ncurses 5.6 - patch 20070612

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

diff --git a/man/curs_window.3x b/man/curs_window.3x
index 4d3ca4ca00c30489462dff43562b37b78a7f5060..552862e9e253a1a1b20256d5269e7dacfeafb883 100644 (file)
--- a/man/curs_window.3x
+++ b/man/curs_window.3x
@@ -1,5 +1,5 @@
 .\"***************************************************************************
 .\"***************************************************************************

-.\" Copyright (c) 1998,2000 Free Software Foundation, Inc.                   *
+.\" Copyright (c) 1998-2005,2006 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            *


@@ -26,8 +26,10 @@
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"

-.\" $Id: curs_window.3x,v 1.9 2000/07/01 20:08:37 tom Exp $
+.\" $Id: curs_window.3x,v 1.14 2006/02/25 21:49:19 tom Exp $

 .TH curs_window 3X ""
 .TH curs_window 3X ""

+.na
+.hy 0

 .SH NAME
 \fBnewwin\fR,
 \fBdelwin\fR,
 .SH NAME
 \fBnewwin\fR,
 \fBdelwin\fR,


@@ -40,9 +42,11 @@
 \fBsyncok\fR,
 \fBwcursyncup\fR,
 \fBwsyncdown\fR - create \fBcurses\fR windows
 \fBsyncok\fR,
 \fBwcursyncup\fR,
 \fBwsyncdown\fR - create \fBcurses\fR windows

+.ad
+.hy

 .SH SYNOPSIS
 \fB#include <curses.h>\fR
 .SH SYNOPSIS
 \fB#include <curses.h>\fR

-
+.sp

 \fBWINDOW *newwin(int nlines, int ncols, int begin_y,\fR
       \fBint begin_x);\fR
 .br
 \fBWINDOW *newwin(int nlines, int ncols, int begin_y,\fR
       \fBint begin_x);\fR
 .br


@@ -75,17 +79,17 @@ at line \fIbegin\fR_\fIy\fR, column \fIbegin\fR_\fIx\fR.  If either
 \fInlines\fR or \fIncols\fR is zero, they default to \fBLINES -\fR
 \fIbegin\fR_\fIy\fR and \fBCOLS -\fR \fIbegin\fR_\fIx\fR.  A new full-screen
 window is created by calling \fBnewwin(0,0,0,0)\fR.
 \fInlines\fR or \fIncols\fR is zero, they default to \fBLINES -\fR
 \fIbegin\fR_\fIy\fR and \fBCOLS -\fR \fIbegin\fR_\fIx\fR.  A new full-screen
 window is created by calling \fBnewwin(0,0,0,0)\fR.

-
+.PP

 Calling \fBdelwin\fR deletes the named window, freeing all memory
 associated with it (it does not actually erase the window's screen
 image).  Subwindows must be deleted before the main window can be
 deleted.
 Calling \fBdelwin\fR deletes the named window, freeing all memory
 associated with it (it does not actually erase the window's screen
 image).  Subwindows must be deleted before the main window can be
 deleted.

-
+.PP

 Calling \fBmvwin\fR moves the window so that the upper left-hand
 corner is at position (\fIx\fR, \fIy\fR).  If the move would cause the
 window to be off the screen, it is an error and the window is not
 moved.  Moving subwindows is allowed, but should be avoided.
 Calling \fBmvwin\fR moves the window so that the upper left-hand
 corner is at position (\fIx\fR, \fIy\fR).  If the move would cause the
 window to be off the screen, it is an error and the window is not
 moved.  Moving subwindows is allowed, but should be avoided.

-
+.PP

 Calling \fBsubwin\fR creates and returns a pointer to a new window
 with the given number of lines, \fInlines\fR, and columns,
 \fIncols\fR.  The window is at position (\fIbegin\fR_\fIy\fR,
 Calling \fBsubwin\fR creates and returns a pointer to a new window
 with the given number of lines, \fInlines\fR, and columns,
 \fIncols\fR.  The window is at position (\fIbegin\fR_\fIy\fR,


@@ -96,29 +100,29 @@ will affect both windows.  The subwindow shares memory with the window
 \fIorig\fR.  When using this routine, it is necessary to call
 \fBtouchwin\fR or \fBtouchline\fR on \fIorig\fR before calling
 \fBwrefresh\fR on the subwindow.
 \fIorig\fR.  When using this routine, it is necessary to call
 \fBtouchwin\fR or \fBtouchline\fR on \fIorig\fR before calling
 \fBwrefresh\fR on the subwindow.

-
+.PP

 Calling \fBderwin\fR is the same as calling \fBsubwin,\fR except that
 \fIbegin\fR_\fIy\fR and \fIbegin\fR_\fIx\fR are relative to the origin
 of the window \fIorig\fR rather than the screen.  There is no
 difference between the subwindows and the derived windows.
 Calling \fBderwin\fR is the same as calling \fBsubwin,\fR except that
 \fIbegin\fR_\fIy\fR and \fIbegin\fR_\fIx\fR are relative to the origin
 of the window \fIorig\fR rather than the screen.  There is no
 difference between the subwindows and the derived windows.

-
+.PP

 Calling \fBmvderwin\fR moves a derived window (or subwindow)
 inside its parent window.  The screen-relative parameters of the
 window are not changed.  This routine is used to display different
 parts of the parent window at the same physical position on the
 screen.
 Calling \fBmvderwin\fR moves a derived window (or subwindow)
 inside its parent window.  The screen-relative parameters of the
 window are not changed.  This routine is used to display different
 parts of the parent window at the same physical position on the
 screen.

-
+.PP

 Calling \fBdupwin\fR creates an exact duplicate of the window \fIwin\fR.
 Calling \fBdupwin\fR creates an exact duplicate of the window \fIwin\fR.

-
+.PP

 Calling \fBwsyncup\fR touches all locations in ancestors of \fIwin\fR that are
 changed in \fIwin\fR.  If \fBsyncok\fR is called with second argument
 \fBTRUE\fR then \fBwsyncup\fR is called automatically whenever there is a
 change in the window.
 Calling \fBwsyncup\fR touches all locations in ancestors of \fIwin\fR that are
 changed in \fIwin\fR.  If \fBsyncok\fR is called with second argument
 \fBTRUE\fR then \fBwsyncup\fR is called automatically whenever there is a
 change in the window.

-
+.PP

 The \fBwsyncdown\fR routine touches each location in \fIwin\fR that has been
 touched in any of its ancestor windows.  This routine is called by
 \fBwrefresh\fR, so it should almost never be necessary to call it manually.
 The \fBwsyncdown\fR routine touches each location in \fIwin\fR that has been
 touched in any of its ancestor windows.  This routine is called by
 \fBwrefresh\fR, so it should almost never be necessary to call it manually.

-
+.PP

 The routine \fBwcursyncup\fR updates the current cursor position of all the
 ancestors of the window to reflect the current cursor position of the
 window.
 The routine \fBwcursyncup\fR updates the current cursor position of all the
 ancestors of the window to reflect the current cursor position of the
 window.


@@ -126,23 +130,48 @@ window.
 Routines that return an integer return the integer \fBERR\fR upon failure and
 \fBOK\fR (SVr4 only specifies "an integer value other than \fBERR\fR") upon
 successful completion.
 Routines that return an integer return the integer \fBERR\fR upon failure and
 \fBOK\fR (SVr4 only specifies "an integer value other than \fBERR\fR") upon
 successful completion.

-
-\fBdelwin\fR returns the integer \fBERR\fR upon failure and \fBOK\fR
-upon successful completion.
-
+.PP

 Routines that return pointers return \fBNULL\fR on error.
 Routines that return pointers return \fBNULL\fR on error.

+.PP
+X/Open defines no error conditions.
+In this implementation
+.RS
+.TP 5
+\fBdelwin\fR
+returns an error if the window pointer is null, or
+if the window is the parent of another window.
+.IP
+This implementation also maintains a list of windows,
+and checks that the pointer passed to \fBdelwin\fP is one that
+it created, returning an error if it was not..
+.TP 5
+\fBmvderwin\fP
+returns an error
+if the window pointer is null, or
+if some part of the window would be placed off-screen.
+.TP 5
+\fBmvwin\fP
+returns an error
+if the window pointer is null, or
+if the window is really a pad, or
+if some part of the window would be placed off-screen.
+.TP 5
+\fBsyncok\fP
+returns an error
+if the window pointer is null.
+.RE

 .SH NOTES
 If many small changes are made to the window, the \fBwsyncup\fR option could
 degrade performance.
 .SH NOTES
 If many small changes are made to the window, the \fBwsyncup\fR option could
 degrade performance.

-
+.PP

 Note that \fBsyncok\fR may be a macro.
 .SH BUGS
 The subwindow functions (\fIsubwin\fR, \fIderwin\fR, \fImvderwin\fR,
 \fBwsyncup\fR, \fBwsyncdown\fR, \fBwcursyncup\fR, \fBsyncok\fR) are flaky,
 incompletely implemented, and not well tested.
 Note that \fBsyncok\fR may be a macro.
 .SH BUGS
 The subwindow functions (\fIsubwin\fR, \fIderwin\fR, \fImvderwin\fR,
 \fBwsyncup\fR, \fBwsyncdown\fR, \fBwcursyncup\fR, \fBsyncok\fR) are flaky,
 incompletely implemented, and not well tested.

-
+.PP

 The System V curses documentation is very unclear about what \fBwsyncup\fR
 The System V curses documentation is very unclear about what \fBwsyncup\fR

-and \fBwsyncdown\fR actually do.  It seems to imply that they are only 
+and \fBwsyncdown\fR actually do.  It seems to imply that they are only

 supposed to touch exactly those lines that are affected by ancestor changes.
 The language here, and the behavior of the \fBcurses\fR implementation,
 is patterned on the XPG4 curses standard.  The weaker XPG4 spec may result
 supposed to touch exactly those lines that are affected by ancestor changes.
 The language here, and the behavior of the \fBcurses\fR implementation,
 is patterned on the XPG4 curses standard.  The weaker XPG4 spec may result