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* @Id: panel.3x,v 1.11 2003/05/17 22:44:09 jmc Exp @
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<TITLE>panel 3x</TITLE>
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<H1>panel 3x</H1>
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<PRE>
<!-- Manpage converted by man2html 3.0.1 -->
<STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG> <STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG>
</PRE>
<H2>NAME</H2><PRE>
panel - panel stack extension for curses
</PRE>
<H2>SYNOPSIS</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>
</PRE>
<H2>DESCRIPTION</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 cur-
rently 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 rou-
tines 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 ter-
minfo curses does.
</PRE>
<H2>FUNCTIONS</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>void</STRONG> <STRONG>update_panels()</STRONG>
refreshes the virtual screen to reflect the rela-
tions between the panels in the stack, but does not
call doupdate() to refresh the physical screen.
Use this function and not wrefresh or wnoutrefresh.
update_panels() may be called more than once before
a call to doupdate(), but doupdate() is the func-
tion responsible for updating the physical screen.
<STRONG>del_panel(pan)</STRONG>
removes the given panel from the stack and deallo-
cates 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>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>
<H2>DIAGNOSTICS</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.
</PRE>
<H2>COMPATIBILITY</H2><PRE>
Reasonable care has been taken to ensure compatibility
with the native panel facility introduced in SVr3.2
(inspection of the SVr4 manual pages suggests the program-
ming 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 dis-
played or hidden panels. In the native System V implemen-
tation, <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>NOTE</H2><PRE>
In your library list, libpanel.a should be before libn-
curses.a; that is, you want to say `-lpanel -lncurses',
not the other way around (which would give you a link
error using GNU <STRONG><A HREF="ld.1.html">ld(1)</A></STRONG> and some other linkers).
</PRE>
<H2>FILES</H2><PRE>
panel.h interface for the panels library
libpanel.a the panels library itself
</PRE>
<H2>SEE ALSO</H2><PRE>
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>
</PRE>
<H2>AUTHOR</H2><PRE>
Originally written by Warren Tucker <wht@n4hgf.mt-
park.ga.us>, primarily to assist in porting u386mon to
systems without a native panels library. Repackaged for
ncurses by Zeyd ben-Halim.
<STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG>
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