    void set_textEdit(QTextEdit* p){textEdit=p;}
    void set_val(const int v){val=v;}
    void run();
};
class dlgTest: public QDialog, public Ui_dlgTest
{
    Q_OBJECT
    MyThread thread; 
  public:  
    dlgTest(QWidget *parent=0);  
  public slots:
    void  on_pbSetThread_clicked();
};
dlgTest::dlgTest(QWidget *parent):QDialog(parent)
{
  setupUi(this);
  thread.set_textEdit(textEdit);
} 
void dlgTest::on_pbSetThread_clicked()
{
  thread.set_val( spinBox->value() );
  thread.start();
}
void MyThread::run()
{
  int x;
  for (int i = 0; i <val; ++i) 
  {
    x=i*2;
    textEdit->insertHtml ("test №"+QString::number(x)+" completed"); 
  } 
} 

void MyThread::run()
{
  int x;
  for (int i = 0; i <val; ++i) 
  {
    x=i*2;
    //textEdit->insertHtml ("test №"+QString::number(x)+" completed");  -- ERROR
    emit sig_toTextEdit_insertHtml("test №"+QString::number(x)+" completed"); -- GOOD
  } 
} 

class MyThread : public QThread
{
    QTextEdit* textEdit;
    volatile int val;
  public:
    void set_textEdit(QTextEdit* p){textEdit=p;}
    void set_val(const int v){val=v;}
    void run();
  signals:
    void sendData(const QString &s);
};
class dlgTest: public QDialog, public Ui_dlgTest
{
    Q_OBJECT
    MyThread thread; 
  public:  
    dlgTest(QWidget *parent=0);  
  public slots:
    void  on_pbSetThread_clicked();
};
dlgTest::dlgTest(QWidget *parent):QDialog(parent)
{
  setupUi(this);
  thread.set_textEdit(textEdit);
  QObject::connect(&thread,  SIGNAL( sendData(const QString &)   ),
                   textEdit,   SLOT( insertHtml(const QString &) ),
                   Qt::QueuedConnection 
                   );
} 
void dlgTest::on_pbSetThread_clicked()
{
  thread.set_val( spinBox->value() );
  thread.start();
}
void MyThread::run()
{
  int x;
  for (int i = 0; i <val; ++i) 
  {
    x=i*2;
    sendData("test №"+QString::number(x)+" completed"); 
  } 
} 

void MyThread::run()
{
  int x;
  for (int i = 0; i <val; ++i) 
  {
    x=i*2;
    emit sendData("test №"+QString::number(x)+" completed"); //ничего не меняет
  } 
} 

QCoreApplication::processEvents();

void <className>::setText(const QString &text)
{
    QMutexLocker locker(&mutex);
    textEdit->setHtmlText(text);
}