ActiveEvent and ResizeEvent

[manveru]

Just so I don't forget, there are a couple more, but that's what I needed right now:

// Returns ActiveEvent or nil if event has other type
func (event *Event) Active() *ActiveEvent {
  if event.Type == ACTIVEEVENT {
    return (*ActiveEvent)(cast(event))
  }

  return nil
}

// Returns ResizeEvent or nil if event has other type
func (event *Event) Resize() *ResizeEvent {
  if event.Type == VIDEORESIZE {
    return (*ResizeEvent)(cast(event))
  }

  return nil
}