how to know whether particular port number is free or not Post: 29673

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xvungrabport

XvUngrabPort(3) 						  libXv Functions						   XvUngrabPort(3)

NAME

       XvUngrabPort - release port grabbed for video operation

SYNOPSIS

       #include <X11/extensions/Xvlib.h>

       int XvUngrabPort(Display *dpy, XvPortID port, Time time);

ARGUMENTS

       dpy     Specifies the connection to the X server.

       port    Specifies the port to be released.  If the port had not been previously grabbed, the request is ignored.

       time    Specifies the request timestamp.

DESCRIPTION

       XvUngrabPort(3)
	releases a grabbed port.  If time specifies a time before the last XvGrabPort(3) was executed, the request is ignored.

RETURN VALUES

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

       [XvBadExtension]
	       Returned if the Xv extension is unavailable.

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

DIAGNOSTICS

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

SEE ALSO

       XvGrabPort(3)

X Version 11							    libXv 1.0.7 						   XvUngrabPort(3)

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