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.\" "@(#)error_handling.3 3.4 90/08/23 Copyr 1990 Sun Micro"
.TH "SET ERROR HANDLING" 3P "29 February 1991"
.SH NAME
SET ERROR HANDLING \- Set the error handling function -- C binding only
.IX "Errors" "SET ERROR HANDLING"
.SH SYNOPSIS
.SS C Syntax
.ft B
.ta 1.25i 3i
.nf
void
pset_err_hand ( new_err_hand, old_err_hand )
void	(*new_err_hand) ();	\fIapplication's error handling function\fP
void	(**old_err_hand) ();	\fIOUT old error handling function\fP
.fi
.ft R
.SS Required PHIGS Operating States
(*, *, *, *)
.SH DESCRIPTION
\s-2SET ERROR HANDLER\s+2 sets the error handling function that will be called when
\s-2PHIGS\s+2 reports an error.
The default function is perr_hand.
See the \s-2ERROR HANDLING\s+2 man page for a description of the parameters passed to
the error handling function.
.SS Purpose
Use \s-2SET ERROR HANDLER\s+2 is used to set the error handling function to an
application's own error handling function.
.LP
When the error handling mode is \s-2ON\s+2, \s-2ERROR HANDLING\s+2 is
called by \s-2PHIGS\s+2 functions when they detect an error.
.LP
An application may replace the default \s-2ERROR HANDLING\s+2 function,
using this function, in order to modify the default response to errors, which is
simply to call \s-2ERROR LOGGING\s+2.
Any such replacement must have the name above and accept the same parameters.
.SS C Input Parameters
.IP \fInew_err_hand\fP
A function that is to be the new error handling function.
.IP \fIold_err_hand\fP
A pointer to a function pointer where the current error handling function
will be returned.
.SS Execution
\s-2SET ERROR HANDLER\s+2 sets the error handling function that will be called when
\s-2PHIGS\s+2 reports an error.
The error handling function is called by \s-2PHIGS\s+2 when an error is detected in
a non-inquiry function and the error handling mode is \s-2ON\s+2.
.LP
See \s-2OPEN PHIGS\s+2 for a description of the \s-2PHIGS\s+2
interaction with the error file.
.SH ERRORS
.IP 
No Errors
.SH SEE ALSO
.IP
.nf
.SM "ERROR HANDLING (3P)"
.SM "ERROR LOGGING (3P)"
.SM "SET ERROR HANDLING MODE (3P)"
.fi