How to make sprite or layer disappear as scroll moves up?

cocos2d-x C++
#1

Hi,

I can’t figure out how to make part of the layer disappear when I scroll it up or down after it scrolls to certain part of the screen….
Is there way to do this?

#2

Nobody knows this?….

I think I have change some of the implementations on CCScrollLayer but I just don’t have any idea to do it…
Could anyone make some suggestions?

Thank you