ncurses 6.2 - patch 20201219

[ncurses.git] / man / curs_initscr.3x

diff --git a/man/curs_initscr.3x b/man/curs_initscr.3x
index 6c8a2d06d795bd1f7a4ce6a5a24647dba3d52f0c..235a5aa715bbc036b979696cf52f14076bbc2b55 100644 (file)
--- a/man/curs_initscr.3x
+++ b/man/curs_initscr.3x
@@ -1,5 +1,6 @@
 .\"***************************************************************************
 .\"***************************************************************************

-.\" Copyright (c) 1998-2016,2017 Free Software Foundation, Inc.              *
+.\" Copyright 2018,2020 Thomas E. Dickey                                     *
+.\" Copyright 1998-2016,2017 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            *
 .\"                                                                          *
 .\" Permission is hereby granted, free of charge, to any person obtaining a  *
 .\" copy of this software and associated documentation files (the            *


@@ -26,10 +27,11 @@
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"

-.\" $Id: curs_initscr.3x,v 1.26 2017/01/07 19:25:15 tom Exp $
+.\" $Id: curs_initscr.3x,v 1.33 2020/10/17 23:20:48 tom Exp $

 .TH curs_initscr 3X ""
 .de bP
 .TH curs_initscr 3X ""
 .de bP

-.IP \(bu 4
+.ie n  .IP \(bu 4
+.el    .IP \(bu 2

 ..
 .ie \n(.g .ds `` \(lq
 .el       .ds `` ``
 ..
 .ie \n(.g .ds `` \(lq
 .el       .ds `` ``


@@ -52,10 +54,10 @@
 \fBWINDOW *initscr(void);\fR
 .br
 \fBint endwin(void);\fR
 \fBWINDOW *initscr(void);\fR
 .br
 \fBint endwin(void);\fR

-.br
+.sp

 \fBbool isendwin(void);\fR
 \fBbool isendwin(void);\fR

-.br
-\fBSCREEN *newterm(char *\fP\fItype\fP\fB, FILE *\fP\fIoutfd\fP\fB, FILE *\fP\fIinfd\fP\fB);\fR
+.sp
+\fBSCREEN *newterm(const char *\fP\fItype\fP\fB, FILE *\fP\fIoutfd\fP\fB, FILE *\fP\fIinfd\fP\fB);\fR

 .br
 \fBSCREEN *set_term(SCREEN *\fP\fInew\fP\fB);\fR
 .br
 .br
 \fBSCREEN *set_term(SCREEN *\fP\fInew\fP\fB);\fR
 .br


@@ -73,7 +75,8 @@ For multiple-terminal applications,
 .PP
 The initscr code determines the terminal type and initializes all \fBcurses\fR
 data structures.
 .PP
 The initscr code determines the terminal type and initializes all \fBcurses\fR
 data structures.

-\fBinitscr\fR also causes the first call to \fBrefresh\fR(3X) to clear the screen.
+\fBinitscr\fR also causes the first call to \fBrefresh\fR(3X)
+to clear the screen.

 If errors occur, \fBinitscr\fR writes an appropriate error
 message to standard error and exits;
 otherwise, a pointer is returned to \fBstdscr\fR.
 If errors occur, \fBinitscr\fR writes an appropriate error
 message to standard error and exits;
 otherwise, a pointer is returned to \fBstdscr\fR.


@@ -108,14 +111,19 @@ A program should always call \fBendwin\fR before exiting or escaping from
 \fBcurses\fR mode temporarily.
 This routine
 .bP
 \fBcurses\fR mode temporarily.
 This routine
 .bP

-restores tty modes,
+resets colors to correspond with the default color pair 0,
+.bP
+moves the cursor to the lower left-hand corner of the screen,
+.bP
+clears the remainder of the line so that it uses the default colors,
+.bP
+sets the cursor to normal visibility (see \fBcurs_set\fP(3X)),

 .bP
 .bP

-moves the cursor to the lower left-hand corner of the screen and
+stops cursor-addressing mode using the \fIexit_ca_mode\fP terminal capability,

 .bP
 .bP

-resets the terminal into
-the proper non-visual mode.
+restores tty modes (see \fBreset_shell_mode\fP(3X)).

 .PP
 .PP

-Calling \fBrefresh\fR(3X) or \fBdoupdate\fR after a
+Calling \fBrefresh\fR(3X) or \fBdoupdate\fR(3X) after a

 temporary escape causes the program to resume visual mode.
 .SS isendwin
 .PP
 temporary escape causes the program to resume visual mode.
 .SS isendwin
 .PP


@@ -155,8 +163,6 @@ i.e.,
 .bP
 \fBset_term\fP
 returns no error.
 .bP
 \fBset_term\fP
 returns no error.

-.SH NOTES
-Note that \fBinitscr\fR and \fBnewterm\fR may be macros.

 .SH PORTABILITY
 These functions were described in the XSI Curses standard, Issue 4.
 As of 2015, the current document is X/Open Curses, Issue 7.
 .SH PORTABILITY
 These functions were described in the XSI Curses standard, Issue 4.
 As of 2015, the current document is X/Open Curses, Issue 7.


@@ -165,7 +171,8 @@ X/Open specifies that portable applications must not
 call \fBinitscr\fR more than once:
 .bP
 The portable way to use \fBinitscr\fP is once only,
 call \fBinitscr\fR more than once:
 .bP
 The portable way to use \fBinitscr\fP is once only,

-using \fBrefresh\fP (see curs_refresh(3X)) to restore the screen after \fBendwin\fP.
+using \fBrefresh\fP (see curs_refresh(3X))
+to restore the screen after \fBendwin\fP.

 .bP
 This implementation allows using \fBinitscr\fP after \fBendwin\fP.
 .PP
 .bP
 This implementation allows using \fBinitscr\fP after \fBendwin\fP.
 .PP


@@ -179,23 +186,25 @@ If the TERM variable is missing or empty, \fBinitscr\fP uses the
 value \*(``unknown\*('',
 which normally corresponds to a terminal entry with the \fIgeneric\fP
 (\fIgn\fP) capability.
 value \*(``unknown\*('',
 which normally corresponds to a terminal entry with the \fIgeneric\fP
 (\fIgn\fP) capability.

-Generic entries are detected by \fBsetupterm\fP (see curs_terminfo(3X)) and cannot be
-used for full-screen operation.
+Generic entries are detected by \fBsetupterm\fP
+(see curs_terminfo(3X)) and cannot be used for full-screen operation.

 Other implementations may handle a missing/empty TERM variable differently.
 .SS Signal Handlers
 .PP
 Quoting from X/Open Curses, section 3.1.1:
 .RS 5
 .PP
 Other implementations may handle a missing/empty TERM variable differently.
 .SS Signal Handlers
 .PP
 Quoting from X/Open Curses, section 3.1.1:
 .RS 5
 .PP

-\fICurses implementations may provide for special handling of the SIGINT,
-SIGQUIT and SIGTSTP signals if their disposition is SIG_DFL at the time
+\fICurses implementations may provide for special handling of the \fBSIGINT\fP,
+\fBSIGQUIT\fP and \fBSIGTSTP\fP signals
+if their disposition is \fBSIG_DFL\fP at the time

 \fBinitscr\fP is called \fP...
 .PP
 \fIAny special handling for these signals may remain in effect for the
 life of the process or until the process changes the disposition of
 the signal.\fP
 .PP
 \fBinitscr\fP is called \fP...
 .PP
 \fIAny special handling for these signals may remain in effect for the
 life of the process or until the process changes the disposition of
 the signal.\fP
 .PP

-\fINone of the Curses functions are required to be safe with respect to signals \fP...
+\fINone of the Curses functions are required to be safe
+with respect to signals \fP...

 .RE
 .PP
 This implementation establishes signal handlers during initialization,
 .RE
 .PP
 This implementation establishes signal handlers during initialization,


@@ -228,10 +237,11 @@ This handles the \fIstop\fP signal, used in job control.
 When resuming the process, this implementation discards pending
 input with \fBflushinput\fP (see curs_util(3X)), and repaints the screen
 assuming that it has been completely altered.
 When resuming the process, this implementation discards pending
 input with \fBflushinput\fP (see curs_util(3X)), and repaints the screen
 assuming that it has been completely altered.

-It also updates the saved terminal modes with \fBdef_shell_mode\fP (see curs_kernel(3X)).
+It also updates the saved terminal modes with \fBdef_shell_mode\fP
+(see \fBcurs_kernel\fR(3X)).

 .TP 5
 .B SIGWINCH
 .TP 5
 .B SIGWINCH

-This handles the window-size changes which were initially ignored in
+This handles the window-size changes which were ignored in

 the standardization efforts.
 The handler sets a (signal-safe) variable
 which is later tested in \fBwgetch\fP (see curs_getch(3X)).
 the standardization efforts.
 The handler sets a (signal-safe) variable
 which is later tested in \fBwgetch\fP (see curs_getch(3X)).