QImage and Qt 4.5.3

[wysota]

Can you show us the code from both threads that accesses the mutex?

Here is a mutex-free implementation, by the way:

connect(worker, SIGNAL(newImage(QImage)), widget, SLOT(drawPic(QImage)), Qt::BlockingQueuedConnection);
//...
void Widget::drawPic(QImage img){
  m_image = img;
  update();
}
 
void Widget::paintEvent(QPaintEvent *pe){
  QPainter p(this);
  p.drawImage(m_image, ...);
}

connect(worker, SIGNAL(newImage(QImage)), widget, SLOT(drawPic(QImage)), Qt::BlockingQueuedConnection);
//...
void Widget::drawPic(QImage img){
  m_image = img;
  update();
}

void Widget::paintEvent(QPaintEvent *pe){
  QPainter p(this);
  p.drawImage(m_image, ...);
}

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