628eef6bbc
add some macros for making request handlers easier:
* REQUEST_HEAD_STRUCT() declares a struct and checks size (assuming
length field already had been swapped)
* REQUEST_FIELD_CARD16() swaps a CARD16 (word) if neccessary
* REQUEST_FIELD_CARD32() swaps a CARD32 (dword) if neccessary
How to use them:
1. move swapping of lengths field into the SProc*Dispatch() and drop it
from the individual SProc*()'s
2. put REQUEST_HEAD_STRUCT() ontop of each Proc*()
3. add REQUEST_FIELD_*() below, for all fields to be swapped and
drop their swapping from the SProc*()'s
4. clean up unnecessary wrappers (SProc*()'s just be just call the
corresponding Proc*() by now)
5. let demux SProc just swap length field and call the normal Proc*Dispatch()
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
X Server
The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.
Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders.
For a comprehensive overview of X Server and X Window System, consult the following article: https://en.wikipedia.org/wiki/X_server
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