XpQueryExtension

XpQueryExtension(3Xp)	       XPRINT FUNCTIONS		XpQueryExtension(3Xp)



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.



							XpQueryExtension(3Xp)