Hello,

i'm reading the tutorial about QConcurrent in the doc, i am not sure to understand something: the QLabel is added to the layout, and then we launch the concurrent function to scale the images :

http://doc.qt.nokia.com/4.7/qtconcur...aling-cpp.html

Qt Code: 
  1. int dim = sqrt(qreal(files.count())) + 1;
  2.      for (int i = 0; i < dim; ++i) {
  3.          for (int j = 0; j < dim; ++j) {
  4.              QLabel *imageLabel = new QLabel;
  5.              imageLabel->setFixedSize(imageSize,imageSize);
  6.              imagesLayout->addWidget(imageLabel,i,j);
  7.              labels.append(imageLabel);
  8.          }
  9.      }
  10.  
  11.      // Use mapped to run the thread safe scale function on the files.
  12.      imageScaling->setFuture(QtConcurrent::mapped(files, scale));
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unless i'm missing something in the code, it seems that the asynchronous function scale the images only after they are onscreen. So i am not sure to understand where i'm wrong.

Thanks for your help