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X11R7.4 - man page for dpmsqueryextension (x11r4 section 3)

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DPMSQueryExtension(3)			   X FUNCTIONS			    DPMSQueryExtension(3)

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

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) Extension.	If the extension is available, it
       returns TRUE, and the event_base and error_base are set to the base event and  error  num-
       bers,  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  avail-
		      able, and the values of event_base and error_base are undefined.

SEE ALSO
       DPMSGetVersion(3)

X Version 11				  libXext 1.0.5 		    DPMSQueryExtension(3)
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