In Qt5.1/Windows XP, the result is:
@
// press and hold the key
pressEvent, isAutoRepeat = false
releaseEvent, isAutoRepeat = true
pressEvent, isAutoRepeat = true
releaseEvent, isAutoRepeat = true
pressEvent, isAutoRepeat = true
releaseEvent, isAutoRepeat = true
pressEvent, isAutoRepeat = true
releaseEvent, isAutoRepeat = false
@