Using the scrollwheel

Alright so I used the Customize Simple Scrollbar tutorial and made my scrollbar, but now I want to make it so that you can use the scrollwheel and so you can click on the scrollbackground to go up and down the scrollbar just like you can in a normal OS window…(I did notice at the end of the tutorial there were 2 links to code that other people had wrote for the scrollwheel and such, but when I tried to use that code it didn’t work) So does anyone know a simple way to implement what I’m trying to do? Thanks! :thumb:

(here is my code for my scrollbar - aka: attached .txt file)