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authorXin LI <delphij@FreeBSD.org>2014-03-01 00:09:36 +0000
committerXin LI <delphij@FreeBSD.org>2014-03-01 00:09:36 +0000
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Compensate previous import with the removed files.vendor/ncurses/5.9-20110404
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Notes: svn path=/vendor/ncurses/dist/; revision=262633 svn path=/vendor/ncurses/5.9-20110404/; revision=262635; tag=vendor/ncurses/5.9-20110404
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+<HTML>
+<HEAD>
+<TITLE>curs_initscr 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_initscr 3x</H1>
+<HR>
+<PRE>
+<!-- Manpage converted by man2html 3.0.1 -->
+<STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG> <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>
+
+
+
+
+</PRE>
+<H2>NAME</H2><PRE>
+ <STRONG>initscr</STRONG>, <STRONG>newterm</STRONG>, <STRONG>endwin</STRONG>, <STRONG>isendwin</STRONG>, <STRONG>set_term</STRONG>, <STRONG>delscreen</STRONG> -
+ <STRONG>curses</STRONG> screen initialization and manipulation routines
+
+
+</PRE>
+<H2>SYNOPSIS</H2><PRE>
+ <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
+
+ <STRONG>WINDOW</STRONG> <STRONG>*initscr(void);</STRONG>
+ <STRONG>int</STRONG> <STRONG>endwin(void);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>isendwin(void);</STRONG>
+ <STRONG>SCREEN</STRONG> <STRONG>*newterm(char</STRONG> <STRONG>*type,</STRONG> <STRONG>FILE</STRONG> <STRONG>*outfd,</STRONG> <STRONG>FILE</STRONG> <STRONG>*infd);</STRONG>
+ <STRONG>SCREEN</STRONG> <STRONG>*set_term(SCREEN</STRONG> <STRONG>*new);</STRONG>
+ <STRONG>void</STRONG> <STRONG>delscreen(SCREEN*</STRONG> <STRONG>sp);</STRONG>
+
+
+</PRE>
+<H2>DESCRIPTION</H2><PRE>
+ <STRONG>initscr</STRONG> is normally the first <STRONG>curses</STRONG> routine to call when
+ initializing a program. A few special routines sometimes
+ need to be called before it; these are <STRONG>slk_init</STRONG>, <STRONG>filter</STRONG>,
+ <STRONG>ripoffline</STRONG>, <STRONG>use_env</STRONG>. For multiple-terminal applications,
+ <STRONG>newterm</STRONG> may be called before <STRONG>initscr</STRONG>.
+
+ The initscr code determines the terminal type and initial-
+ izes all <STRONG>curses</STRONG> data structures. <STRONG>initscr</STRONG> also causes the
+ first call to <STRONG>refresh</STRONG> to clear the screen. If errors oc-
+ cur, <STRONG>initscr</STRONG> writes an appropriate error message to stan-
+ dard error and exits; otherwise, a pointer is returned to
+ <STRONG>stdscr</STRONG>.
+
+ A program that outputs to more than one terminal should
+ use the <STRONG>newterm</STRONG> routine for each terminal instead of
+ <STRONG>initscr</STRONG>. A program that needs to inspect capabilities, so
+ it can continue to run in a line-oriented mode if the ter-
+ minal cannot support a screen-oriented program, would also
+ use <STRONG>newterm</STRONG>. The routine <STRONG>newterm</STRONG> should be called once
+ for each terminal. It returns a variable of type <STRONG>SCREEN</STRONG> <STRONG>*</STRONG>
+ which should be saved as a reference to that terminal.
+ The arguments are the <EM>type</EM> of the terminal to be used in
+ place of <STRONG>$TERM</STRONG>, a file pointer for output to the terminal,
+ and another file pointer for input from the terminal (if
+ <EM>type</EM> is <STRONG>NULL</STRONG>, <STRONG>$TERM</STRONG> will be used). The program must also
+ call <STRONG>endwin</STRONG> for each terminal being used before exiting
+ from <STRONG>curses</STRONG>. If <STRONG>newterm</STRONG> is called more than once for the
+ same terminal, the first terminal referred to must be the
+ last one for which <STRONG>endwin</STRONG> is called.
+
+ A program should always call <STRONG>endwin</STRONG> before exiting or es-
+ caping from <STRONG>curses</STRONG> mode temporarily. This routine re-
+ stores tty modes, moves the cursor to the lower left-hand
+ corner of the screen and resets the terminal into the
+ proper non-visual mode. Calling <STRONG>refresh</STRONG> or <STRONG>doupdate</STRONG> after
+ a temporary escape causes the program to resume visual
+ mode.
+
+ The <STRONG>isendwin</STRONG> routine returns <STRONG>TRUE</STRONG> if <STRONG>endwin</STRONG> has been
+ called without any subsequent calls to <STRONG>wrefresh</STRONG>, and <STRONG>FALSE</STRONG>
+ otherwise.
+
+ The <STRONG>set_term</STRONG> routine is used to switch between different
+ terminals. The screen reference <STRONG>new</STRONG> becomes the new cur-
+ rent terminal. The previous terminal is returned by the
+ routine. This is the only routine which manipulates
+ <STRONG>SCREEN</STRONG> pointers; all other routines affect only the cur-
+ rent terminal.
+
+ The <STRONG>delscreen</STRONG> routine frees storage associated with the
+ <STRONG>SCREEN</STRONG> data structure. The <STRONG>endwin</STRONG> routine does not do
+ this, so <STRONG>delscreen</STRONG> should be called after <STRONG>endwin</STRONG> if a par-
+ ticular <STRONG>SCREEN</STRONG> is no longer needed.
+
+
+</PRE>
+<H2>RETURN VALUE</H2><PRE>
+ <STRONG>endwin</STRONG> returns the integer <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> upon
+ successful completion.
+
+ Routines that return pointers always return <STRONG>NULL</STRONG> on error.
+
+ X/Open defines no error conditions. In this implementa-
+ tion <STRONG>endwin</STRONG> returns an error if the terminal was not ini-
+ tialized.
+
+
+</PRE>
+<H2>NOTES</H2><PRE>
+ Note that <STRONG>initscr</STRONG> and <STRONG>newterm</STRONG> may be macros.
+
+
+</PRE>
+<H2>PORTABILITY</H2><PRE>
+ These functions are described in the XSI Curses standard,
+ Issue 4. It specifies that portable applications must not
+ call <STRONG>initscr</STRONG> more than once.
+
+ Old versions of curses, e.g., BSD 4.4, may have returned a
+ null pointer from <STRONG>initscr</STRONG> when an error is detected,
+ rather than exiting. It is safe but redundant to check
+ the return value of <STRONG>initscr</STRONG> in XSI Curses.
+
+
+</PRE>
+<H2>SEE ALSO</H2><PRE>
+ <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_kernel.3x.html">curs_kernel(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>,
+ <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>, <STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>.
+
+
+
+ <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>
+</PRE>
+<HR>
+<ADDRESS>
+Man(1) output converted with
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