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       XpQueryExtension  - Queries an X Server to determine if it supports the
       X Print Service Extension, and if it does, what  the  offsets  are  for
       associated events and errors.


             cc [ flag... ] file... -lXp [ library... ]
             #include <X11/extensions/Print.h>

       Bool XpQueryExtension ( display, event_base_return error_base_return )
             Display *display;
             int *event_base_return;
             int *error_base_return;


              Specifies  a  pointer  to  the  Display structure; returned from

              The base value for X Print Service Extension events

              The base value for X Print Service Extension errors.


       XpQueryExtension  determines  if  the  X  Print  Service  Extension  is
       present.  It  returns  True  if  the  extension is supported, otherwise
       False. If the extension is present, the  base  values  for  events  and
       errors are returned, and can be used to decode incoming event and error

       The X Print Service Extension is initialized on the first call to any X
       Print Service function; there is no need to explicitly initialize the X
       Print Service Extension.

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