debian man page for dpmsgetversion

DPMSGetVersion(3)						    X FUNCTIONS 						 DPMSGetVersion(3)

NAME
       DPMSGetVersion - returns the version of the DPMS extension implemented by the X server

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

       Status DPMSGetVersion
	      (
		    Display *display,
		    int *major_version,
		    int *minor_version
	      );

ARGUMENTS
       display
	      Specifies the connection to the X server

       major_version
	      Specifies the return location for the extension major version

       minor_version
	      Specifies the return location for the extension minor version

DESCRIPTION
       The DPMSGetVersion function returns the version of the Display Power Management Signaling (DPMS) extension implemented by the X server.	It
       returns a major and minor version number. The major version number will be incremented for protocol incompatible  changes,  and	the  minor
       version number will be incremented for small, upward compatible changes.

RETURN VALUES
       TRUE	      The DPMSGetVersion function returns TRUE when the extension is supported and values are returned.

       FALSE	      The DPMSGetVersion function returns FALSE when the extension is not supported.

SEE ALSO
       DPMSCapable(3), DPMSQueryExtension(3)

X Version 11							   libXext 1.3.1						 DPMSGetVersion(3)