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.HS dp_atexit cmds


.SH NAME
.BS
dp_atexit \- arrange for commands to be evaluated when the process is exited.
.BE
.TP
\fBdp_atexit option ?\fIcmd\fR?

The dp_atexit command manages the \fIdp_atexit list\fP, a list of
callback routines that are evaluated just before the tcl+tk application
is exited.  This is useful for applications where clean up actions must be
performed before a process can safely exit.

The argument \fIoption\fP specifies the operation to be performed
on the dp_atexit list.  The valid options are:

.RS
.TP
\fBdp_atexit list

Returns the current dp_atexit list.

.TP
\fBdp_atexit set \fInewList\fP

Sets the dp_atexit list \fInewList\fP.

.TP
\fBdp_atexit append \fIcallback\fP

Append \fIcallback\fP to the end of the dp_atexit list.

.TP
\fBdp_atexit appendUnique \fIcallback\fP

Appends \fIcallback\fP to the end of the dp_atexit list if
it's not already a member of the list.

.TP
\fBdp_atexit prepend \fIcallback\fP

Inserts \fIcallback\fP at the front of the dp_atexit list.

.TP
\fBdp_atexit insert \fIbeforeCallback\fP \fIcallback\fP

Inserts \fIcallback\fP before \fIbeforeCallback\fP in the dp_atexit
list. If \fIbeforeCallback\fP is not in
the dp_atexit list, no action is taken.

.TP
\fBdp_atexit delete \fIcallback\fP

Delete \fIcallback\fP from the dp_atexit list.
If \fIcallback\fP is not in the dp_atexit list, no action is taken.

.TP
\fBdp_atexit clear

Clears the dp_atexit list.

.SH AUTHOR
Brian Smith (bsmith@cs.berkeley.edu)
.br
Steve Yen (syen@cs.berkeley.edu)
