Extending XFixes Extension

[Amir Bukhari]

> Around 19 o'clock on Nov 3, "Amir Bukhari" wrote:
> 
> > The current Xserver does not give client the ability to query the server
> to
> > ask it which window belongs to (to client).
> 
> While the specification doesn't guarantee the partitioning of the resource
> ID space is the same for every client, the implementation happens to work
> that way.  So, identifying windows belonging to the same client is as
> simple as masking their IDs with the resource mask in the Display
> structure.
That is really very simple.

> 
> Formalizing that in the XFixes documentation would be reasonable (i.e., an
> X server advertising a specific XFIXES version would guarantee that the
> resource ID partitioning was the same for all clients).
This will be very valuable, so that application could use this without doubt
that is not guarantee!

Also there is a lot of the internal of Xserver are unknown for most
developers ;-)

-Amir