Scroll thumb on the ScrollPanel

[SteM]

Hi all,
i need to change the default scroll thumb on a ScrollPanel with a custom bitmap.
How can i do it ??

Thanks

[SteM]

Well, I wrote a class extending the standard JScrollPane in which I forced a new version of the JScrollBar; in the paint function I put a scaled bitmap.
Now my problem is:
which is the size & position of the up/down-arrow buttons ???

Thanks

[SteM]

Hi all,
in the same way i drawn the thumb on the scrollbar (paint() function of a custom scrollbar instance) i drawn the arrow buttons with custom bitmaps.
The problem is that when the application starts i see the new bitmaps but when i press them i see the default gray buttons !!!!
How can i solve?
How can i access to these buttons owned by the scrollbar?

Thanks

[hardwired]

You may have to write some plaf code. I would start with the BasicScrollBarUI class and look for the paintThumb method.