Initial commit of OpenSPARC T2 architecture model.
[OpenSPARC-T2-SAM] / sam-t2 / devtools / v8plus / man / man3 / Tcl_DeleteCloseHandler.3
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244.TH Tcl_CreateCloseHandler 3 7.5 Tcl "Tcl Library Procedures"
245.BS
246'\" Note: do not modify the .SH NAME line immediately below!
247.SH NAME
248Tcl_CreateCloseHandler, Tcl_DeleteCloseHandler \- arrange for callbacks when channels are closed
249.SH SYNOPSIS
250.nf
251\fB#include <tcl.h>\fR
252.sp
253void
254\fBTcl_CreateCloseHandler\fR(\fIchannel, proc, clientData\fR)
255.sp
256void
257\fBTcl_DeleteCloseHandler\fR(\fIchannel, proc, clientData\fR)
258.sp
259.SH ARGUMENTS
260.AS Tcl_CloseProc callbackData in
261.AP Tcl_Channel channel in
262The channel for which to create or delete a close callback.
263.AP Tcl_CloseProc *proc in
264The procedure to call as the callback.
265.AP ClientData clientData in
266Arbitrary one-word value to pass to \fIproc\fR.
267.BE
268
269.SH DESCRIPTION
270.PP
271\fBTcl_CreateCloseHandler\fR arranges for \fIproc\fR to be called when
272\fIchannel\fR is closed with \fBTcl_Close\fR or
273\fBTcl_UnregisterChannel\fR, or using the Tcl \fBclose\fR command.
274\fIProc\fR should match the following prototype:
275.PP
276.CS
277typedef void Tcl_CloseProc(
278 ClientData \fIclientData\fR);
279.CE
280.PP
281The \fIclientData\fR is the same as the value provided in the call to
282\fBTcl_CreateCloseHandler\fR.
283.PP
284\fBTcl_DeleteCloseHandler\fR removes a close callback for \fIchannel\fR.
285The \fIproc\fR and \fIclientData\fR identify which close callback to
286remove; \fBTcl_DeleteCloseHandler\fR does nothing if its \fIproc\fR and
287\fIclientData\fR arguments do not match the \fIproc\fR and \fIclientData\fR
288for a close handler for \fIchannel\fR.
289
290.SH "SEE ALSO"
291close(n), Tcl_Close(3), Tcl_UnregisterChannel(3)
292
293.SH KEYWORDS
294callback, channel closing