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.\"***************************************************************************
-.\" Copyright 2018-2021,2022 Thomas E. Dickey *
+.\" Copyright 2018-2022,2023 Thomas E. Dickey *
.\" Copyright 1998-2006,2010 Free Software Foundation, Inc. *
.\" *
.\" Permission is hereby granted, free of charge, to any person obtaining a *
.\" authorization. *
.\"***************************************************************************
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-.\" $Id: form_fieldtype.3x,v 1.32 2022/02/12 20:03:40 tom Exp $
+.\" $Id: form_fieldtype.3x,v 1.35 2023/07/01 15:46:10 tom Exp $
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-.TH form_fieldtype 3X 2022-02-12 "ncurses 6.4" "Library calls"
+.TH form_fieldtype 3X 2023-07-01 "ncurses 6.4" "Library calls"
.SH NAME
\fBform_fieldtype\fP \- define validation-field types
.SH SYNOPSIS
The form library passes it the character to be checked
and a pointer to an argument-block structure.
.SS free_fieldtype
-.PP
The \fBfree_fieldtype\fP function
frees the space allocated for a given validation type by \fBnew_fieldtype\fP.
.SS set_fieldtype_arg
-.PP
The function \fBset_fieldtype_arg\fP associates
three storage-management functions with a field type:
.TP 5
that \fImake_arg\fP does not allocate memory but simply loads the
argument into a single scalar value.
.SS set_fieldtype_choice
-.PP
The form driver requests \fBREQ_NEXT_CHOICE\fP and \fBREQ_PREV_CHOICE\fP assume
that the possible values of a field form an ordered set, and provide the forms
user with a way to move through the set.
These functions take the field pointer and an
argument-block structure as arguments.
.SS link_fieldtype
-.PP
The function \fBlink_fieldtype\fP creates
a new field type from the two given types.
They are connected by an logical 'OR'.