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RedHat 9 (Linux i386) - man page for xvqueryextension (redhat section 3X)

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XvQueryExtension(3X)							     XvQueryExtension(3X)

       XvQueryExtension - return version and release of extension

       #include <X11/extensions/Xvlib.h>

       XvQueryExtension(dpy, p_version, p_release,
	    p_request_base, p_event_base, p_error_base)

       Display *dpy;
       unsigned int *p_version, *p_release;
       unsigned int *p_request_base, *p_event_base, *p_error_base;

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

       p_release      Pointer to where the release 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

       XvQueryExtension(3X) 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.

Returned Values
	       Returned if XvQueryExtension(3X) completed successfully.

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

	       Returned if XvQueryExtension(3X) failed to allocate memory to process the request.

XFree86 			      Version Version 4.3.0		     XvQueryExtension(3X)
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