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175 lines
6.1 KiB
HTML
175 lines
6.1 KiB
HTML
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****************************************************************************
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* Copyright (c) 1998,2002 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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* *
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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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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************
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* Author: Thomas E. Dickey <dickey@clark.net> 1996,1997,2002
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* @Id: resizeterm.3x,v 1.9 2002/02/16 22:32:24 tom Exp @
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-->
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<HTML>
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<HEAD>
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<TITLE>resizeterm 3x</TITLE>
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<link rev=made href="mailto:bug-ncurses@gnu.org">
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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</HEAD>
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<BODY>
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<H1>resizeterm 3x</H1>
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<HR>
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<PRE>
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<!-- Manpage converted by man2html 3.0.1 -->
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</PRE>
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<H2>NAME</H2><PRE>
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<STRONG>is_term_resized</STRONG>, <STRONG>resize_term</STRONG>, <STRONG>resizeterm</STRONG> - change the
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curses terminal size
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</PRE>
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<H2>SYNOPSIS</H2><PRE>
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<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
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<STRONG>bool</STRONG> <STRONG>is_term_resized(int</STRONG> <STRONG>lines,</STRONG> <STRONG>int</STRONG> <STRONG>columns);</STRONG>
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<STRONG>int</STRONG> <STRONG>resize_term(int</STRONG> <STRONG>lines,</STRONG> <STRONG>int</STRONG> <STRONG>columns);</STRONG>
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<STRONG>int</STRONG> <STRONG>resizeterm(int</STRONG> <STRONG>lines,</STRONG> <STRONG>int</STRONG> <STRONG>columns);</STRONG>
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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This is an extension to the curses library. It provides
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callers with a hook into the <STRONG>ncurses</STRONG> data to resize win-
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dows, primarily for use by programs running in an X Window
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terminal (e.g., xterm). The function <STRONG>resizeterm</STRONG> resizes
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the standard and current windows to the specified dimen-
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sions, and adjusts other bookkeeping data used by the
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<STRONG>ncurses</STRONG> library that record the window dimensions.
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Most of the work is done by the inner function
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<STRONG>resize_term</STRONG>. The outer function <STRONG>resizeterm</STRONG> adds bookkeep-
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ing for the SIGWINCH handler. When resizing the windows,
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<STRONG>resize_term</STRONG> blank-fills the areas that are extended. The
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calling application should fill in these areas with appro-
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priate data. The <STRONG>resize_term</STRONG> function attempts to resize
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all windows. However, due to the calling convention of
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pads, it is not possible to resize these without addi-
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tional interaction with the application.
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A support function <STRONG>is_term_resized</STRONG> is provided so that
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applications can check if the <STRONG>resize_term</STRONG> function would
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modify the window structures. It returns TRUE if the win-
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dows would be modified, and FALSE otherwise.
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</PRE>
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<H2>RETURN VALUE</H2><PRE>
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Except as notes, these function return the integer <STRONG>ERR</STRONG>
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upon failure and <STRONG>OK</STRONG> on success. They will fail if either
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of the dimensions are less than or equal to zero, or if an
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error occurs while (re)allocating memory for the windows.
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</PRE>
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<H2>NOTES</H2><PRE>
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While these functions are intended to be used to support a
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signal handler (i.e., for SIGWINCH), care should be taken
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to avoid invoking them in a context where <STRONG>malloc</STRONG> or <STRONG>real-</STRONG>
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<STRONG>loc</STRONG> may have been interrupted, since it uses those func-
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tions.
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If ncurses is configured to supply its own SIGWINCH han-
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dler, the <STRONG>resizeterm</STRONG> function ungetch's a <STRONG>KEY_RESIZE</STRONG> which
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will be read on the next call to <STRONG>getch</STRONG>. This is used to
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alert an application that the screen size has changed, and
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that it should repaint special features such as pads that
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cannot be done automatically.
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</PRE>
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<H2>SEE ALSO</H2><PRE>
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<STRONG><A HREF="wresize.3x.html">wresize(3x)</A></STRONG>.
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</PRE>
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<H2>AUTHOR</H2><PRE>
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Thomas Dickey (from an equivalent function written in 1988
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for BSD curses).
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</PRE>
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<HR>
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<ADDRESS>
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Man(1) output converted with
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<a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a>
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</ADDRESS>
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</BODY>
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</HTML>
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