xfree86 man page for xvselectportnotify

XvSelectPortNotify(3X)													    XvSelectPortNotify(3X)

Name
       XvSelectPortNotify - enable or disable XvPortNotify(3X) events

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

       XvSelectPortNotify(dpy, port, onoff)

       Display *dpy;
       XvPortID port;
       Bool onoff;

Arguments
       dpy     Specifies the display screen on which the X Server is to accept requests from X clients.  If the display option is not specified, X
	       uses the display screen specified by your DISPLAY environment variable.	The display option has the format hostname:number.   Using
	       two colons (::) instead of one (:) indicates that DECnet is to be used for transport.

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

       onoff   Specifies whether notification is to be enabled or disabled.

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

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

       [XvBadExtension]
	       Returned if the Xv extension is unavailable.

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

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

See Also
       XvSetPortNotify(3X), XvSetPortAttribute(3X), XvPortNotify(3X)

XFree86 							   Version 4.7.0					    XvSelectPortNotify(3X)