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doc/html/man/panel.3x.html
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Thomas E. Dickey
ncurses 6.4 - patch 20230311
12 мар 2023, 03:49
12 мар 2023, 03:49
87c2c84
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<!-- **************************************************************************** * Copyright 2018-2021,2022 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 * * "Software"), to deal in the Software without restriction, including * * without limitation the rights to use, copy, modify, merge, publish, * * distribute, distribute with modifications, sublicense, and/or sell * * copies of the Software, and to permit persons to whom the Software is * * furnished to do so, subject to the following conditions: * * * * The above copyright notice and this permission notice shall be included * * in all copies or substantial portions of the Software. * * * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * * * Except as contained in this notice, the name(s) of the above copyright * * holders shall not be used in advertising or otherwise to promote the * * sale, use or other dealings in this Software without prior written * * authorization. * **************************************************************************** * @Id: panel.3x,v 1.42 2022/02/12 20:03:40 tom Exp @ * --------- * --------- * --------- * --------- * --------- * --------- * --------- * --------- * --------- * --------- * --------- * --------- * --------- * --------- * --------- * --------- * --------- --> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"> <HTML> <HEAD> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="generator" content="Manpage converted by man2html - see https://invisible-island.net/scripts/readme.html#others_scripts"> <TITLE>panel 3x</TITLE> <link rel="author" href="mailto:bug-ncurses@gnu.org"> </HEAD> <BODY> <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> </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE> panel - panel stack extension for curses </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>*</STRONG><EM>win</EM><STRONG>);</STRONG> <STRONG>int</STRONG> <STRONG>bottom_panel(PANEL</STRONG> <STRONG>*</STRONG><EM>pan</EM><STRONG>);</STRONG> <STRONG>int</STRONG> <STRONG>top_panel(PANEL</STRONG> <STRONG>*</STRONG><EM>pan</EM><STRONG>);</STRONG> <STRONG>int</STRONG> <STRONG>show_panel(PANEL</STRONG> <STRONG>*</STRONG><EM>pan</EM><STRONG>);</STRONG> <STRONG>void</STRONG> <STRONG>update_panels(void);</STRONG> <STRONG>int</STRONG> <STRONG>hide_panel(PANEL</STRONG> <STRONG>*</STRONG><EM>pan</EM><STRONG>);</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*panel_window(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*</STRONG><EM>pan</EM><STRONG>);</STRONG> <STRONG>int</STRONG> <STRONG>replace_panel(PANEL</STRONG> <STRONG>*</STRONG><EM>pan</EM><STRONG>,</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>window</EM><STRONG>);</STRONG> <STRONG>int</STRONG> <STRONG>move_panel(PANEL</STRONG> <STRONG>*</STRONG><EM>pan</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>starty</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>startx</EM><STRONG>);</STRONG> <STRONG>int</STRONG> <STRONG>panel_hidden(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*</STRONG><EM>pan</EM><STRONG>);</STRONG> <STRONG>PANEL</STRONG> <STRONG>*panel_above(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*</STRONG><EM>pan</EM><STRONG>);</STRONG> <STRONG>PANEL</STRONG> <STRONG>*panel_below(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*</STRONG><EM>pan</EM><STRONG>);</STRONG> <STRONG>int</STRONG> <STRONG>set_panel_userptr(PANEL</STRONG> <STRONG>*</STRONG><EM>pan</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>ptr</EM><STRONG>);</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*panel_userptr(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*</STRONG><EM>pan</EM><STRONG>);</STRONG> <STRONG>int</STRONG> <STRONG>del_panel(PANEL</STRONG> <STRONG>*</STRONG><EM>pan</EM><STRONG>);</STRONG> /* ncurses-extensions */ <STRONG>PANEL</STRONG> <STRONG>*ground_panel(SCREEN</STRONG> <STRONG>*</STRONG><EM>sp</EM><STRONG>);</STRONG> <STRONG>PANEL</STRONG> <STRONG>*ceiling_panel(SCREEN</STRONG> <STRONG>*</STRONG><EM>sp</EM><STRONG>);</STRONG> </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 portions of each window and the curses <STRONG>stdscr</STRONG> 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 <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 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 high-level curses calls, and work anywhere terminfo curses does. </PRE><H2><a name="h2-FUNCTIONS">FUNCTIONS</a></H2><PRE> </PRE><H3><a name="h3-bottom_panel">bottom_panel</a></H3><PRE> <STRONG>bottom_panel(</STRONG><EM>pan</EM><STRONG>)</STRONG> puts panel <EM>pan</EM> at the bottom of all panels. </PRE><H3><a name="h3-ceiling_panel">ceiling_panel</a></H3><PRE> <STRONG>ceiling_panel(</STRONG><EM>sp</EM><STRONG>)</STRONG> acts like <STRONG>panel_below(NULL)</STRONG>, for the given <STRONG>SCREEN</STRONG> <EM>sp</EM>. </PRE><H3><a name="h3-del_panel">del_panel</a></H3><PRE> <STRONG>del_panel(</STRONG><EM>pan</EM><STRONG>)</STRONG> removes the given panel <EM>pan</EM> from the stack and deallocates the <STRONG>PANEL</STRONG> structure (but not its associated window). </PRE><H3><a name="h3-ground_panel">ground_panel</a></H3><PRE> <STRONG>ground_panel(</STRONG><EM>sp</EM><STRONG>)</STRONG> acts like <STRONG>panel_above(NULL)</STRONG>, for the given <STRONG>SCREEN</STRONG> <EM>sp</EM>. </PRE><H3><a name="h3-hide_panel">hide_panel</a></H3><PRE> <STRONG>hide_panel(</STRONG><EM>pan</EM><STRONG>)</STRONG> removes the given panel <EM>pan</EM> from the panel stack and thus hides it from view. The <STRONG>PANEL</STRONG> structure is not lost, merely removed from the stack. </PRE><H3><a name="h3-move_panel">move_panel</a></H3><PRE> <STRONG>move_panel(</STRONG><EM>pan</EM><STRONG>,</STRONG><EM>starty</EM><STRONG>,</STRONG><EM>startx</EM><STRONG>)</STRONG> moves the given panel <EM>pan</EM>'s window so that its upper-left corner is at <EM>starty</EM>, <EM>startx</EM>. It does not change the position of the panel in the stack. Be sure to use this function, not <STRONG><A HREF="curs_window.3x.html">mvwin(3x)</A></STRONG>, to move a panel window. </PRE><H3><a name="h3-new_panel">new_panel</a></H3><PRE> <STRONG>new_panel(</STRONG><EM>win</EM><STRONG>)</STRONG> allocates a <STRONG>PANEL</STRONG> structure, associates it with <EM>win</EM>, 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> <STRONG>panel_above(</STRONG><EM>pan</EM><STRONG>)</STRONG> returns a pointer to the panel above <EM>pan</EM>. If the panel argument is <STRONG>(PANEL</STRONG> <STRONG>*)0</STRONG>, it returns a pointer to the bottom panel in the stack. </PRE><H3><a name="h3-panel_below">panel_below</a></H3><PRE> <STRONG>panel_below(</STRONG><EM>pan</EM><STRONG>)</STRONG> returns a pointer to the panel just below <EM>pan</EM>. If the panel argument is <STRONG>(PANEL</STRONG> <STRONG>*)0</STRONG>, it returns a pointer to the top panel in the stack. </PRE><H3><a name="h3-panel_hidden">panel_hidden</a></H3><PRE> <STRONG>panel_hidden(</STRONG><EM>pan</EM><STRONG>)</STRONG> returns <STRONG>TRUE</STRONG> if the panel <EM>pan</EM> is in the panel stack, <STRONG>FALSE</STRONG> if it is not. If the panel is a null pointer, return <STRONG>ERR</STRONG>. </PRE><H3><a name="h3-panel_userptr">panel_userptr</a></H3><PRE> <STRONG>panel_userptr(</STRONG><EM>pan</EM><STRONG>)</STRONG> returns the user pointer for a given panel <EM>pan</EM>. </PRE><H3><a name="h3-panel_window">panel_window</a></H3><PRE> <STRONG>panel_window(</STRONG><EM>pan</EM><STRONG>)</STRONG> returns a pointer to the window of the given panel <EM>pan</EM>. </PRE><H3><a name="h3-replace_panel">replace_panel</a></H3><PRE> <STRONG>replace_panel(</STRONG><EM>pan</EM><STRONG>,</STRONG><EM>window</EM><STRONG>)</STRONG> replaces the current window of panel <EM>pan</EM> with <EM>window</EM> This is useful, for example if you want to resize a panel. In <STRONG>ncurses</STRONG>, you can call <STRONG>replace_panel</STRONG> to resize a panel using a window resized with <STRONG><A HREF="wresize.3x.html">wresize(3x)</A></STRONG>. 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> <STRONG>set_panel_userptr(</STRONG><EM>pan</EM><STRONG>,</STRONG><EM>ptr</EM><STRONG>)</STRONG> sets the panel's user pointer. </PRE><H3><a name="h3-show_panel">show_panel</a></H3><PRE> <STRONG>show_panel(</STRONG><EM>pan</EM><STRONG>)</STRONG> makes a hidden panel visible by placing it on top of the panels in the panel stack. See <STRONG>COMPATIBILITY</STRONG> below. </PRE><H3><a name="h3-top_panel">top_panel</a></H3><PRE> <STRONG>top_panel(</STRONG><EM>pan</EM><STRONG>)</STRONG> puts the given visible panel <EM>pan</EM> on top of all panels in the stack. See <STRONG>COMPATIBILITY</STRONG> below. </PRE><H3><a name="h3-update_panels">update_panels</a></H3><PRE> <STRONG>update_panels()</STRONG> refreshes the <EM>virtual</EM> <EM>screen</EM> to reflect the relations between the panels in the stack, but does not call <STRONG><A HREF="curs_refresh.3x.html">doupdate(3x)</A></STRONG> to refresh the <EM>physical</EM> <EM>screen</EM>. Use this function and not <STRONG><A HREF="curs_refresh.3x.html">wrefresh(3x)</A></STRONG> or <STRONG><A HREF="curs_refresh.3x.html">wnoutrefresh(3x)</A></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 <EM>physical</EM> <EM>screen</EM>. </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 successfully and <STRONG>ERR</STRONG> if not. Except as noted, the <EM>pan</EM> and <EM>window</EM> parameters must be non-null. If those are null, an error is returned. The <STRONG>move_panel</STRONG> function uses <STRONG><A HREF="curs_window.3x.html">mvwin(3x)</A></STRONG>, and will return an error if <STRONG>mvwin</STRONG> 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 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. The functions <STRONG>show_panel</STRONG> and <STRONG>top_panel</STRONG> are identical in this implementation, 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 compatibility with native panel libraries. </PRE><H2><a name="h2-NOTE">NOTE</a></H2><PRE> In your library list, libpanel.a should be before libncurses.a; that is, you should say "-lpanel -lncurses", not the other way around (which 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 <EM>Character</EM> <EM>User</EM> <EM>Interface</EM> <EM>Programming</EM> <EM>(UNIX</EM> <EM>SVR4.2)</EM>. It is not part of X/Open Curses. A few implementations exist: <STRONG>o</STRONG> Systems based on SVr4 source code, e.g., Solaris, provide this library. <STRONG>o</STRONG> <STRONG>ncurses</STRONG> (since version 0.6 in 1993) and <STRONG>PDCurses</STRONG> (since version 2.2 in 1995) provide a panel library whose common ancestor was a public domain implementation by Warren Tucker published in <EM>u386mon</EM> 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. <STRONG>o</STRONG> 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 libpanel.a the panels library itself </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>, This describes <STRONG>ncurses</STRONG> version 6.4 (patch 20230311). </PRE><H2><a name="h2-AUTHOR">AUTHOR</a></H2><PRE> Originally written by Warren Tucker <wht@n4hgf.mt-park.ga.us>, primarily to assist in porting <EM>u386mon</EM> 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> </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> <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> </ul> </div> </BODY> </HTML>