94 lines
4.0 KiB
Plaintext
94 lines
4.0 KiB
Plaintext
'\" t
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.\"***************************************************************************
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.\" Copyright (c) 1998-2018,2019 Free Software Foundation, Inc. *
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.\" *
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.\" Permission is hereby granted, free of charge, to any person obtaining a *
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.\" copy of this software and associated documentation files (the *
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.\" "Software"), to deal in the Software without restriction, including *
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.\" without limitation the rights to use, copy, modify, merge, publish, *
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.\" distribute, distribute with modifications, sublicense, and/or sell *
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.\" copies of the Software, and to permit persons to whom the Software is *
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.\" furnished to do so, subject to the following conditions: *
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.\" *
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.\" The above copyright notice and this permission notice shall be included *
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.\" in all copies or substantial portions of the Software. *
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.\" *
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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.\" IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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.\" DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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.\" OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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.\" THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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.\" *
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.\" Except as contained in this notice, the name(s) of the above copyright *
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.\" holders shall not be used in advertising or otherwise to promote the *
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.\" sale, use or other dealings in this Software without prior written *
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.\" authorization. *
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.\"***************************************************************************
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.\"
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.\" $Id: form_field.3x,v 1.13 2019/01/20 20:31:42 tom Exp $
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.TH form_field 3X ""
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.SH NAME
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\fBform_field\fR \- make and break connections between fields and forms
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.SH SYNOPSIS
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\fB#include <form.h>\fR
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.br
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int set_form_fields(FORM *form, FIELD **fields);
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.br
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FIELD **form_fields(const FORM *form);
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.br
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int field_count(const FORM *form);
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.br
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int move_field(FIELD *field, int frow, int fcol);
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.br
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.SH DESCRIPTION
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The function \fBset_form_fields\fR changes the field pointer array of
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the given \fIform\fR. The array must be terminated by a \fBNULL\fR.
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.PP
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The function \fBform_fields\fR returns the field array of the given form.
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.PP
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The function \fBfield_count\fR returns the count of fields in \fIform\fR.
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.PP
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The function \fBmove_field\fR moves the given field (which must be disconnected)
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to a specified location on the screen.
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.SH RETURN VALUE
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The function \fBform_fields\fR returns a pointer (which may be \fBNULL\fR).
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It does not set errno.
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.PP
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The function \fBfield_count\fR returns \fBERR\fR if the \fIform\fP parameter
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is \fBNULL\fP.
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.PP
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The functions \fBset_form_fields\fR and \fBmove_field\fR return one of
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the following codes on error:
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.TP 5
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.B E_OK
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The routine succeeded.
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.TP 5
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.B E_BAD_ARGUMENT
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Routine detected an incorrect or out-of-range argument.
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.TP 5
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.B E_CONNECTED
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The field is already connected to a form.
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.TP 5
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.B E_POSTED
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The form is already posted.
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.TP 5
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.B E_SYSTEM_ERROR
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System error occurred (see \fBerrno\fR(3)).
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.SH SEE ALSO
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\fBcurses\fR(3X), \fBform\fR(3X).
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.SH NOTES
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The header file \fB<form.h>\fR automatically includes the header file
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\fB<curses.h>\fR.
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.SH PORTABILITY
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These routines emulate the System V forms library.
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They were not supported on
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Version 7 or BSD versions.
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.PP
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The SVr4 forms library documentation specifies the \fBfield_count\fR error value
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as \-1 (which is the value of \fBERR\fR).
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.SH AUTHORS
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Juergen Pfeifer.
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Manual pages and adaptation for new curses by Eric S. Raymond.
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