title: How to track where the right callout accessory view is when it was tapped on
body: <p>As you can see below I have an annotation view that has a right button.  When the user taps the right button I am presenting a popover - the problem is I don't know where the user tapped so I don't have the X and Y to display the popover accordingly.</p>
  
  <p>How do I find out where the user tapped i.e. the X and Y?</p>
  
  <pre><code>HotelAnnotationView *customPinView = [[HotelAnnotationView alloc] initWithAnnotation:theHotel reuseIdentifier:hotelPin];
  
  //The right button which allows user to see hotel information
  UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeInfoLight];
  [rightButton addTarget:self action:@selector(showDetailsForHotel:) forControlEvents:UIControlEventTouchUpInside];
  
  rightButton.tag = theHotel.id;
  customPinView.rightCalloutAccessoryView = rightButton;
  </code></pre>