I'm running a rather peculiar display configuration: 3 screens aligned horizontally with a 320 pixel overlap between each (created in xorg using Xinerama and absolute positioning). The left and right screens behave as one would expect, but the middle screen has a rather nasty black bar running down the middle where no desktop containment has spawned. There is therefore no desktop image and right-clicks don't bring up the traditional desktop menu.


red bars show where each screen begins/ends.

I'd like to be able to make this at least appear seamless. The easiest solution is to spawn a new plasmawallpaperviewer and force it to the background at the full resolution, but then I lose right-click altogether. I could also spawn it just in the black area and custom-make my desktop image.
I'm hoping for a more elegant solution, however. Perhaps a custom desktop containment that is not constrained to a particular screen, but spans the entire display surface?
I'd greatly appreciate any help brainstorming and creating a workable solution. Thanks in advance for the help.

I should mention that I'm running suse 11.2/KDE 4.3.

Activities are, by definition, tied to a particular screen. Short of editing the wallpaper there is really no way to do this, nor any plans to implement it.