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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><!-- **************************************************************************** * Copyright (c) 1998-2003,2005 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: curs_window.3x,v 1.13 2005/05/15 16:32:02 tom Exp @--><HTML><HEAD><TITLE>curs_window 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>curs_window 3x</H1><HR><PRE><!-- Manpage converted by man2html 3.0.1 --><STRONG><A HREF="curs_window.3x.html">curs_window(3x)</A></STRONG> <STRONG><A HREF="curs_window.3x.html">curs_window(3x)</A></STRONG></PRE><H2>NAME</H2><PRE> <STRONG>newwin</STRONG>, <STRONG>delwin</STRONG>, <STRONG>mvwin</STRONG>, <STRONG>subwin</STRONG>, <STRONG>derwin</STRONG>, <STRONG>mvderwin</STRONG>, <STRONG>dupwin</STRONG>, <STRONG>wsyncup</STRONG>, <STRONG>syncok</STRONG>, <STRONG>wcursyncup</STRONG>, <STRONG>wsyncdown</STRONG> - create <STRONG>curses</STRONG> windows</PRE><H2>SYNOPSIS</H2><PRE> <STRONG>#include</STRONG> <STRONG><curses.h></STRONG> <STRONG>WINDOW</STRONG> <STRONG>*newwin(int</STRONG> <STRONG>nlines,</STRONG> <STRONG>int</STRONG> <STRONG>ncols,</STRONG> <STRONG>int</STRONG> <STRONG>begin_y,</STRONG> <STRONG>int</STRONG> <STRONG>begin_x);</STRONG> <STRONG>int</STRONG> <STRONG>delwin(WINDOW</STRONG> <STRONG>*win);</STRONG> <STRONG>int</STRONG> <STRONG>mvwin(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x);</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*subwin(WINDOW</STRONG> <STRONG>*orig,</STRONG> <STRONG>int</STRONG> <STRONG>nlines,</STRONG> <STRONG>int</STRONG> <STRONG>ncols,</STRONG> <STRONG>int</STRONG> <STRONG>begin_y,</STRONG> <STRONG>int</STRONG> <STRONG>begin_x);</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*derwin(WINDOW</STRONG> <STRONG>*orig,</STRONG> <STRONG>int</STRONG> <STRONG>nlines,</STRONG> <STRONG>int</STRONG> <STRONG>ncols,</STRONG> <STRONG>int</STRONG> <STRONG>begin_y,</STRONG> <STRONG>int</STRONG> <STRONG>begin_x);</STRONG> <STRONG>int</STRONG> <STRONG>mvderwin(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>par_y,</STRONG> <STRONG>int</STRONG> <STRONG>par_x);</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*dupwin(WINDOW</STRONG> <STRONG>*win);</STRONG> <STRONG>void</STRONG> <STRONG>wsyncup(WINDOW</STRONG> <STRONG>*win);</STRONG> <STRONG>int</STRONG> <STRONG>syncok(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG> <STRONG>void</STRONG> <STRONG>wcursyncup(WINDOW</STRONG> <STRONG>*win);</STRONG> <STRONG>void</STRONG> <STRONG>wsyncdown(WINDOW</STRONG> <STRONG>*win);</STRONG></PRE><H2>DESCRIPTION</H2><PRE> Calling <STRONG>newwin</STRONG> creates and returns a pointer to a new win- dow with the given number of lines and columns. The upper left-hand corner of the window is at line <EM>begin</EM>_<EM>y</EM>, column <EM>begin</EM>_<EM>x</EM>. If either <EM>nlines</EM> or <EM>ncols</EM> is zero, they default to <STRONG>LINES</STRONG> <STRONG>-</STRONG> <EM>begin</EM>_<EM>y</EM> and <STRONG>COLS</STRONG> <STRONG>-</STRONG> <EM>begin</EM>_<EM>x</EM>. A new full-screen window is created by calling <STRONG>newwin(0,0,0,0)</STRONG>. Calling <STRONG>delwin</STRONG> deletes the named window, freeing all memo- ry associated with it (it does not actually erase the win- dow's screen image). Subwindows must be deleted before the main window can be deleted. Calling <STRONG>mvwin</STRONG> moves the window so that the upper left-hand corner is at position (<EM>x</EM>, <EM>y</EM>). If the move would cause the window to be off the screen, it is an error and the window is not moved. Moving subwindows is allowed, but should be avoided. Calling <STRONG>subwin</STRONG> creates and returns a pointer to a new win- dow with the given number of lines, <EM>nlines</EM>, and columns, <EM>ncols</EM>. The window is at position (<EM>begin</EM>_<EM>y</EM>, <EM>begin</EM>_<EM>x</EM>) on the screen. (This position is relative to the screen, and not to the window <EM>orig</EM>.) The window is made in the middle of the window <EM>orig</EM>, so that changes made to one window will affect both windows. The subwindow shares memory with the window <EM>orig</EM>. When using this routine, it is nec- essary to call <STRONG>touchwin</STRONG> or <STRONG>touchline</STRONG> on <EM>orig</EM> before call- ing <STRONG>wrefresh</STRONG> on the subwindow. Calling <STRONG>derwin</STRONG> is the same as calling <STRONG>subwin,</STRONG> except that <EM>begin</EM>_<EM>y</EM> and <EM>begin</EM>_<EM>x</EM> are relative to the origin of the win- dow <EM>orig</EM> rather than the screen. There is no difference between the subwindows and the derived windows. Calling <STRONG>mvderwin</STRONG> moves a derived window (or subwindow) in- side its parent window. The screen-relative parameters of the window are not changed. This routine is used to dis- play different parts of the parent window at the same physical position on the screen. Calling <STRONG>dupwin</STRONG> creates an exact duplicate of the window <EM>win</EM>. Calling <STRONG>wsyncup</STRONG> touches all locations in ancestors of <EM>win</EM> that are changed in <EM>win</EM>. If <STRONG>syncok</STRONG> is called with second argument <STRONG>TRUE</STRONG> then <STRONG>wsyncup</STRONG> is called automatically whenev- er there is a change in the window. The <STRONG>wsyncdown</STRONG> routine touches each location in <EM>win</EM> that has been touched in any of its ancestor windows. This routine is called by <STRONG>wrefresh</STRONG>, so it should almost never be necessary to call it manually. The routine <STRONG>wcursyncup</STRONG> updates the current cursor position of all the ancestors of the window to reflect the current cursor position of the window.</PRE><H2>RETURN VALUE</H2><PRE> Routines that return an integer return the integer <STRONG>ERR</STRONG> up- on failure and <STRONG>OK</STRONG> (SVr4 only specifies "an integer value other than <STRONG>ERR</STRONG>") upon successful completion. Routines that return pointers return <STRONG>NULL</STRONG> on error. X/Open defines no error conditions. In this implementa- tion <STRONG>delwin</STRONG> returns an error if the window pointer is null, or if the window is the parent of anoth- er window. This implementation also maintains a list of windows, and checks that the pointer passed to <STRONG>delwin</STRONG> is one that it created, returning an error if it was not.. <STRONG>mvderwin</STRONG> returns an error if the window pointer is null, or if some part of the window would be placed off-screen. <STRONG>mvwin</STRONG> returns an error if the window pointer is null, or if the window is really a pad, or if some part of the window would be placed off- screen. <STRONG>syncok</STRONG> returns an error if the window pointer is null.</PRE><H2>NOTES</H2><PRE> If many small changes are made to the window, the <STRONG>wsyncup</STRONG> option could degrade performance. Note that <STRONG>syncok</STRONG> may be a macro.</PRE><H2>BUGS</H2><PRE> The subwindow functions (<EM>subwin</EM>, <EM>derwin</EM>, <EM>mvderwin</EM>, <STRONG>wsyn-</STRONG> <STRONG>cup</STRONG>, <STRONG>wsyncdown</STRONG>, <STRONG>wcursyncup</STRONG>, <STRONG>syncok</STRONG>) are flaky, incomplete- ly implemented, and not well tested. The System V curses documentation is very unclear about what <STRONG>wsyncup</STRONG> and <STRONG>wsyncdown</STRONG> actually do. It seems to imply that they are only supposed to touch exactly those lines that are affected by ancestor changes. The language here, and the behavior of the <STRONG>curses</STRONG> implementation, is pat- terned on the XPG4 curses standard. The weaker XPG4 spec may result in slower updates.</PRE><H2>PORTABILITY</H2><PRE> The XSI Curses standard, Issue 4 describes these func- tions.</PRE><H2>SEE ALSO</H2><PRE> <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>, <STRONG><A HREF="curs_touch.3x.html">curs_touch(3x)</A></STRONG> <STRONG><A HREF="curs_window.3x.html">curs_window(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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