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Dickey 1996,1997,2002 * @Id: resizeterm.3x,v 1.10 2003/10/25 20:41:08 tom Exp @--><HTML><HEAD><TITLE>resizeterm 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>resizeterm 3x</H1><HR><PRE><!-- Manpage converted by man2html 3.0.1 --><STRONG><A HREF="resizeterm.3x.html">resizeterm(3x)</A></STRONG> <STRONG><A HREF="resizeterm.3x.html">resizeterm(3x)</A></STRONG></PRE><H2>NAME</H2><PRE> <STRONG>is_term_resized</STRONG>, <STRONG>resize_term</STRONG>, <STRONG>resizeterm</STRONG> - change the curses terminal size</PRE><H2>SYNOPSIS</H2><PRE> <STRONG>#include</STRONG> <STRONG><curses.h></STRONG> <STRONG>bool</STRONG> <STRONG>is_term_resized(int</STRONG> <STRONG>lines,</STRONG> <STRONG>int</STRONG> <STRONG>columns);</STRONG> <STRONG>int</STRONG> <STRONG>resize_term(int</STRONG> <STRONG>lines,</STRONG> <STRONG>int</STRONG> <STRONG>columns);</STRONG> <STRONG>int</STRONG> <STRONG>resizeterm(int</STRONG> <STRONG>lines,</STRONG> <STRONG>int</STRONG> <STRONG>columns);</STRONG></PRE><H2>DESCRIPTION</H2><PRE> This is an extension to the curses library. It provides callers with a hook into the <STRONG>ncurses</STRONG> data to resize win- dows, primarily for use by programs running in an X Window terminal (e.g., xterm). The function <STRONG>resizeterm</STRONG> resizes the standard and current windows to the specified dimen- sions, and adjusts other bookkeeping data used by the <STRONG>ncurses</STRONG> library that record the window dimensions. Most of the work is done by the inner function <STRONG>resize_term</STRONG>. The outer function <STRONG>resizeterm</STRONG> adds bookkeep- ing for the SIGWINCH handler. When resizing the windows, <STRONG>resize_term</STRONG> blank-fills the areas that are extended. The calling application should fill in these areas with appro- priate data. The <STRONG>resize_term</STRONG> function attempts to resize all windows. However, due to the calling convention of pads, it is not possible to resize these without addi- tional interaction with the application. A support function <STRONG>is_term_resized</STRONG> is provided so that applications can check if the <STRONG>resize_term</STRONG> function would modify the window structures. It returns TRUE if the win- dows would be modified, and FALSE otherwise.</PRE><H2>RETURN VALUE</H2><PRE> Except as notes, these function return the integer <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> on success. They will fail if either of the dimensions are less than or equal to zero, or if an error occurs while (re)allocating memory for the windows.</PRE><H2>NOTES</H2><PRE> While these functions are intended to be used to support a signal handler (i.e., for SIGWINCH), care should be taken to avoid invoking them in a context where <STRONG>malloc</STRONG> or <STRONG>real-</STRONG> <STRONG>loc</STRONG> may have been interrupted, since it uses those func- tions. If ncurses is configured to supply its own SIGWINCH han- dler, the <STRONG>resizeterm</STRONG> function ungetch's a <STRONG>KEY_RESIZE</STRONG> which will be read on the next call to <STRONG>getch</STRONG>. This is used to alert an application that the screen size has changed, and that it should repaint special features such as pads that cannot be done automatically.</PRE><H2>SEE ALSO</H2><PRE> <STRONG><A HREF="wresize.3x.html">wresize(3x)</A></STRONG>.</PRE><H2>AUTHOR</H2><PRE> Thomas Dickey (from an equivalent function written in 1988 for BSD curses). <STRONG><A HREF="resizeterm.3x.html">resizeterm(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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