In that case you need to modify the RadPaneStyle. Simply replace the style of PaneHeader in my previous example with this:
"2 0 0 0"
I hope this helps.
TRY TELERIK'S NEWEST PRODUCT - EQATEC APPLICATION ANALYTICS for WPF.
Learn what features your users use (or don't use) in your application. Know your audience. Target it better. Develop wisely.
Sign up for Free application insights >>