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29 * @Id: panel.3x,v 1.27 2019/03/23 19:23:01 tom Exp @
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41 <H1 class="no-header">panel 3x</H1>
43 <STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG> <STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG>
48 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
49 panel - panel stack extension for curses
52 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
53 <STRONG>#include</STRONG> <STRONG><panel.h></STRONG>
55 <STRONG>cc</STRONG> <STRONG>[flags]</STRONG> <STRONG>sourcefiles</STRONG> <STRONG>-lpanel</STRONG> <STRONG>-lncurses</STRONG>
57 <STRONG>PANEL</STRONG> <STRONG>*new_panel(WINDOW</STRONG> <STRONG>*win);</STRONG>
58 <STRONG>int</STRONG> <STRONG>bottom_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
59 <STRONG>int</STRONG> <STRONG>top_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
60 <STRONG>int</STRONG> <STRONG>show_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
61 <STRONG>void</STRONG> <STRONG>update_panels(void);</STRONG>
62 <STRONG>int</STRONG> <STRONG>hide_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
63 <STRONG>WINDOW</STRONG> <STRONG>*panel_window(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
64 <STRONG>int</STRONG> <STRONG>replace_panel(PANEL</STRONG> <STRONG>*pan,</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*window);</STRONG>
65 <STRONG>int</STRONG> <STRONG>move_panel(PANEL</STRONG> <STRONG>*pan,</STRONG> <STRONG>int</STRONG> <STRONG>starty,</STRONG> <STRONG>int</STRONG> <STRONG>startx);</STRONG>
66 <STRONG>int</STRONG> <STRONG>panel_hidden(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
67 <STRONG>PANEL</STRONG> <STRONG>*panel_above(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
68 <STRONG>PANEL</STRONG> <STRONG>*panel_below(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
69 <STRONG>int</STRONG> <STRONG>set_panel_userptr(PANEL</STRONG> <STRONG>*pan,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*ptr);</STRONG>
70 <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*panel_userptr(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
71 <STRONG>int</STRONG> <STRONG>del_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
74 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
75 Panels are <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG> windows with the added feature of depth. Panel
76 functions allow the use of stacked windows and ensure the proper por-
77 tions of each window and the curses <STRONG>stdscr</STRONG> window are hidden or dis-
78 played when panels are added, moved, modified or removed. The set of
79 currently visible panels is the stack of panels. The <STRONG>stdscr</STRONG> window is
80 beneath all panels, and is not considered part of the stack.
82 A window is associated with every panel. The panel routines enable you
83 to create, move, hide, and show panels, as well as position a panel at
84 any desired location in the stack.
86 Panel routines are a functional layer added to <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, make only
87 high-level curses calls, and work anywhere terminfo curses does.
90 </PRE><H2><a name="h2-FUNCTIONS">FUNCTIONS</a></H2><PRE>
91 <STRONG>new_panel(win)</STRONG>
92 allocates a <STRONG>PANEL</STRONG> structure, associates it with <STRONG>win</STRONG>, places
93 the panel on the top of the stack (causes it to be displayed
94 above any other panel) and returns a pointer to the new panel.
96 <STRONG>update_panels</STRONG>
97 refreshes the <EM>virtual</EM> <EM>screen</EM> to reflect the relations between
98 the panels in the stack, but does not call <STRONG>doupdate</STRONG> to refresh
99 the <EM>physical</EM> <EM>screen</EM>. Use this function and not <STRONG>wrefresh</STRONG> or
100 <STRONG>wnoutrefresh</STRONG>. <STRONG>update_panels</STRONG> may be called more than once before
101 a call to <STRONG>doupdate</STRONG>, but <STRONG>doupdate</STRONG> is the function responsible for
102 updating the <EM>physical</EM> <EM>screen</EM>.
104 <STRONG>del_panel(pan)</STRONG>
105 removes the given panel from the stack and deallocates the
106 <STRONG>PANEL</STRONG> structure (but not its associated window).
108 <STRONG>hide_panel(pan)</STRONG>
109 removes the given panel from the panel stack and thus hides it
110 from view. The <STRONG>PANEL</STRONG> structure is not lost, merely removed from
113 <STRONG>panel_hidden(pan)</STRONG>
114 returns <STRONG>TRUE</STRONG> if the panel is in the panel stack, <STRONG>FALSE</STRONG> if it is
115 not. If the panel is a null pointer, return <STRONG>ERR</STRONG>.
117 <STRONG>show_panel(pan)</STRONG>
118 makes a hidden panel visible by placing it on top of the panels
119 in the panel stack. See COMPATIBILITY below.
121 <STRONG>top_panel(pan)</STRONG>
122 puts the given visible panel on top of all panels in the stack.
123 See COMPATIBILITY below.
125 <STRONG>bottom_panel(pan)</STRONG>
126 puts panel at the bottom of all panels.
128 <STRONG>move_panel(pan,starty,startx)</STRONG>
129 moves the given panel window so that its upper-left corner is at
130 <STRONG>starty</STRONG>, <STRONG>startx</STRONG>. It does not change the position of the panel in
131 the stack. Be sure to use this function, not <STRONG>mvwin</STRONG>, to move a
134 <STRONG>replace_panel(pan,window)</STRONG>
135 replaces the current window of panel with <STRONG>window</STRONG> (useful, for
136 example if you want to resize a panel; if you're using <STRONG>ncurses</STRONG>,
137 you can call <STRONG>replace_panel</STRONG> on the output of <STRONG><A HREF="wresize.3x.html">wresize(3x)</A></STRONG>). It
138 does not change the position of the panel in the stack.
140 <STRONG>panel_above(pan)</STRONG>
141 returns a pointer to the panel above pan. If the panel argument
142 is <STRONG>(PANEL</STRONG> <STRONG>*)0</STRONG>, it returns a pointer to the bottom panel in the
145 <STRONG>panel_below(pan)</STRONG>
146 returns a pointer to the panel just below pan. If the panel
147 argument is <STRONG>(PANEL</STRONG> <STRONG>*)0</STRONG>, it returns a pointer to the top panel in
150 <STRONG>set_panel_userptr(pan,ptr)</STRONG>
151 sets the panel's user pointer.
153 <STRONG>panel_userptr(pan)</STRONG>
154 returns the user pointer for a given panel.
156 <STRONG>panel_window(pan)</STRONG>
157 returns a pointer to the window of the given panel.
160 </PRE><H2><a name="h2-DIAGNOSTICS">DIAGNOSTICS</a></H2><PRE>
161 Each routine that returns a pointer returns <STRONG>NULL</STRONG> if an error occurs.
162 Each routine that returns an int value returns <STRONG>OK</STRONG> if it executes suc-
163 cessfully and <STRONG>ERR</STRONG> if not.
166 </PRE><H2><a name="h2-COMPATIBILITY">COMPATIBILITY</a></H2><PRE>
167 Reasonable care has been taken to ensure compatibility with the
168 native panel facility introduced in System V (inspection of the SVr4
169 manual pages suggests the programming interface is unchanged). The
170 <STRONG>PANEL</STRONG> data structures are merely similar. The programmer is cau-
171 tioned not to directly use <STRONG>PANEL</STRONG> fields.
173 The functions <STRONG>show_panel</STRONG> and <STRONG>top_panel</STRONG> are identical in this implemen-
174 tation, and work equally well with displayed or hidden panels. In the
175 native System V implementation, <STRONG>show_panel</STRONG> is intended for making a
176 hidden panel visible (at the top of the stack) and <STRONG>top_panel</STRONG> is
177 intended for making an already-visible panel move to the top of the
178 stack. You are cautioned to use the correct function to ensure compat-
179 ibility with native panel libraries.
182 </PRE><H2><a name="h2-NOTE">NOTE</a></H2><PRE>
183 In your library list, libpanel.a should be before libncurses.a; that
184 is, you should say "-lpanel -lncurses", not the other way around (which
185 would give a link-error with static libraries).
188 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
189 The panel facility was documented in SVr4.2 in <EM>Character</EM> <EM>User</EM> <EM>Interface</EM>
190 <EM>Programming</EM> <EM>(UNIX</EM> <EM>SVR4.2)</EM>.
192 It is not part of X/Open Curses.
194 Aside from ncurses, only systems based on SVr4 source code, e.g.,
195 Solaris provide this library.
198 </PRE><H2><a name="h2-FILES">FILES</a></H2><PRE>
199 panel.h interface for the panels library
201 libpanel.a the panels library itself
204 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
205 <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>,
207 This describes <STRONG>ncurses</STRONG> version 6.1 (patch 20191130).
210 </PRE><H2><a name="h2-AUTHOR">AUTHOR</a></H2><PRE>
211 Originally written by Warren Tucker <wht@n4hgf.mt-park.ga.us>, primar-
212 ily to assist in porting u386mon to systems without a native panels
213 library. Repackaged for ncurses by Zeyd ben-Halim.
217 <STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG>
221 <li><a href="#h2-NAME">NAME</a></li>
222 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
223 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
224 <li><a href="#h2-FUNCTIONS">FUNCTIONS</a></li>
225 <li><a href="#h2-DIAGNOSTICS">DIAGNOSTICS</a></li>
226 <li><a href="#h2-COMPATIBILITY">COMPATIBILITY</a></li>
227 <li><a href="#h2-NOTE">NOTE</a></li>
228 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
229 <li><a href="#h2-FILES">FILES</a></li>
230 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
231 <li><a href="#h2-AUTHOR">AUTHOR</a></li>