freebsd man page for xvqueryextension

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 extension is written.

       p_request_base Pointer to where the extension major request number is returned

       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
       request 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 1.0.7 					       XvQueryExtension(3)