Provided by: libxp-dev_1.0.2-1ubuntu1_amd64 

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 1.0.2 XpQueryExtension(3Xp)