How to get XP style themed splitter bar ?

I've been looking at Mike Dunn's CodeProject WTL Splitter Windows
article (Part VII), and have been trying to replicate the look of the
last window on the right under the section "Effects of
WS_EX_CLIENTEDGE" (and just above the "Message routing" section).

Unfortunately, while other window elements are themed (eg. status bar,
window resize grabber on bottom right of window), the splitter itself
is not. I have tried various combinations of WS_EX_CLIENTEDGE on the
different window, as explained in his article with no luck. The best I
can do is create the splitters shown in the screenshots on the left of
the page.

I used the WTL wizard to create a basic window without a view. I then
followed his instructions and created a vertical splitter window, and
put a rich edit control in each pane.

Any ideas on how to get the splitter window themed ?

-- 
Best regards,
Richard B.



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