XpQueryExtension(3)

NAME

       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.

SYNOPSIS

             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;

ARGUMENTS

       display
              Specifies  a  pointer  to  the  Display structure; returned from
              XOpenDisplay.

       event_base_return
              The base value for X Print Service Extension events

       error_base_return
              The base value for X Print Service Extension errors.

DESCRIPTION

       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
       values.

       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.

X Version 11                      libXp 1.0.0            XpQueryExtension(3Xp)