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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><!-- * t **************************************************************************** * Copyright (c) 1998-2002,2003 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * * copy of this software and associated documentation files (the * * "Software"), to deal in the Software without restriction, including * * without limitation the rights to use, copy, modify, merge, publish, * * distribute, distribute with modifications, sublicense, and/or sell * * copies of the Software, and to permit persons to whom the Software is * * furnished to do so, subject to the following conditions: * * * * The above copyright notice and this permission notice shall be included * * in all copies or substantial portions of the Software. * * * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * * * Except as contained in this notice, the name(s) of the above copyright * * holders shall not be used in advertising or otherwise to promote the * * sale, use or other dealings in this Software without prior written * * authorization. * **************************************************************************** * @Id: form_field_new.3x,v 1.12 2003/05/10 20:33:49 jmc Exp @--><HTML><HEAD><TITLE>form_field_new 3x</TITLE><link rev=made href="mailto:bug-ncurses@gnu.org"><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"></HEAD><BODY><H1>form_field_new 3x</H1><HR><PRE><!-- Manpage converted by man2html 3.0.1 --><STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG> <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG></PRE><H2>NAME</H2><PRE> <STRONG>form_field_new</STRONG> - create and destroy form fields</PRE><H2>SYNOPSIS</H2><PRE> <STRONG>#include</STRONG> <STRONG><form.h></STRONG> FIELD *new_field(int height, int width, int toprow, int leftcol, int offscreen, int nbuffers); FIELD *dup_field(FIELD *field, int toprow, int leftcol); FIELD *link_field(FIELD *field, int toprow, int leftcol); int free_field(FIELD *field);</PRE><H2>DESCRIPTION</H2><PRE> The function <STRONG>new_field</STRONG> allocates a new field and initial- izes it from the parameters given: height, width, row of upper-left corner, column of upper-left corner, number off-screen rows, and number of additional working buffers. The function <STRONG>dup_field</STRONG> duplicates a field at a new loca- tion. Most attributes (including current contents, size, validation type, buffer count, growth threshold, justifi- cation, foreground, background, pad character, options, and user pointer) are copied. Field status and the field page bit are not copied. The function <STRONG>link_field</STRONG> acts like <STRONG>dup_field</STRONG>, but the new field shares buffers with its parent. Attribute data is separate. The function <STRONG>free_field</STRONG> de-allocates storage associated with a field.</PRE><H2>RETURN VALUE</H2><PRE> The function, <STRONG>new_field</STRONG>, <STRONG>dup_field</STRONG>, <STRONG>link_field</STRONG> return <STRONG>NULL</STRONG> on error. The function <STRONG>free_field</STRONG> returns one of the following: <STRONG>E_OK</STRONG> The routine succeeded. <STRONG>E_SYSTEM_ERROR</STRONG> System error occurred (see <STRONG>errno</STRONG>). <STRONG>E_BAD_ARGUMENT</STRONG> Routine detected an incorrect or out-of-range argu- ment.</PRE><H2>SEE ALSO</H2><PRE> <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>.</PRE><H2>NOTES</H2><PRE> The header file <STRONG><form.h></STRONG> automatically includes the header file <STRONG><curses.h></STRONG>.</PRE><H2>PORTABILITY</H2><PRE> These routines emulate the System V forms library. They were not supported on Version 7 or BSD versions. It may be unwise to count on the set of attributes copied by <STRONG><A HREF="dup_field.3x.html">dup_field(3x)</A></STRONG> being portable; the System V forms library documents are not very explicit about what gets copied and what doesn't.</PRE><H2>AUTHORS</H2><PRE> Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S. Raymond. <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG></PRE><HR><ADDRESS>Man(1) output converted with<a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a></ADDRESS></BODY></HTML>⌨️ 快捷键说明
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