'\" t
.\"     Title: ECONF_SETEXTVALUE
.\"    Author: libeconf developers
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 2025-01-01
.\"    Manual: libeconf Manual
.\"    Source: libeconf
.\"  Language: English
.\"
.TH "ECONF_SETEXTVALUE" "3" "2025\-01\-01" "libeconf" "libeconf Manual"
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.SH "NAME"
econf_setExtValue \- set extended value for a key in a configuration file structure

.SH "SYNOPSIS"
      
.sp
.ft B
.nf
#include <libeconf\&.h>
#include <libeconf_ext\&.h>
.fi
.ft
.sp

.BI "int econf_setExtValue(econf_file\ *" "key_file" ", const\ char\ *" "group" ", const\ char\ *" "key" ", const\ econf_ext_value\ *" "value" ");"

.SH "DESCRIPTION"

.PP
The \fBeconf_setExtValue\fR() function adds or modifies a key\*(Aqs value in the configuration file structure referenced by \fIkey_file\fR\&. This function allows setting the value using the full \fBeconf_ext_value\fR
structure, which includes additional metadata such as the file source, comments and line number.

.PP
The function cannot be used for setting the value. Values have to be set via econf_set<Type>Value.

.PP
The key will be set within the specified \fIgroup\fR\&. If \fIgroup\fR is NULL or an empty string, the key is set in the global section\&.

.PP
The parameters are defined as:

.PP
\fIkey_file\fR
.RS 4
            A pointer to the \fBeconf_file\fR structure where the key/value pair should be modified\&.

.RE
.PP
\fIgroup\fR
.RS 4
            The name of the configuration group (section) to which the key belongs\&.

.RE
.PP
\fIkey\fR
.RS 4
            The name of the key to set\&.

.RE
.PP
\fIvalue\fR
.RS 4
            A pointer to the \fBeconf_ext_value\fR structure containing additional information\&.

.RE

.SH "RETURN VALUE"

.PP
On success, \fBeconf_setExtValue\fR() returns \fBECONF_SUCCESS\fR\&.

.PP
On error, a non\-zero error number is returned\&. The function returns a value from the
\fBeconf_err\fR enumeration\&.

.SH "ERRORS"

.PP
\fBECONF_NOMEM\fR
.RS 4
          Memory allocation failed\&.

.RE

.SH "SEE ALSO"

.PP
\fBlibeconf\fR(3),
\fBeconf_readConfig\fR(3),
\fBeconf_errString\fR(3).

.RE