-<!--
+<!--
****************************************************************************
- * Copyright (c) 1998-2016,2017 Free Software Foundation, Inc. *
+ * Copyright 2018-2019,2020 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 *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************
- * @Id: panel.3x,v 1.21 2017/02/18 16:53:23 tom Exp @
+ * @Id: panel.3x,v 1.39 2020/02/15 21:06:40 tom Exp @
+ * ---------
+ * ---------
+ * ---------
+ * ---------
+ * ---------
+ * ---------
+ * ---------
+ * ---------
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-<H1 class="no-header">panel 3x</H1>
+<H1 class="no-header">panel 3X</H1>
<PRE>
-<STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG> <STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG>
+<B><A HREF="panel.3X.html">panel(3X)</A></B> <B><A HREF="panel.3X.html">panel(3X)</A></B>
</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
- <STRONG>#include</STRONG> <STRONG><panel.h></STRONG>
-
- <STRONG>cc</STRONG> <STRONG>[flags]</STRONG> <STRONG>sourcefiles</STRONG> <STRONG>-lpanel</STRONG> <STRONG>-lncurses</STRONG>
-
- <STRONG>PANEL</STRONG> <STRONG>*new_panel(WINDOW</STRONG> <STRONG>*win);</STRONG>
- <STRONG>int</STRONG> <STRONG>bottom_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
- <STRONG>int</STRONG> <STRONG>top_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
- <STRONG>int</STRONG> <STRONG>show_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
- <STRONG>void</STRONG> <STRONG>update_panels();</STRONG>
- <STRONG>int</STRONG> <STRONG>hide_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
- <STRONG>WINDOW</STRONG> <STRONG>*panel_window(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
- <STRONG>int</STRONG> <STRONG>replace_panel(PANEL</STRONG> <STRONG>*pan,</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*window);</STRONG>
- <STRONG>int</STRONG> <STRONG>move_panel(PANEL</STRONG> <STRONG>*pan,</STRONG> <STRONG>int</STRONG> <STRONG>starty,</STRONG> <STRONG>int</STRONG> <STRONG>startx);</STRONG>
- <STRONG>int</STRONG> <STRONG>panel_hidden(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
- <STRONG>PANEL</STRONG> <STRONG>*panel_above(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
- <STRONG>PANEL</STRONG> <STRONG>*panel_below(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
- <STRONG>int</STRONG> <STRONG>set_panel_userptr(PANEL</STRONG> <STRONG>*pan,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*ptr);</STRONG>
- <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*panel_userptr(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
- <STRONG>int</STRONG> <STRONG>del_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
+ <B>#include</B> <B><panel.h></B>
+
+ <B>cc</B> <B>[flags]</B> <B>sourcefiles</B> <B>-lpanel</B> <B>-lncurses</B>
+
+ <B>PANEL</B> <B>*new_panel(WINDOW</B> <B>*</B><I>win</I><B>);</B>
+
+ <B>int</B> <B>bottom_panel(PANEL</B> <B>*</B><I>pan</I><B>);</B>
+ <B>int</B> <B>top_panel(PANEL</B> <B>*</B><I>pan</I><B>);</B>
+ <B>int</B> <B>show_panel(PANEL</B> <B>*</B><I>pan</I><B>);</B>
+ <B>void</B> <B>update_panels(void);</B>
+ <B>int</B> <B>hide_panel(PANEL</B> <B>*</B><I>pan</I><B>);</B>
+
+ <B>WINDOW</B> <B>*panel_window(const</B> <B>PANEL</B> <B>*</B><I>pan</I><B>);</B>
+ <B>int</B> <B>replace_panel(PANEL</B> <B>*</B><I>pan</I><B>,</B> <B>WINDOW</B> <B>*</B><I>window</I><B>);</B>
+ <B>int</B> <B>move_panel(PANEL</B> <B>*</B><I>pan</I><B>,</B> <B>int</B> <I>starty</I><B>,</B> <B>int</B> <I>startx</I><B>);</B>
+ <B>int</B> <B>panel_hidden(const</B> <B>PANEL</B> <B>*</B><I>pan</I><B>);</B>
+
+ <B>PANEL</B> <B>*panel_above(const</B> <B>PANEL</B> <B>*</B><I>pan</I><B>);</B>
+ <B>PANEL</B> <B>*panel_below(const</B> <B>PANEL</B> <B>*</B><I>pan</I><B>);</B>
+
+ <B>int</B> <B>set_panel_userptr(PANEL</B> <B>*</B><I>pan</I><B>,</B> <B>const</B> <B>void</B> <B>*</B><I>ptr</I><B>);</B>
+ <B>const</B> <B>void</B> <B>*panel_userptr(const</B> <B>PANEL</B> <B>*</B><I>pan</I><B>);</B>
+
+ <B>int</B> <B>del_panel(PANEL</B> <B>*</B><I>pan</I><B>);</B>
+
+ /* ncurses-extensions */
+ <B>PANEL</B> <B>*ground_panel(SCREEN</B> <B>*</B><I>sp</I><B>);</B>
+ <B>PANEL</B> <B>*ceiling_panel(SCREEN</B> <B>*</B><I>sp</I><B>);</B>
</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
- Panels are <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG> windows with the added feature of depth. Panel
- functions allow the use of stacked windows and ensure the proper por-
- tions of each window and the curses <STRONG>stdscr</STRONG> window are hidden or dis-
- played when panels are added, moved, modified or removed. The set of
- currently visible panels is the stack of panels. The <STRONG>stdscr</STRONG> window is
- beneath all panels, and is not considered part of the stack.
-
- A window is associated with every panel. The panel routines enable you
+ Panels are <B><A HREF="curses.3X.html">curses(3X)</A></B> windows with the added feature of depth. Panel
+ functions allow the use of stacked windows and ensure the proper
+ portions of each window and the curses <B>stdscr</B> window are hidden or
+ displayed when panels are added, moved, modified or removed. The set
+ of currently visible panels is the stack of panels. The <B>stdscr</B> window
+ is beneath all panels, and is not considered part of the stack.
+
+ A window is associated with every panel. The panel routines enable you
to create, move, hide, and show panels, as well as position a panel at
any desired location in the stack.
- Panel routines are a functional layer added to <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, make only
+ Panel routines are a functional layer added to <B><A HREF="curses.3X.html">curses(3X)</A></B>, make only
high-level curses calls, and work anywhere terminfo curses does.
</PRE><H2><a name="h2-FUNCTIONS">FUNCTIONS</a></H2><PRE>
- <STRONG>new_panel(win)</STRONG>
- allocates a <STRONG>PANEL</STRONG> structure, associates it with <STRONG>win</STRONG>, places
- the panel on the top of the stack (causes it to be displayed
- above any other panel) and returns a pointer to the new panel.
-
- <STRONG>update_panels</STRONG>
- refreshes the virtual screen to reflect the relations between
- the panels in the stack, but does not call <STRONG>doupdate</STRONG> to refresh
- the physical screen. Use this function and not <STRONG>wrefresh</STRONG> or
- <STRONG>wnoutrefresh</STRONG>. <STRONG>update_panels</STRONG> may be called more than once before
- a call to <STRONG>doupdate</STRONG>, but <STRONG>doupdate</STRONG> is the function responsible for
- updating the physical screen.
-
- <STRONG>del_panel(pan)</STRONG>
- removes the given panel from the stack and deallocates the
- <STRONG>PANEL</STRONG> structure (but not its associated window).
-
- <STRONG>hide_panel(pan)</STRONG>
- removes the given panel from the panel stack and thus hides it
- from view. The <STRONG>PANEL</STRONG> structure is not lost, merely removed from
- the stack.
-
- <STRONG>panel_hidden(pan)</STRONG>
- returns <STRONG>TRUE</STRONG> if the panel is in the panel stack, <STRONG>FALSE</STRONG> if it is
- not. If the panel is a null pointer, return ERR.
-
- <STRONG>show_panel(pan)</STRONG>
- makes a hidden panel visible by placing it on top of the panels
- in the panel stack. See COMPATIBILITY below.
-
- <STRONG>top_panel(pan)</STRONG>
- puts the given visible panel on top of all panels in the stack.
- See COMPATIBILITY below.
-
- <STRONG>bottom_panel(pan)</STRONG>
- puts panel at the bottom of all panels.
-
- <STRONG>move_panel(pan,starty,startx)</STRONG>
- moves the given panel window so that its upper-left corner is at
- <STRONG>starty</STRONG>, <STRONG>startx</STRONG>. It does not change the position of the panel in
- the stack. Be sure to use this function, not <STRONG>mvwin</STRONG>, to move a
- panel window.
-
- <STRONG>replace_panel(pan,window)</STRONG>
- replaces the current window of panel with <STRONG>window</STRONG> (useful, for
- example if you want to resize a panel; if you're using <STRONG>ncurses</STRONG>,
- you can call <STRONG>replace_panel</STRONG> on the output of <STRONG><A HREF="wresize.3x.html">wresize(3x)</A></STRONG>). It
- does not change the position of the panel in the stack.
-
- <STRONG>panel_above(pan)</STRONG>
- returns a pointer to the panel above pan. If the panel argument
- is <STRONG>(PANEL</STRONG> <STRONG>*)0</STRONG>, it returns a pointer to the bottom panel in the
- stack.
-
- <STRONG>panel_below(pan)</STRONG>
- returns a pointer to the panel just below pan. If the panel
- argument is <STRONG>(PANEL</STRONG> <STRONG>*)0</STRONG>, it returns a pointer to the top panel in
- the stack.
-
- <STRONG>set_panel_userptr(pan,ptr)</STRONG>
- sets the panel's user pointer.
-
- <STRONG>panel_userptr(pan)</STRONG>
- returns the user pointer for a given panel.
-
- <STRONG>panel_window(pan)</STRONG>
- returns a pointer to the window of the given panel.
+
+</PRE><H3><a name="h3-bottom_panel">bottom_panel</a></H3><PRE>
+ <B>bottom_panel(</B><I>pan</I><B>)</B> puts panel <I>pan</I> at the bottom of all panels.
+
+
+</PRE><H3><a name="h3-ceiling_panel">ceiling_panel</a></H3><PRE>
+ <B>ceiling_panel(</B><I>sp</I><B>)</B> acts like <B>panel_below(NULL)</B>, for the given <B>SCREEN</B> <I>sp</I>.
+
+
+</PRE><H3><a name="h3-del_panel">del_panel</a></H3><PRE>
+ <B>del_panel(</B><I>pan</I><B>)</B> removes the given panel <I>pan</I> from the stack and
+ deallocates the <B>PANEL</B> structure (but not its associated window).
+
+
+</PRE><H3><a name="h3-ground_panel">ground_panel</a></H3><PRE>
+ <B>ground_panel(</B><I>sp</I><B>)</B> acts like <B>panel_above(NULL)</B>, for the given <B>SCREEN</B> <I>sp</I>.
+
+
+</PRE><H3><a name="h3-hide_panel">hide_panel</a></H3><PRE>
+ <B>hide_panel(</B><I>pan</I><B>)</B> removes the given panel <I>pan</I> from the panel stack and
+ thus hides it from view. The <B>PANEL</B> structure is not lost, merely
+ removed from the stack.
+
+
+</PRE><H3><a name="h3-move_panel">move_panel</a></H3><PRE>
+ <B>move_panel(</B><I>pan</I><B>,</B><I>starty</I><B>,</B><I>startx</I><B>)</B> moves the given panel <I>pan</I>'s window so
+ that its upper-left corner is at <I>starty</I>, <I>startx</I>. It does not change
+ the position of the panel in the stack. Be sure to use this function,
+ not <B><A HREF="curs_window.3X.html">mvwin(3X)</A></B>, to move a panel window.
+
+
+</PRE><H3><a name="h3-new_panel">new_panel</a></H3><PRE>
+ <B>new_panel(</B><I>win</I><B>)</B> allocates a <B>PANEL</B> structure, associates it with <I>win</I>,
+ places the panel on the top of the stack (causes it to be displayed
+ above any other panel) and returns a pointer to the new panel.
+
+
+</PRE><H3><a name="h3-panel_above">panel_above</a></H3><PRE>
+ <B>panel_above(</B><I>pan</I><B>)</B> returns a pointer to the panel above <I>pan</I>. If the
+ panel argument is <B>(PANEL</B> <B>*)0</B>, it returns a pointer to the bottom panel
+ in the stack.
+
+
+</PRE><H3><a name="h3-panel_below">panel_below</a></H3><PRE>
+ <B>panel_below(</B><I>pan</I><B>)</B> returns a pointer to the panel just below <I>pan</I>. If the
+ panel argument is <B>(PANEL</B> <B>*)0</B>, it returns a pointer to the top panel in
+ the stack.
+
+
+</PRE><H3><a name="h3-panel_hidden">panel_hidden</a></H3><PRE>
+ <B>panel_hidden(</B><I>pan</I><B>)</B> returns <B>TRUE</B> if the panel <I>pan</I> is in the panel stack,
+ <B>FALSE</B> if it is not. If the panel is a null pointer, return <B>ERR</B>.
+
+
+</PRE><H3><a name="h3-panel_userptr">panel_userptr</a></H3><PRE>
+ <B>panel_userptr(</B><I>pan</I><B>)</B> returns the user pointer for a given panel <I>pan</I>.
+
+
+</PRE><H3><a name="h3-panel_window">panel_window</a></H3><PRE>
+ <B>panel_window(</B><I>pan</I><B>)</B> returns a pointer to the window of the given panel
+ <I>pan</I>.
+
+
+</PRE><H3><a name="h3-replace_panel">replace_panel</a></H3><PRE>
+ <B>replace_panel(</B><I>pan</I><B>,</B><I>window</I><B>)</B> replaces the current window of panel <I>pan</I> with
+ <I>window</I> This is useful, for example if you want to resize a panel. In
+ <B>ncurses</B>, you can call <B>replace_panel</B> to resize a panel using a window
+ resized with <B><A HREF="wresize.3X.html">wresize(3X)</A></B>. It does not change the position of the panel
+ in the stack.
+
+
+</PRE><H3><a name="h3-set_panel_userptr">set_panel_userptr</a></H3><PRE>
+ <B>set_panel_userptr(</B><I>pan</I><B>,</B><I>ptr</I><B>)</B> sets the panel's user pointer.
+
+
+</PRE><H3><a name="h3-show_panel">show_panel</a></H3><PRE>
+ <B>show_panel(</B><I>pan</I><B>)</B> makes a hidden panel visible by placing it on top of
+ the panels in the panel stack. See <B>COMPATIBILITY</B> below.
+
+
+</PRE><H3><a name="h3-top_panel">top_panel</a></H3><PRE>
+ <B>top_panel(</B><I>pan</I><B>)</B> puts the given visible panel <I>pan</I> on top of all panels in
+ the stack. See <B>COMPATIBILITY</B> below.
+
+
+</PRE><H3><a name="h3-update_panels">update_panels</a></H3><PRE>
+ <B>update_panels()</B> refreshes the <I>virtual</I> <I>screen</I> to reflect the relations
+ between the panels in the stack, but does not call <B><A HREF="curs_refresh.3X.html">doupdate(3X)</A></B> to
+ refresh the <I>physical</I> <I>screen</I>. Use this function and not <B><A HREF="curs_refresh.3X.html">wrefresh(3X)</A></B> or
+ <B><A HREF="curs_refresh.3X.html">wnoutrefresh(3X)</A></B>.
+
+ <B>update_panels</B> may be called more than once before a call to <B>doupdate</B>,
+ but <B>doupdate</B> is the function responsible for updating the <I>physical</I>
+ <I>screen</I>.
</PRE><H2><a name="h2-DIAGNOSTICS">DIAGNOSTICS</a></H2><PRE>
- Each routine that returns a pointer returns <STRONG>NULL</STRONG> if an error occurs.
- Each routine that returns an int value returns <STRONG>OK</STRONG> if it executes suc-
- cessfully and <STRONG>ERR</STRONG> if not.
+ Each routine that returns a pointer returns <B>NULL</B> if an error occurs.
+ Each routine that returns an int value returns <B>OK</B> if it executes
+ successfully and <B>ERR</B> if not.
+
+ Except as noted, the <I>pan</I> and <I>window</I> parameters must be non-null. If
+ those are null, an error is returned.
+
+ The <B>move_panel</B> function uses <B><A HREF="curs_window.3X.html">mvwin(3X)</A></B>, and will return an error if
+ <B>mvwin</B> returns an error.
</PRE><H2><a name="h2-COMPATIBILITY">COMPATIBILITY</a></H2><PRE>
Reasonable care has been taken to ensure compatibility with the
- native panel facility introduced in SVr3.2 (inspection of the SVr4
+ native panel facility introduced in System V (inspection of the SVr4
manual pages suggests the programming interface is unchanged). The
- <STRONG>PANEL</STRONG> data structures are merely similar. The programmer is cautioned
- not to directly use <STRONG>PANEL</STRONG> fields.
+ <B>PANEL</B> data structures are merely similar. The programmer is
+ cautioned not to directly use <B>PANEL</B> fields.
- The functions <STRONG>show_panel</STRONG> and <STRONG>top_panel</STRONG> are identical in this implemen-
- tation, and work equally well with displayed or hidden panels. In the
- native System V implementation, <STRONG>show_panel</STRONG> is intended for making a
- hidden panel visible (at the top of the stack) and <STRONG>top_panel</STRONG> is
- intended for making an already-visible panel move to the top of the
- stack. You are cautioned to use the correct function to ensure compati-
- bility with native panel libraries.
+ The functions <B>show_panel</B> and <B>top_panel</B> are identical in this
+ implementation, and work equally well with displayed or hidden panels.
+ In the native System V implementation, <B>show_panel</B> is intended for
+ making a hidden panel visible (at the top of the stack) and <B>top_panel</B>
+ is intended for making an already-visible panel move to the top of the
+ stack. You are cautioned to use the correct function to ensure
+ compatibility with native panel libraries.
</PRE><H2><a name="h2-NOTE">NOTE</a></H2><PRE>
would give a link-error with static libraries).
+</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
+ The panel facility was documented in SVr4.2 in <I>Character</I> <I>User</I> <I>Interface</I>
+ <I>Programming</I> <I>(UNIX</I> <I>SVR4.2)</I>.
+
+ It is not part of X/Open Curses.
+
+ A few implementations exist:
+
+ <B>o</B> Systems based on SVr4 source code, e.g., Solaris, provide this
+ library.
+
+ <B>o</B> <B>ncurses</B> (since version 0.6 in 1993) and <B>PDCurses</B> (since version 2.2
+ in 1995) provide a panel library whose common ancestor was a public
+ domain implementation by Warren Tucker published in <I>u386mon</I> 2.20
+ (1990).
+
+ According to Tucker, the SystemV panel library was first released
+ in SVr3.2 (1988), and his implementation helped with a port to
+ SVr3.1 (1987).
+
+ Several developers have improved each of these; they are no longer
+ the same as Tucker's implementation.
+
+ <B>o</B> NetBSD 8 (2018) has a panel library begun by Valery Ushakov in
+ 2015. This is based on the AT&T documentation.
+
+
</PRE><H2><a name="h2-FILES">FILES</a></H2><PRE>
panel.h interface for the panels library
</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_variables.3x.html">curs_variables(3x)</A></STRONG>,
+ <B><A HREF="curses.3X.html">curses(3X)</A></B>, <B><A HREF="curs_variables.3X.html">curs_variables(3X)</A></B>,
- This describes <STRONG>ncurses</STRONG> version 6.0 (patch 20170506).
+ This describes <B>ncurses</B> version 6.2 (patch 20210612).
</PRE><H2><a name="h2-AUTHOR">AUTHOR</a></H2><PRE>
- Originally written by Warren Tucker <wht@n4hgf.mt-park.ga.us>, primar-
- ily to assist in porting u386mon to systems without a native panels
- library. Repackaged for ncurses by Zeyd ben-Halim.
+ Originally written by Warren Tucker <wht@n4hgf.mt-park.ga.us>,
+ primarily to assist in porting <I>u386mon</I> to systems without a native
+ panels library.
+
+ Repackaged for ncurses by Zeyd ben-Halim.
+ Juergen Pfeifer and Thomas E. Dickey revised/improved the library.
- <STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG>
+
+ <B><A HREF="panel.3X.html">panel(3X)</A></B>
</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></li>
-<li><a href="#h2-FUNCTIONS">FUNCTIONS</a></li>
+<li><a href="#h2-FUNCTIONS">FUNCTIONS</a>
+<ul>
+<li><a href="#h3-bottom_panel">bottom_panel</a></li>
+<li><a href="#h3-ceiling_panel">ceiling_panel</a></li>
+<li><a href="#h3-del_panel">del_panel</a></li>
+<li><a href="#h3-ground_panel">ground_panel</a></li>
+<li><a href="#h3-hide_panel">hide_panel</a></li>
+<li><a href="#h3-move_panel">move_panel</a></li>
+<li><a href="#h3-new_panel">new_panel</a></li>
+<li><a href="#h3-panel_above">panel_above</a></li>
+<li><a href="#h3-panel_below">panel_below</a></li>
+<li><a href="#h3-panel_hidden">panel_hidden</a></li>
+<li><a href="#h3-panel_userptr">panel_userptr</a></li>
+<li><a href="#h3-panel_window">panel_window</a></li>
+<li><a href="#h3-replace_panel">replace_panel</a></li>
+<li><a href="#h3-set_panel_userptr">set_panel_userptr</a></li>
+<li><a href="#h3-show_panel">show_panel</a></li>
+<li><a href="#h3-top_panel">top_panel</a></li>
+<li><a href="#h3-update_panels">update_panels</a></li>
+</ul>
+</li>
<li><a href="#h2-DIAGNOSTICS">DIAGNOSTICS</a></li>
<li><a href="#h2-COMPATIBILITY">COMPATIBILITY</a></li>
<li><a href="#h2-NOTE">NOTE</a></li>
+<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
<li><a href="#h2-FILES">FILES</a></li>
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
<li><a href="#h2-AUTHOR">AUTHOR</a></li>