int XvSelectPortNotify(Display *dpy, XvPortID port, Bool onoff);
ARGUMENTS
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.
DESCRIPTION
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).