QPushButton button("Animated Button");
 button.show();

 QPropertyAnimation animation(&button, "geometry");
 animation.setDuration(10000);

 animation.setKeyValueAt(0, QRect(0, 0, 100, 30));
 animation.setKeyValueAt(0.8, QRect(250, 250, 100, 30));
 animation.setKeyValueAt(1, QRect(0, 0, 100, 30));

 animation.start();