Ok, the scrollView did scroll to the new position, then I tried to
continuously scroll down by using the mouse wheel, but the
NSScrollView didn't work as I expected.
It will return to the the point(0.0, 0.0) at first and start to
scroll down rather then keep scrolling from point(0.0, 100.0).
If the scroll view contains a text view, then use NSText's -
(void)scrollRangeToVisible:(NSRange)range; method.
For NSView, try -scrollRectToVisible: instead. It is sort of the
focal point for all scrolling operations in NSView.
However, if the behavior persists then -- obviously -- something else
is going on. Are you setting the scrolling position from a thread,
perchance? That could cause confusion.
