Retrieve memory address range where the pixel data are stored at a given coordinates

Giuseppe Torelli colossus73 at
Wed Nov 29 02:02:44 PST 2006


suppose I have a range of coordinates x,y,width,height. How can I
determine the memory address range (start , end) where the pixel data
are contained at those coordinates?

I don't know If I have been clear, I need to compare that memory range
to detect changes in the root window (I know about XDamage extension).

P.S. can you please Cc the replies, I'm not subscribed to the list, thanks.

Giuseppe Torelli
Xarchiver, a Linux GTK+2 only archive manager -
Xscreencast, a DE independent desktop session recorder -
Cpsed, a Linux OpenGL 3D scene editor -

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