NS_ENSURE_ARG_POINTER(aEventStatus); if (nsEventStatus_eConsumeNoDefault == *aEventStatus)
if (nsEventStatus_eConsumeNoDefault == aEventStatus) {
NS_METHOD nsCheckboxControlFrame::HandleEvent(nsIPresContext* aPresContext,                                               nsGUIEvent* aEvent,                                              nsEventStatus* aEventStatus){  NS_ENSURE_ARG_POINTER(aEventStatus);  if (nsEventStatus_eConsumeNoDefault == *aEventStatus)    return NS_OK;  if (nsFormFrame::GetDisabled(this))    return NS_OK;  if (NS_MOUSE_LEFT_BUTTON_UP == aEvent->message) {    MouseUp(aPresContext);  }  return(nsNativeFormControlFrame::HandleEvent(aPresContext, aEvent, aEventStatus));}