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
The channel for which to create or delete a close callback. The proce-
dure to call as the callback. 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)
CrtCloseHdlr 8.5.4 - Generated Sun Aug 17 20:43:35 CDT 2008