'\" te
.\" Copyright (c) 2000, Sun Microsystems, Inc. All Rights Reserved.
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.TH ptree_unregister_handler 3PICLTREE "1 Aug 2000" "SunOS 5.11" "PICL Plug-In Library Functions"
.SH NAME
ptree_unregister_handler \- unregister the event handler for the event
.SH SYNOPSIS
.LP
.nf
\fBcc\fR [\fIflag \&.\|.\|.\fR] \fIfile \fR\&.\|.\|. \fB-lpicltree\fR [\fIlibrary \&.\|.\|.\fR] 
#include <picltree.h>

\fBvoid\fR \fBptree_register_handler\fR(\fBconst char *\fR\fIename\fR,
     \fBvoid (*\fR\fIevt_handler\fR)(\fBconst char *\fR\fIename\fR, const void *\fIearg\fR,
     \fBsize_t\fR \fIsize\fR, \fBvoid *\fR\fIcookie\fR), \fBvoid *\fR\fIcookie\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBptree_unregister_handler()\fR function unregisters the event handler for
the specified event. The argument \fIename\fR specifies the name of the PICL
event for which to unregister the handler. The argument \fIevt_handler\fR
specifies the event handler function. The argument \fIcookie\fR is the pointer
to the caller-specific data given at the time of registration of the handler.
.sp
.LP
If the handler being unregistered is currently executing, then this function
will block until its completion. Because of this, locks acquired by the
handlers should not be held across the call to \fBptree_unregister_handler()\fR
or a deadlock may result.
.sp
.LP
The \fBptree_unregister_handler()\fR function must not be invoked from the
handler that is being unregistered.
.SH RETURN VALUES
.sp
.LP
This function does not return a value.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
MT-LevelMT-Safe
.TE

.SH SEE ALSO
.sp
.LP
\fBptree_register_handler\fR(3PICLTREE), \fBattributes\fR(5)