How do I properly implement a “minimize to tray” function in Qt?

Question

How do I properly implement a \"minimize to tray\" function in Qt?

I tried the following code inside QMainWindow::changeEvent(QEvent *e), but the window

Answer 1

I have found that the showMinimized() slot works without a QTimer delay, so you can use code like:

mw->show();
if ( qApp->arguments().contains( "--startHidden" ) )
  mw->showMinimized();

in your main() to show a main window and immediately iconize it, when desired.