XvSelectPortNotify - enable or disable XvPortNotify events

dpy     Specifies the connection to the X server.

       port    Specifies  the  port  for  which  PortNotify  events  are to be generated when its attributes are
               changed using XvSetPortAttribute(3)

       onoff   Specifies whether notification is to be enabled or disabled.

XvSelectPortNotify(3)  enables  or  disables  PortNotify  event  delivery  to  the   requesting   client.
       XvPortNotify(3) events are generated when port attributes are changed using XvSetPortAttribute(3).

       [XvBadPort]
               Generated if the requested port does not exist.

       XvSelectPortNotify - enable or disable XvPortNotify events

       [Success]
               Returned if XvSelectPortNotify(3) completed successfully.

       [XvBadExtension]
               Returned if the Xv extension is unavailable.

       [XvBadAlloc]
               Returned if XvSelectPortNotify(3) failed to allocate memory to process the request.

XvSetPortNotify(3), XvSetPortAttribute(3), XvPortNotify(3)

X Version 11                                      libXv 1.0.11                             XvSelectPortNotify(3)

#include<X11/extensions/Xvlib.h>intXvSelectPortNotify(Display*dpy,XvPortIDport,Boolonoff);