1XvQueryExtension(3)        Library Functions Manual        XvQueryExtension(3)
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Name

6       XvQueryExtension - return version and release of extension
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Syntax

9       #include <X11/extensions/Xvlib.h>
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11       XvQueryExtension(dpy, p_version, p_release,
12            p_request_base, p_event_base, p_error_base)
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14       Display *dpy;
15       unsigned int *p_version, *p_release;
16       unsigned int *p_request_base, *p_event_base, *p_error_base;
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Arguments

19       p_version      Pointer  to  where  the current version number of the Xv
20                      video extension is written.
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22       p_release      Pointer to where the release  number  of  the  Xv  video
23                      extension is written.
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25       p_request_base Pointer  to  where the extension major request number is
26                      returned
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28       p_event_base   Pointer to where the extension event base is returned
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30       p_error_base   Pointer to where the extension error base is returned
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Description

33       XvQueryExtension(3) returns the version and release numbers for the  Xv
34       video  extension  currently  loaded on the system.  The extension major
35       request number, event base, and error base are also returned.
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Returned Values

38       [Success]
39               Returned if XvQueryExtension(3) completed successfully.
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41       [XvBadExtension]
42               Returned if the Xv video extension is  not  available  for  the
43               named display.
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45       [XvBadAlloc]
46               Returned  if  XvQueryExtension(3)  failed to allocate memory to
47               process the request.
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51X Version 11                      libXv 1.0.3              XvQueryExtension(3)