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-<HTML>
-<HEAD>
-<TITLE>curs_window 3x</TITLE>
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-</HEAD>
-<BODY>
-<H1>curs_window 3x</H1>
-<HR>
-<PRE>
-<!-- Manpage converted by man2html 3.0.1 -->
-
-</PRE>
-<H2>NAME</H2><PRE>
- <STRONG>newwin</STRONG>, <STRONG>delwin</STRONG>, <STRONG>mvwin</STRONG>, <STRONG>subwin</STRONG>, <STRONG>derwin</STRONG>, <STRONG>mvderwin</STRONG>, <STRONG>dupwin</STRONG>,
- <STRONG>wsyncup</STRONG>, <STRONG>syncok</STRONG>, <STRONG>wcursyncup</STRONG>, <STRONG>wsyncdown</STRONG> - create <STRONG>curses</STRONG>
- windows
-
-
-</PRE>
-<H2>SYNOPSIS</H2><PRE>
- <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
-
- <STRONG>WINDOW</STRONG> <STRONG>*newwin(int</STRONG> <STRONG>nlines,</STRONG> <STRONG>int</STRONG> <STRONG>ncols,</STRONG> <STRONG>int</STRONG> <STRONG>begin_y,</STRONG>
- <STRONG>int</STRONG> <STRONG>begin_x);</STRONG>
- <STRONG>int</STRONG> <STRONG>delwin(WINDOW</STRONG> <STRONG>*win);</STRONG>
- <STRONG>int</STRONG> <STRONG>mvwin(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x);</STRONG>
- <STRONG>WINDOW</STRONG> <STRONG>*subwin(WINDOW</STRONG> <STRONG>*orig,</STRONG> <STRONG>int</STRONG> <STRONG>nlines,</STRONG> <STRONG>int</STRONG> <STRONG>ncols,</STRONG>
- <STRONG>int</STRONG> <STRONG>begin_y,</STRONG> <STRONG>int</STRONG> <STRONG>begin_x);</STRONG>
- <STRONG>WINDOW</STRONG> <STRONG>*derwin(WINDOW</STRONG> <STRONG>*orig,</STRONG> <STRONG>int</STRONG> <STRONG>nlines,</STRONG> <STRONG>int</STRONG> <STRONG>ncols,</STRONG>
- <STRONG>int</STRONG> <STRONG>begin_y,</STRONG> <STRONG>int</STRONG> <STRONG>begin_x);</STRONG>
- <STRONG>int</STRONG> <STRONG>mvderwin(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>par_y,</STRONG> <STRONG>int</STRONG> <STRONG>par_x);</STRONG>
- <STRONG>WINDOW</STRONG> <STRONG>*dupwin(WINDOW</STRONG> <STRONG>*win);</STRONG>
- <STRONG>void</STRONG> <STRONG>wsyncup(WINDOW</STRONG> <STRONG>*win);</STRONG>
- <STRONG>int</STRONG> <STRONG>syncok(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG>
- <STRONG>void</STRONG> <STRONG>wcursyncup(WINDOW</STRONG> <STRONG>*win);</STRONG>
- <STRONG>void</STRONG> <STRONG>wsyncdown(WINDOW</STRONG> <STRONG>*win);</STRONG>
-
-
-</PRE>
-<H2>DESCRIPTION</H2><PRE>
- Calling <STRONG>newwin</STRONG> creates and returns a pointer to a new win-
- dow with the given number of lines and columns. The upper
- left-hand corner of the window is at line <EM>begin</EM>_<EM>y</EM>, column
- <EM>begin</EM>_<EM>x</EM>. If either <EM>nlines</EM> or <EM>ncols</EM> is zero, they default
- to <STRONG>LINES</STRONG> <STRONG>-</STRONG> <EM>begin</EM>_<EM>y</EM> and <STRONG>COLS</STRONG> <STRONG>-</STRONG> <EM>begin</EM>_<EM>x</EM>. A new full-screen
- window is created by calling <STRONG>newwin(0,0,0,0)</STRONG>.
-
- Calling <STRONG>delwin</STRONG> deletes the named window, freeing all mem-
- ory 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 <STRONG>mvwin</STRONG> moves the window so that the upper left-hand
- corner is at position (<EM>x</EM>, <EM>y</EM>). 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 <STRONG>subwin</STRONG> creates and returns a pointer to a new win-
- dow with the given number of lines, <EM>nlines</EM>, and columns,
- <EM>ncols</EM>. The window is at position (<EM>begin</EM>_<EM>y</EM>, <EM>begin</EM>_<EM>x</EM>) on
- the screen. (This position is relative to the screen, and
- not to the window <EM>orig</EM>.) The window is made in the middle
- of the window <EM>orig</EM>, so that changes made to one window
- will affect both windows. The subwindow shares memory
- with the window <EM>orig</EM>. When using this routine, it is nec-
- essary to call <STRONG>touchwin</STRONG> or <STRONG>touchline</STRONG> on <EM>orig</EM> before call-
- ing <STRONG>wrefresh</STRONG> on the subwindow.
-
- Calling <STRONG>derwin</STRONG> is the same as calling <STRONG>subwin,</STRONG> except that
- <EM>begin</EM>_<EM>y</EM> and <EM>begin</EM>_<EM>x</EM> are relative to the origin of the win-
- dow <EM>orig</EM> rather than the screen. There is no difference
- between the subwindows and the derived windows.
-
- Calling <STRONG>mvderwin</STRONG> 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 <STRONG>dupwin</STRONG> creates an exact duplicate of the window
- <EM>win</EM>.
-
- Calling <STRONG>wsyncup</STRONG> touches all locations in ancestors of <EM>win</EM>
- that are changed in <EM>win</EM>. If <STRONG>syncok</STRONG> is called with second
- argument <STRONG>TRUE</STRONG> then <STRONG>wsyncup</STRONG> is called automatically when-
- ever there is a change in the window.
-
- The <STRONG>wsyncdown</STRONG> routine touches each location in <EM>win</EM> that
- has been touched in any of its ancestor windows. This
- routine is called by <STRONG>wrefresh</STRONG>, so it should almost never
- be necessary to call it manually.
-
- The routine <STRONG>wcursyncup</STRONG> updates the current cursor position
- of all the ancestors of the window to reflect the current
- cursor position of the window.
-
-
-</PRE>
-<H2>RETURN VALUE</H2><PRE>
- Routines that return an integer return the integer <STRONG>ERR</STRONG>
- upon failure and <STRONG>OK</STRONG> (SVr4 only specifies "an integer value
- other than <STRONG>ERR</STRONG>") upon successful completion.
-
- <STRONG>delwin</STRONG> returns the integer <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> upon
- successful completion.
-
- Routines that return pointers return <STRONG>NULL</STRONG> on error.
-
-
-</PRE>
-<H2>NOTES</H2><PRE>
- If many small changes are made to the window, the <STRONG>wsyncup</STRONG>
- option could degrade performance.
-
- Note that <STRONG>syncok</STRONG> may be a macro.
-
-
-</PRE>
-<H2>BUGS</H2><PRE>
- The subwindow functions (<EM>subwin</EM>, <EM>derwin</EM>, <EM>mvderwin</EM>, <STRONG>wsyn-</STRONG>
- <STRONG>cup</STRONG>, <STRONG>wsyncdown</STRONG>, <STRONG>wcursyncup</STRONG>, <STRONG>syncok</STRONG>) are flaky, incom-
- pletely implemented, and not well tested.
-
- The System V curses documentation is very unclear about
- what <STRONG>wsyncup</STRONG> and <STRONG>wsyncdown</STRONG> 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 <STRONG>curses</STRONG> implementation, is pat-
- terned on the XPG4 curses standard. The weaker XPG4 spec
- may result in slower updates.
-
-
-</PRE>
-<H2>PORTABILITY</H2><PRE>
- The XSI Curses standard, Issue 4 describes these func-
- tions.
-
-
-</PRE>
-<H2>SEE ALSO</H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>, <STRONG><A HREF="curs_touch.3x.html">curs_touch(3x)</A></STRONG>
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-<ADDRESS>
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