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649 lines
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HTML
649 lines
28 KiB
HTML
<!--
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****************************************************************************
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* Copyright (c) 2008-2012,2014 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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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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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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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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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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* @Id: curs_threads.3x,v 1.20 2014/03/15 19:25:28 tom Exp @
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* ***************************************************************************
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* ***************************************************************************
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-->
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
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<HTML>
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<HEAD>
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<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
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<meta name="generator" content="Manpage converted by man2html - see http://invisible-island.net/scripts/readme.html#others_scripts">
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<TITLE>curs_threads 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>curs_threads 3x</H1>
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<HR>
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<PRE>
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<STRONG><A HREF="curs_threads.3x.html">curs_threads(3x)</A></STRONG> <STRONG><A HREF="curs_threads.3x.html">curs_threads(3x)</A></STRONG>
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</PRE>
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<H2><a name="h2-NAME">NAME</a></H2><PRE>
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<STRONG>use_screen</STRONG>, <STRONG>use_window</STRONG> - <STRONG>curses</STRONG> thread support
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</PRE>
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<H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
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<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
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<STRONG>typedef</STRONG> <STRONG>int</STRONG> <STRONG>(*NCURSES_WINDOW_CB)(WINDOW</STRONG> <STRONG>*,</STRONG> <STRONG>void</STRONG> <STRONG>*);</STRONG>
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<STRONG>typedef</STRONG> <STRONG>int</STRONG> <STRONG>(*NCURSES_SCREEN_CB)(SCREEN</STRONG> <STRONG>*,</STRONG> <STRONG>void</STRONG> <STRONG>*);</STRONG>
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<STRONG>int</STRONG> <STRONG>get_escdelay(void);</STRONG>
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<STRONG>int</STRONG> <STRONG>set_escdelay(int</STRONG> <STRONG>size);</STRONG>
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<STRONG>int</STRONG> <STRONG>set_tabsize(int</STRONG> <STRONG>size);</STRONG>
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<STRONG>int</STRONG> <STRONG>use_screen(SCREEN</STRONG> <STRONG>*scr,</STRONG> <STRONG>NCURSES_SCREEN_CB</STRONG> <STRONG>func,</STRONG> <STRONG>void</STRONG>
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<STRONG>*data);</STRONG>
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<STRONG>int</STRONG> <STRONG>use_window(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>NCURSES_WINDOW_CB</STRONG> <STRONG>func,</STRONG> <STRONG>void</STRONG>
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<STRONG>*data);</STRONG>
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</PRE>
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<H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
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This implementation can be configured to provide rudimen-
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tary support for multi-threaded applications. This makes
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a different set of libraries, e.g., <EM>libncursest</EM> since the
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binary interfaces are different.
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Rather than modify the interfaces to pass a thread speci-
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fier to each function, it adds a few functions which can
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be used in any configuration which hide the mutex's needed
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to prevent concurrent use of the global variables when
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configured for threading.
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In addition to forcing access to members of the <STRONG>WINDOW</STRONG>
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structure to be via functions (see <STRONG><A HREF="curs_opaque.3x.html">curs_opaque(3x)</A></STRONG>), it
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makes functions of the common global variables, e.g., COL-
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ORS, COLOR_PAIRS, COLS, ESCDELAY, LINES, TABSIZE curscr,
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newscr and ttytype. Those variables are maintained as
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read-only values, stored in the <STRONG>SCREEN</STRONG> structure.
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Even this is not enough to make a thread-safe application
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using curses. A multi-threaded application would be ex-
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pected to have threads updating separate windows (within
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the same device), or updating on separate screens (on dif-
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ferent devices). Also, a few of the global variables are
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considered writable by some applications. The functions
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described here address these special situations.
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The ESCDELAY and TABSIZE global variables are modified by
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some applications. To modify them in any configuration,
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use the <STRONG>set_escdelay</STRONG> or <STRONG>set_tabsize</STRONG> functions. Other
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global variables are not modifiable.
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The <STRONG>get_escdelay</STRONG> function returns the value for ESCDELAY.
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The <STRONG>use_window</STRONG> and <STRONG>use_screen</STRONG> functions provide coarse
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granularity mutexes for their respective <STRONG>WINDOW</STRONG> and <STRONG>SCREEN</STRONG>
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parameters, and call a user-supplied function, passing it
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a <EM>data</EM> parameter, and returning the value from the user-
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supplied function to the application.
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</PRE>
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<H3><a name="h3-USAGE">USAGE</a></H3><PRE>
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All of the ncurses library functions assume that the lo-
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cale is not altered during operation. In addition, they
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use data which is maintained within a hierarchy of scopes.
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<STRONG>o</STRONG> global data, e.g., used in the low-level terminfo
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or termcap interfaces.
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<STRONG>o</STRONG> terminal data, e.g., associated with a call to
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<EM>set</EM><STRONG>_</STRONG><EM>curterm</EM>. The terminal data are initialized
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when screens are created.
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<STRONG>o</STRONG> screen data, e.g., associated with a call to
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<EM>newterm</EM> or <EM>initscr</EM>.
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<STRONG>o</STRONG> window data, e.g., associated with a call to <EM>newwin</EM>
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or <EM>subwin</EM>. Windows are associated with screens.
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Pads are not necessarily associated with a particu-
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lar screen.
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Most curses applications operate on one or more
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windows within a single screen.
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<STRONG>o</STRONG> reentrant, i.e., it uses only the data passed as
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parameters.
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This table lists the scope of data used for each symbol in
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the ncurses library when it is configured to support
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threading:
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Symbol Scope
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-------------------------------------------------------------
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BC global
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COLORS screen (readonly)
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COLOR_PAIR reentrant
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COLOR_PAIRS screen (readonly)
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COLS screen (readonly)
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ESCDELAY screen (readonly, see <EM>set</EM><STRONG>_</STRONG><EM>escdelay</EM>)
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LINES screen (readonly)
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PAIR_NUMBER reentrant
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PC global
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SP global
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TABSIZE screen (readonly)
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UP global
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acs_map screen (readonly)
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add_wch window (stdscr)
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add_wchnstr window (stdscr)
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add_wchstr window (stdscr)
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addch window (stdscr)
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addchnstr window (stdscr)
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addchstr window (stdscr)
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addnstr window (stdscr)
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addnwstr window (stdscr)
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addstr window (stdscr)
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addwstr window (stdscr)
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assume_default_colors screen
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attr_get window (stdscr)
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attr_off window (stdscr)
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attr_on window (stdscr)
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attr_set window (stdscr)
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attroff window (stdscr)
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attron window (stdscr)
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attrset window (stdscr)
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baudrate screen
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beep screen
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bkgd window (stdscr)
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bkgdset window (stdscr)
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bkgrnd window (stdscr)
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bkgrndset window (stdscr)
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boolcodes global (readonly)
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boolfnames global (readonly)
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boolnames global (readonly)
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border window (stdscr)
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border_set window (stdscr)
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box window (stdscr)
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box_set window (stdscr)
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can_change_color terminal
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cbreak screen
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chgat window (stdscr)
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clear window (stdscr)
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clearok window
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clrtobot window (stdscr)
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clrtoeol window (stdscr)
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color_content screen
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color_set window (stdscr)
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copywin window locks(source, target)
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cur_term terminal
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curs_set screen
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curscr screen (readonly)
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curses_version global (readonly)
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def_prog_mode terminal
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def_shell_mode terminal
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define_key screen
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del_curterm screen
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delay_output screen
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delch window (stdscr)
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deleteln window (stdscr)
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delscreen global locks(screenlist, screen)
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delwin global locks(windowlist)
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derwin screen
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doupdate screen
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dupwin screen locks(window)
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echo screen
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echo_wchar window (stdscr)
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echochar window (stdscr)
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endwin screen
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erase window (stdscr)
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erasechar window (stdscr)
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erasewchar window (stdscr)
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filter global
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flash terminal
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flushinp screen
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get_wch screen (input-operation)
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get_wstr screen (input-operation)
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getattrs window
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getbegx window
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getbegy window
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getbkgd window
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getbkgrnd window
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getcchar reentrant
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getch screen (input-operation)
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getcurx window
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getcury window
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getmaxx window
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getmaxy window
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getmouse screen (input-operation)
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getn_wstr screen (input-operation)
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getnstr screen (input-operation)
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getparx window
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getpary window
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getstr screen (input-operation)
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getwin screen (input-operation)
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halfdelay screen
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has_colors terminal
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has_ic terminal
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has_il terminal
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has_key screen
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hline window (stdscr)
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hline_set window (stdscr)
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idcok window
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idlok window
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immedok window
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in_wch window (stdscr)
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in_wchnstr window (stdscr)
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in_wchstr window (stdscr)
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inch window (stdscr)
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inchnstr window (stdscr)
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inchstr window (stdscr)
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init_color screen
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init_pair screen
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initscr global locks(screenlist)
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innstr window (stdscr)
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innwstr window (stdscr)
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ins_nwstr window (stdscr)
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ins_wch window (stdscr)
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ins_wstr window (stdscr)
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insch window (stdscr)
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insdelln window (stdscr)
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insertln window (stdscr)
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insnstr window (stdscr)
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insstr window (stdscr)
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instr window (stdscr)
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intrflush terminal
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inwstr window (stdscr)
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is_cleared window
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is_idcok window
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is_idlok window
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is_immedok window
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is_keypad window
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is_leaveok window
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is_linetouched window
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is_nodelay window
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is_notimeout window
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is_scrollok window
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is_syncok window
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is_term_resized terminal
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is_wintouched window
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isendwin screen
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key_defined screen
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key_name global (static data)
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keybound screen
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keyname global (static data)
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keyok screen
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keypad window
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killchar terminal
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killwchar terminal
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leaveok window
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longname screen
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mcprint terminal
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meta screen
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mouse_trafo window (stdscr)
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mouseinterval screen
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mousemask screen
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move window (stdscr)
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mvadd_wch window (stdscr)
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mvadd_wchnstr window (stdscr)
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mvadd_wchstr window (stdscr)
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mvaddch window (stdscr)
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mvaddchnstr window (stdscr)
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mvaddchstr window (stdscr)
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mvaddnstr window (stdscr)
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mvaddnwstr window (stdscr)
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mvaddstr window (stdscr)
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mvaddwstr window (stdscr)
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mvchgat window (stdscr)
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mvcur screen
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mvdelch window (stdscr)
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mvderwin window (stdscr)
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mvget_wch screen (input-operation)
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mvget_wstr screen (input-operation)
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mvgetch screen (input-operation)
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mvgetn_wstr screen (input-operation)
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mvgetnstr screen (input-operation)
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mvgetstr screen (input-operation)
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mvhline window (stdscr)
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mvhline_set window (stdscr)
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mvin_wch window (stdscr)
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mvin_wchnstr window (stdscr)
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mvin_wchstr window (stdscr)
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mvinch window (stdscr)
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mvinchnstr window (stdscr)
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mvinchstr window (stdscr)
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mvinnstr window (stdscr)
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mvinnwstr window (stdscr)
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mvins_nwstr window (stdscr)
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mvins_wch window (stdscr)
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mvins_wstr window (stdscr)
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mvinsch window (stdscr)
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mvinsnstr window (stdscr)
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mvinsstr window (stdscr)
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mvinstr window (stdscr)
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mvinwstr window (stdscr)
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mvprintw window (stdscr)
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mvscanw screen
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mvvline window (stdscr)
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mvvline_set window (stdscr)
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mvwadd_wch window
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mvwadd_wchnstr window
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mvwadd_wchstr window
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mvwaddch window
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mvwaddchnstr window
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mvwaddchstr window
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mvwaddnstr window
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mvwaddnwstr window
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mvwaddstr window
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mvwaddwstr window
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mvwchgat window
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mvwdelch window
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mvwget_wch screen (input-operation)
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mvwget_wstr screen (input-operation)
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mvwgetch screen (input-operation)
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mvwgetn_wstr screen (input-operation)
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mvwgetnstr screen (input-operation)
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mvwgetstr screen (input-operation)
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mvwhline window
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mvwhline_set window
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mvwin window
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mvwin_wch window
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mvwin_wchnstr window
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mvwin_wchstr window
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mvwinch window
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mvwinchnstr window
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mvwinchstr window
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mvwinnstr window
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mvwinnwstr window
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mvwins_nwstr window
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mvwins_wch window
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mvwins_wstr window
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mvwinsch window
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mvwinsnstr window
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mvwinsstr window
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mvwinstr window
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mvwinwstr window
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mvwprintw window
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mvwscanw screen
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mvwvline window
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mvwvline_set window
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napms reentrant
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newpad global locks(windowlist)
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newscr screen (readonly)
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newterm global locks(screenlist)
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newwin global locks(windowlist)
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nl screen
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nocbreak screen
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nodelay window
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noecho screen
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nofilter global
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nonl screen
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noqiflush terminal
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noraw screen
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notimeout window
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numcodes global (readonly)
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numfnames global (readonly)
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numnames global (readonly)
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ospeed global
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overlay window locks(source, target)
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overwrite window locks(source, target)
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pair_content screen
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pecho_wchar screen
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pechochar screen
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pnoutrefresh screen
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prefresh screen
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printw window
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putp global
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putwin window
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qiflush terminal
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raw screen
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redrawwin window
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refresh screen
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reset_prog_mode screen
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reset_shell_mode screen
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resetty terminal
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resize_term screen locks(windowlist)
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resizeterm screen
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restartterm screen
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ripoffline global (static data)
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savetty terminal
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scanw screen
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scr_dump screen
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scr_init screen
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scr_restore screen
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scr_set screen
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scrl window (stdscr)
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scroll window
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scrollok window
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set_curterm screen
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set_escdelay screen
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set_tabsize screen
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set_term global locks(screenlist, screen)
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setcchar reentrant
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setscrreg window (stdscr)
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setupterm global
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slk_attr screen
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slk_attr_off screen
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slk_attr_on screen
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slk_attr_set screen
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slk_attroff screen
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slk_attron screen
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slk_attrset screen
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slk_clear screen
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slk_color screen
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slk_init screen
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slk_label screen
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slk_noutrefresh screen
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slk_refresh screen
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slk_restore screen
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slk_set screen
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slk_touch screen
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slk_wset screen
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standend window
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standout window
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start_color screen
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stdscr screen (readonly)
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strcodes global (readonly)
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strfnames global (readonly)
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strnames global (readonly)
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subpad window
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subwin window
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syncok window
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term_attrs screen
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termattrs screen
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termname terminal
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tgetent global
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tgetflag global
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tgetnum global
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tgetstr global
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tgoto global
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tigetflag terminal
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tigetnum terminal
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tigetstr terminal
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timeout window (stdscr)
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touchline window
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touchwin window
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tparm global (static data)
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tputs screen
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trace global (static data)
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ttytype screen (readonly)
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typeahead screen
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unctrl screen
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unget_wch screen (input-operation)
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ungetch screen (input-operation)
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ungetmouse screen (input-operation)
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untouchwin window
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use_default_colors screen
|
|
use_env global (static data)
|
|
use_extended_names global (static data)
|
|
use_legacy_coding screen
|
|
use_screen global locks(screenlist, screen)
|
|
use_window global locks(windowlist, window)
|
|
vid_attr screen
|
|
vid_puts screen
|
|
vidattr screen
|
|
vidputs screen
|
|
vline window (stdscr)
|
|
vline_set window (stdscr)
|
|
vw_printw window
|
|
vw_scanw screen
|
|
vwprintw window
|
|
vwscanw screen
|
|
wadd_wch window
|
|
wadd_wchnstr window
|
|
wadd_wchstr window
|
|
waddch window
|
|
|
|
waddchnstr window
|
|
waddchstr window
|
|
waddnstr window
|
|
waddnwstr window
|
|
waddstr window
|
|
waddwstr window
|
|
wattr_get window
|
|
wattr_off window
|
|
wattr_on window
|
|
wattr_set window
|
|
wattroff window
|
|
wattron window
|
|
wattrset window
|
|
wbkgd window
|
|
wbkgdset window
|
|
wbkgrnd window
|
|
wbkgrndset window
|
|
wborder window
|
|
wborder_set window
|
|
wchgat window
|
|
wclear window
|
|
wclrtobot window
|
|
wclrtoeol window
|
|
wcolor_set window
|
|
wcursyncup screen (affects window plus parents)
|
|
wdelch window
|
|
wdeleteln window
|
|
wecho_wchar window
|
|
wechochar window
|
|
wenclose window
|
|
werase window
|
|
wget_wch screen (input-operation)
|
|
wget_wstr screen (input-operation)
|
|
wgetbkgrnd window
|
|
wgetch screen (input-operation)
|
|
wgetdelay window
|
|
wgetn_wstr screen (input-operation)
|
|
wgetnstr screen (input-operation)
|
|
wgetparent window
|
|
wgetscrreg window
|
|
wgetstr screen (input-operation)
|
|
whline window
|
|
whline_set window
|
|
win_wch window
|
|
win_wchnstr window
|
|
win_wchstr window
|
|
winch window
|
|
winchnstr window
|
|
winchstr window
|
|
winnstr window
|
|
winnwstr window
|
|
wins_nwstr window
|
|
wins_wch window
|
|
wins_wstr window
|
|
winsch window
|
|
winsdelln window
|
|
winsertln window
|
|
winsnstr window
|
|
winsstr window
|
|
winstr window
|
|
winwstr window
|
|
wmouse_trafo window
|
|
wmove window
|
|
wnoutrefresh screen
|
|
wprintw window
|
|
wredrawln window
|
|
|
|
wrefresh screen
|
|
wresize window locks(windowlist)
|
|
wscanw screen
|
|
wscrl window
|
|
wsetscrreg window
|
|
wstandend window
|
|
wstandout window
|
|
wsyncdown screen (affects window plus parents)
|
|
wsyncup screen (affects window plus parents)
|
|
wtimeout window
|
|
wtouchln window
|
|
wunctrl global (static data)
|
|
wvline window
|
|
wvline_set window
|
|
|
|
|
|
</PRE>
|
|
<H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
|
|
These functions all return TRUE or FALSE, except as noted.
|
|
|
|
|
|
</PRE>
|
|
<H2><a name="h2-NOTES">NOTES</a></H2><PRE>
|
|
Both a macro and a function are provided for each name.
|
|
|
|
|
|
</PRE>
|
|
<H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
|
|
These routines are specific to ncurses. They were not
|
|
supported on Version 7, BSD or System V implementations.
|
|
It is recommended that any code depending on ncurses ex-
|
|
tensions be conditioned using NCURSES_VERSION.
|
|
|
|
|
|
</PRE>
|
|
<H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
|
|
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_opaque.3x.html">curs_opaque(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>.
|
|
|
|
|
|
|
|
<STRONG><A HREF="curs_threads.3x.html">curs_threads(3x)</A></STRONG>
|
|
</PRE>
|
|
<div class="nav">
|
|
<ul>
|
|
<li><a href="#h2-NAME">NAME</a></li>
|
|
<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
|
|
<li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
|
|
<ul>
|
|
<li><a href="#h3-USAGE">USAGE</a></li>
|
|
</ul>
|
|
</li>
|
|
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
|
|
<li><a href="#h2-NOTES">NOTES</a></li>
|
|
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
|
|
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
|
|
</ul>
|
|
</div>
|
|
</BODY>
|
|
</HTML>
|