Hi !

I also have the problem with the systrayicon and minimize
so i try following ...

Qt Code: 
  1. // Overload original event-handler:
  2. bool MainWindow::event(QEvent *evt)
  3. {
  4.     // Check if Window-State changed to minimize ...
  5.     if(evt->type() == QEvent::WindowStateChange)
  6.     {
  7.         //Now check to see if the window is minimised
  8.         if (isMinimized())
  9.         {
  10.             // Call the Hide Slot after 250ms
  11.             // to prozess other events ....
  12.             qApp->processEvents();
  13.             QTimer::singleShot(250, this, SLOT(hide()));
  14.             evt->ignore();
  15.         }
  16.     }
  17.     // Call original-handler (in this case QMainWindow ...)
  18.     return QMainWindow::event(evt);
  19. }
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... this work's on windows !