Windows 7 RC1 and Cygwin 1.7

[Jon TURNEY]

>> 4) In multiwindow, if two programs overlap, then Aero Peek will show 
>> the correct shape for each window but the contents of one window 
>> superimposed on the other in their stacking order.
> 
> Yes, I've seen the same behaviour with the TaskSwitchXP alt+tab 
> replacement.
> This is a consequence of the way multiwindow mode is currently 
> implemented: everything is drawn onto a shadow framebuffer, and then 
> areas from that are drawn into native windows when they are exposed.  
> This means that we can only correctly draw the contents of the X window 
> at the top of the Z-order stack (as this may be occluding other X 
> windows).  There are probably solutions to this.

Forgive me for being rather too terse, but I am not sure what those solutions 
might be.  I think those solutions involve using the rootless extension 
(perhaps) or composite (definitely) to gain access to the bitmap for each 
window independently.


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