Tcl_CreateCloseHandler, Tcl_DeleteCloseHandler — arrange for callbacks when channels are closed
#include <tcl.h>
Tcl_CreateCloseHandler(channel, proc, clientData)
Tcl_DeleteCloseHandler(channel, proc, clientData)
- 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 callback.
- void *clientData (in)
-
Arbitrary one-word value to pass to proc.
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(
void *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_DeleteCloseHandler does nothing if its proc and
clientData arguments do not match the proc and clientData
for a close handler for channel.
close, Tcl_Close, Tcl_UnregisterChannel
callback, channel closing
Copyright © 1994-1996 Sun Microsystems, Inc.