mouseExited isn't called when mouse leaves trackingArea while scrolling

Question

Why mouseExited/mouseEntered isn\'t called when mouse exits from NStrackingArea by scrolling or doing animation?

I create code like this:

Mouse entered and e

Answer 1

@Michael offers a great answer, and solved my problem. But there is one thing,

if (CGRectContainsPoint([self bounds], mouseLocation))
{
    [self mouseEntered: nil];
}
else
{
    [self mouseExited: nil];
}

I found CGRectContainsPoint works in my box, not CGPointInRect,