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Man Pages


Manual Reference Pages  -  TCL_CALLWHENDELETED (3)

NAME

Tcl_CallWhenDeleted, Tcl_DontCallWhenDeleted - Arrange for callback when interpreter is deleted

CONTENTS

Synopsis
Arguments
Description
Keywords

SYNOPSIS

#include <tcl.h>

Tcl_CallWhenDeleted(interp, proc, clientData)

Tcl_DontCallWhenDeleted(interp, proc, clientData)

ARGUMENTS


.TP 15 Tcl_Interp *interp (in)
Tcl_Interp*interp Tcl_Interp Interpreter with which to associated callback.
.TP 15 Tcl_InterpDeleteProc *proc (in)
Tcl_InterpDeleteProc*proc Tcl_InterpDeleteProc Procedure to call when interp is deleted.
.TP 15 ClientData clientData (in)
ClientDataclientData ClientData Arbitrary one-word value to pass to proc.

   








\L’|0u-1v’\l’75u+3n_’\L’0u+1v-0u’\l’|0u-1.5n_’



\L’|0u-1v’\L’0u+1v-0u’\l’|0u-1.5n_’





DESCRIPTION

Tcl_CallWhenDeleted arranges for proc to be called by Tcl_DeleteInterp if/when interp is deleted at some future time. Proc will be invoked just before the interpreter is deleted, but the interpreter will still be valid at the time of the call. Proc should have arguments and result that match the type Tcl_InterpDeleteProc:


typedef void Tcl_InterpDeleteProc(
        ClientData clientData,
        Tcl_Interp *interp);


The clientData and interp parameters are copies of the clientData and interp arguments given to Tcl_CallWhenDeleted. Typically, clientData points to an application-specific data structure that proc uses to perform cleanup when an interpreter is about to go away. Proc does not return a value.

Tcl_DontCallWhenDeleted cancels a previous call to Tcl_CallWhenDeleted with the same arguments, so that proc will not be called after all when interp is deleted. If there is no deletion callback that matches interp, proc, and clientData then the call to Tcl_DontCallWhenDeleted has no effect.

KEYWORDS

callback, delete, interpreter
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Tcl TCL_CALLWHENDELETED (3) 7.0

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