ncursesw-morphos/doc/html/man/mitem_value.3x.html
Thomas E. Dickey b1f61d9f3a ncurses 5.1
2000-07-08 22:46:08 -04:00

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<H2>NAME</H2><PRE>
<B>mitem_value</B> - set and get menu item values
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<H2>SYNOPSIS</H2><PRE>
<B>#include</B> <B>&lt;menu.h&gt;</B>
int set_item_value(ITEM *item, bool value);
bool item_value(const ITEM *item);
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<H2>DESCRIPTION</H2><PRE>
If you turn off the menu option <B>O_ONEVALUE</B> (e.g., with
<B>set_menu_opts</B> or <B>menu_opts_off</B>; see <B><A HREF="menu_opts.3x.html">menu_opts(3x)</A></B>), the
menu becomes multi-valued; that is, more than one item may
simultaneously be selected.
In a multi_valued menu, you can used <B>set_item_value</B> to
select the given menu item (second argument <B>TRUE</B>) or dese-
lect it (second argument <B>FALSE</B>).
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<H2>RETURN VALUE</H2><PRE>
The function <B>set_item_value</B> returns one of the following:
<B>E_OK</B> The routine succeeded.
<B>E_SYSTEM_ERROR</B>
System error occurred (see <B>errno</B>).
<B>E_REQUEST_DENIED</B>
The menu driver could not process the request.
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<H2>SEE ALSO</H2><PRE>
<B><A HREF="ncurses.3x.html">curses(3x)</A></B>, <B><A HREF="menu.3x.html">menu(3x)</A></B>.
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<H2>NOTES</H2><PRE>
The header file <B>&lt;menu.h&gt;</B> automatically includes the header
file <B>&lt;curses.h&gt;</B>.
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<H2>PORTABILITY</H2><PRE>
These routines emulate the System V menu library. They
were not supported on Version 7 or BSD versions.
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<H2>AUTHORS</H2><PRE>
Juergen Pfeifer. Manual pages and adaptation for new
curses by Eric S. Raymond.
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