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30 * @Id: panel.3x,v 1.11 2003/05/17 22:44:09 jmc Exp @
34 <TITLE>panel 3x</TITLE>
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43 <STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG> <STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG>
50 panel - panel stack extension for curses
54 <H2>SYNOPSIS</H2><PRE>
55 <STRONG>#include</STRONG> <STRONG><panel.h></STRONG>
57 <STRONG>cc</STRONG> <STRONG>[flags]</STRONG> <STRONG>sourcefiles</STRONG> <STRONG>-lpanel</STRONG> <STRONG>-lncurses</STRONG>
59 <STRONG>PANEL</STRONG> <STRONG>*new_panel(WINDOW</STRONG> <STRONG>*win)</STRONG>
60 <STRONG>int</STRONG> <STRONG>bottom_panel(PANEL</STRONG> <STRONG>*pan)</STRONG>
61 <STRONG>int</STRONG> <STRONG>top_panel(PANEL</STRONG> <STRONG>*pan)</STRONG>
62 <STRONG>int</STRONG> <STRONG>show_panel(PANEL</STRONG> <STRONG>*pan)</STRONG>
63 <STRONG>void</STRONG> <STRONG>update_panels();</STRONG>
64 <STRONG>int</STRONG> <STRONG>hide_panel(PANEL</STRONG> <STRONG>*pan)</STRONG>
65 <STRONG>WINDOW</STRONG> <STRONG>*panel_window(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan)</STRONG>
66 <STRONG>int</STRONG> <STRONG>replace_panel(PANEL</STRONG> <STRONG>*pan,</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*window)</STRONG>
67 <STRONG>int</STRONG> <STRONG>move_panel(PANEL</STRONG> <STRONG>*pan,</STRONG> <STRONG>int</STRONG> <STRONG>starty,</STRONG> <STRONG>int</STRONG> <STRONG>startx)</STRONG>
68 <STRONG>int</STRONG> <STRONG>panel_hidden(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan)</STRONG>
69 <STRONG>PANEL</STRONG> <STRONG>*panel_above(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan)</STRONG>
70 <STRONG>PANEL</STRONG> <STRONG>*panel_below(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan)</STRONG>
71 <STRONG>int</STRONG> <STRONG>set_panel_userptr(PANEL</STRONG> <STRONG>*pan,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*ptr)</STRONG>
72 <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*panel_userptr(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan)</STRONG>
73 <STRONG>int</STRONG> <STRONG>del_panel(PANEL</STRONG> <STRONG>*pan)</STRONG>
77 <H2>DESCRIPTION</H2><PRE>
78 Panels are <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG> windows with the added feature of
79 depth. Panel functions allow the use of stacked windows
80 and ensure the proper portions of each window and the
81 curses <STRONG>stdscr</STRONG> window are hidden or displayed when panels
82 are added, moved, modified or removed. The set of cur-
83 rently visible panels is the stack of panels. The <STRONG>stdscr</STRONG>
84 window is beneath all panels, and is not considered part
87 A window is associated with every panel. The panel rou-
88 tines enable you to create, move, hide, and show panels,
89 as well as position a panel at any desired location in the
92 Panel routines are a functional layer added to <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>,
93 make only high-level curses calls, and work anywhere ter-
98 <H2>FUNCTIONS</H2><PRE>
99 <STRONG>new_panel(win)</STRONG>
100 allocates a <STRONG>PANEL</STRONG> structure, associates it with
101 <STRONG>win</STRONG>, places the panel on the top of the stack
102 (causes it to be displayed above any other
103 panel) and returns a pointer to the new panel.
105 <STRONG>void</STRONG> <STRONG>update_panels()</STRONG>
106 refreshes the virtual screen to reflect the rela-
107 tions between the panels in the stack, but does not
108 call doupdate() to refresh the physical screen.
109 Use this function and not wrefresh or wnoutrefresh.
110 update_panels() may be called more than once before
111 a call to doupdate(), but doupdate() is the func-
112 tion responsible for updating the physical screen.
114 <STRONG>del_panel(pan)</STRONG>
115 removes the given panel from the stack and deallo-
116 cates the <STRONG>PANEL</STRONG> structure (but not its associated
119 <STRONG>hide_panel(pan)</STRONG>
120 removes the given panel from the panel stack and
121 thus hides it from view. The <STRONG>PANEL</STRONG> structure is not
122 lost, merely removed from the stack.
124 <STRONG>show_panel(pan)</STRONG>
125 makes a hidden panel visible by placing it on top
126 of the panels in the panel stack. See COMPATIBILITY
129 <STRONG>top_panel(pan)</STRONG>
130 puts the given visible panel on top of all panels
131 in the stack. See COMPATIBILITY below.
133 <STRONG>bottom_panel(pan)</STRONG>
134 puts panel at the bottom of all panels.
136 <STRONG>move_panel(pan,starty,startx)</STRONG>
137 moves the given panel window so that its upper-left
138 corner is at <STRONG>starty</STRONG>, <STRONG>startx</STRONG>. It does not change
139 the position of the panel in the stack. Be sure to
140 use this function, not <STRONG>mvwin()</STRONG>, to move a panel
143 <STRONG>replace_panel(pan,window)</STRONG>
144 replaces the current window of panel with <STRONG>window</STRONG>
145 (useful, for example if you want to resize a panel;
146 if you're using <STRONG>ncurses</STRONG>, you can call <STRONG>replace_panel</STRONG>
147 on the output of <STRONG><A HREF="wresize.3x.html">wresize(3x)</A></STRONG>). It does not change
148 the position of the panel in the stack.
150 <STRONG>panel_above(pan)</STRONG>
151 returns a pointer to the panel above pan. If the
152 panel argument is <STRONG>(PANEL</STRONG> <STRONG>*)0</STRONG>, it returns a pointer
153 to the bottom panel in the stack.
155 <STRONG>panel_below(pan)</STRONG>
156 returns a pointer to the panel just below pan. If
157 the panel argument is <STRONG>(PANEL</STRONG> <STRONG>*)0</STRONG>, it returns a
158 pointer to the top panel in the stack.
160 <STRONG>set_panel_userptr(pan,ptr)</STRONG>
161 sets the panel's user pointer.
163 <STRONG>panel_userptr(pan)</STRONG>
164 returns the user pointer for a given panel.
166 <STRONG>panel_window(pan)</STRONG>
167 returns a pointer to the window of the given panel.
171 <H2>DIAGNOSTICS</H2><PRE>
172 Each routine that returns a pointer returns <STRONG>NULL</STRONG> if an
173 error occurs. Each routine that returns an int value
174 returns <STRONG>OK</STRONG> if it executes successfully and <STRONG>ERR</STRONG> if not.
178 <H2>COMPATIBILITY</H2><PRE>
179 Reasonable care has been taken to ensure compatibility
180 with the native panel facility introduced in SVr3.2
181 (inspection of the SVr4 manual pages suggests the program-
182 ming interface is unchanged). The <STRONG>PANEL</STRONG> data structures
183 are merely similar. The programmer is cautioned not to
184 directly use <STRONG>PANEL</STRONG> fields.
186 The functions <STRONG>show_panel()</STRONG> and <STRONG>top_panel()</STRONG> are identical
187 in this implementation, and work equally well with dis-
188 played or hidden panels. In the native System V implemen-
189 tation, <STRONG>show_panel()</STRONG> is intended for making a hidden panel
190 visible (at the top of the stack) and <STRONG>top_panel()</STRONG> is
191 intended for making an already-visible panel move to the
192 top of the stack. You are cautioned to use the correct
193 function to ensure compatibility with native panel
199 In your library list, libpanel.a should be before libn-
200 curses.a; that is, you want to say `-lpanel -lncurses',
201 not the other way around (which would give you a link
202 error using GNU <STRONG><A HREF="ld.1.html">ld(1)</A></STRONG> and some other linkers).
207 panel.h interface for the panels library
209 libpanel.a the panels library itself
213 <H2>SEE ALSO</H2><PRE>
214 <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>
219 Originally written by Warren Tucker <wht@n4hgf.mt-
220 park.ga.us>, primarily to assist in porting u386mon to
221 systems without a native panels library. Repackaged for
222 ncurses by Zeyd ben-Halim.
226 <STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG>
230 Man(1) output converted with
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