Tcl_DeleteCloseHandler man page on Minix

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Tcl_CreateCloseHandler(3)   Tcl Library Procedures   Tcl_CreateCloseHandler(3)

______________________________________________________________________________

NAME
       Tcl_CreateCloseHandler,	Tcl_DeleteCloseHandler - arrange for callbacks
       when channels are closed

SYNOPSIS
       #include <tcl.h>

       void
       Tcl_CreateCloseHandler(channel, proc, clientData)

       void
       Tcl_DeleteCloseHandler(channel, proc, clientData)

ARGUMENTS
       Tcl_Channel     channel	      (in)	The channel for which to  cre‐
						ate  or	 delete	 a close call‐
						back.

       Tcl_CloseProc   *proc	      (in)	The procedure to call  as  the
						callback.

       ClientData      clientData     (in)	Arbitrary  one-word  value  to
						pass to proc.
_________________________________________________________________

DESCRIPTION
       Tcl_CreateCloseHandler arranges for proc to be called when  channel  is
       closed  with Tcl_Close or Tcl_UnregisterChannel, or using the Tcl close
       command.	 Proc should match the following prototype:

	      typedef void Tcl_CloseProc(
		ClientData clientData);

       The clientData is the same  as  the  value  provided  in	 the  call  to
       Tcl_CreateCloseHandler.

       Tcl_DeleteCloseHandler  removes a close callback for channel.  The proc
       and clientData identify which close  callback  to  remove;  Tcl_Delete‐
       CloseHandler  does  nothing if its proc and clientData arguments do not
       match the proc and clientData for a  close handler for channel.

SEE ALSO
       close(n), Tcl_Close(3), Tcl_UnregisterChannel(3)

KEYWORDS
       callback, channel closing

Tcl				      7.5	     Tcl_CreateCloseHandler(3)
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