Hello everyone!
Does anyone have issues with the Wayland compositor? Here I have a Linux + Weston + Wayland machine with a small integrated LCD display (800x480) and an external HDMI monitor (1920x1080).
My goal is to programmatically select the screen on which showing a QFrame, but no matter what I do it appears on the main display. Here's an example of my attempts:


Qt Code: 
  1. bool Manager::StartOnScreen(int screenIdx)
  2. {
  3.     _desktopWidget = QApplication::desktop();
  4.  
  5.     //Check if requested screen is available
  6.     if(screenIdx >= _desktopWidget->screenCount())
  7.     {
  8.         qDebug() << "Screen index out of range";
  9.         return false;
  10.     }
  11.  
  12.     QWidget* screen = _desktopWidget->screen(screenIdx);
  13.     QFrame* mainFrame = new QFrame();
  14.  
  15.     //Set frame color
  16.     if(screenIdx == 0)
  17.         mainFrame->setStyleSheet("background-color:rgb(0, 0, 254);");
  18.     else
  19.         mainFrame->setStyleSheet("background-color:rgb(254, 0, 0);");
  20.  
  21.     int width = screen->geometry().width();
  22.     int height = screen->geometry().height();
  23.     int x = screen->geometry().x();
  24.     int y = screen->geometry().y();
  25.  
  26.     qDebug() << "Screen config #" + QString::number(screenIdx) + ": position=" + QString::number(x) + "x" + QString::number(y) + " size=" +QString::number(width) + "x" + QString::number(height);
  27.  
  28.     //Set frame screen and geometry
  29.     mainFrame->setGeometry(screen->geometry());
  30.  
  31.     //Show the frame (windowed)
  32.     mainFrame->show();
  33.  
  34.     //Show the frame (fullscreen)
  35.     //mainFrame->showFullScreen();
  36.  
  37.     //Try to move the frame with setScreen
  38.     //mainFrame->windowHandle()->setScreen(qApp->screens().at(screenIdx));
  39.  
  40.     return true;
  41. }
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