x11r4 man page for dpmsqueryextension

DPMSQueryExtension(3)						    X FUNCTIONS 					     DPMSQueryExtension(3)

NAME
       DPMSQueryExtension - queries the X server to determine the availability of the DPMS Extension

SYNOPSIS
       cc [ flag ... ] file ... -lXext [ library ... ]
       #include <X11/extensions/dpms.h>

       Bool DPMSQueryExtension
	      (
		    Display *display,
		    int *event_base,
		    int *error_base
	      );

ARGUMENTS
       display
	      Specifies the connection to the X server

       event_base
	      Specifies the return location for the assigned base event

       error_base
	      Specifies the return location for the assigned base error

DESCRIPTION
       The  DPMSQueryExtension function queries the X server to determine the availability of the Display Power Management Signaling (DPMS) Exten-
       sion.  If the extension is available, it returns TRUE, and the event_base and error_base are set to  the  base  event  and  error  numbers,
       respectively.  Otherwise, the return value is FALSE, and the values of event_base and error_base are undefined.

RETURN VALUES
       TRUE	      The  DPMSQueryExtension  function  returns  TRUE if the extension is available, and event_base and error_base are set to the
		      base event number and base error number for the extension, respectively.

       FALSE	      The DPMSQueryExtension function returns FALSE if extension is not available, and the values of event_base and error_base are
		      undefined.

SEE ALSO
       DPMSGetVersion(3)

X Version 11							   libXext 1.0.5					     DPMSQueryExtension(3)