Tcl_CreateCloseHandlerTcl Library ProcedTcl_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 create
or delete a close
callback.
Tcl_CloseProc *proc (in) The procedure to
call as the call-
back.
ClientData clientData (in) Arbitrary one-
word value to
pass to proc.
_________________________________________________________________DESCRIPTIONTcl_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 chan-
nel. The proc and clientData identify which close call-
back to remove; Tcl_DeleteCloseHandler does nothing if its
proc and clientData arguments do not match the proc and
clientData for a close handler for channel.
SEE ALSOclose(n), Tcl_Close(3), Tcl_UnregisterChannel(3)Tcl 7.5 1
Tcl_CreateCloseHandlerTcl Library ProcedTcl_CreateCloseHandler(3)KEYWORDS
callback, channel closing
Tcl 7.5 2
