Well, its advanced to me anyway.
Included is the link to download the sample project and exe
(Translucent_Test.exe) (too large to upload here - ~ 700k)

Run the exe to see the flickering problems.
1) The Side Nav Window will close and open with a mouse click - works fine.
2) The Top and Bottom Button (with the little arrow) scroll the buttons in
this window vertically - too much flickering.

I have tried InvalidateRect, regioning, screaming, drinking, smoking, to no
avail.

I'm not too worried about the sizing issues at the moment as this is just
some test code. The painting issues are the major problem.

Critism is welcome, as it usually leads to a solution.

Look at the SsScrolled() method. This method is called everytime the buttons
are moved up or down.

http://www26.brinkster.com/wzedx2/bin/Translucent_Test.zip

Any help would be appreciated.

Thanks.
PS: if the link does not work, please cut and paste into a new browser
session.