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XvQueryExtension(3)		 libXv Functions	     XvQueryExtension(3)

NAME
     XvQueryExtension - return version and release of extension

SYNOPSIS
     #include <X11/extensions/Xvlib.h>

     int XvQueryExtension(Display *dpy, unsigned int *p_version,
			 unsigned int *p_revision,
			 unsigned int *p_request_base,
			 unsigned int *p_event_base,
			 unsigned int *p_error_base);

ARGUMENTS
     dpy	    Specifies the connection to the X server.

     p_version	    Pointer  to where the current version number of the Xv video
		    extension is written.

     p_revision     Pointer to where the revision number of the Xv video  exten-
		    sion is written.

     p_request_base Pointer  to  where the extension major request number is re-
		    turned

     p_event_base   Pointer to where the extension event base is returned

     p_error_base   Pointer to where the extension error base is returned

DESCRIPTION
     XvQueryExtension(3) returns the version and  release  numbers  for  the  Xv
     video  extension  currently  loaded on the system.  The extension major re-
     quest number, event base, and error base are also returned.

RETURN VALUES
     [Success]
	     Returned if XvQueryExtension(3) completed successfully.

     [XvBadExtension]
	     Returned if the Xv video extension is not available for  the  named
	     display.

SEE ALSO
     Xv(3)

X Version 11			  libXv 1.0.13		     XvQueryExtension(3)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=XvQueryExtension&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>

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