I've created a theme for a RadPanel and a separate theme for a Vertical Scroll bar, how can I apply the scroll bar theme to the RadPanel? At current if I turn on AutoScroll and fill up the panel I see the standard Windows scrollbar.
You can find the answer to your question in your support ticket.
However, for those who may be interested in the topic, I am posting the answer here as well:
Currently, RadPanel does not support displaying our themeable RadScrollBarElements when AutoScroll is true - you get only the default ones provided by your Operating System.
However, with the help of a RadScrollBar control and one additional RadPanel to hold your controls, you can get the desired behavior - having themeable RadScrollBars in your RadPanel. I am attaching a sample project which demonstrates the whole approach.