1997-05-15 12:00:00 +08:00
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<HTML>
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1999-10-24 12:32:42 +08:00
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<BODY>
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1997-05-15 12:00:00 +08:00
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<PRE>
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<STRONG>menu_win</STRONG> - make and break menu window and subwindow asso-
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ciations
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</PRE>
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<H2>SYNOPSIS</H2><PRE>
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1999-10-24 12:32:42 +08:00
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<STRONG>#include</STRONG> <STRONG><menu.h></STRONG>
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int set_menu_win(MENU *menu, WINDOW *win);
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WINDOW *menu_win(const MENU *menu);
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int set_menu_sub(MENU *menu, WINDOW *sub);
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WINDOW *menu_sub(const MENU *menu);
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int scale_menu(const MENU *menu, int *rows, int *columns);
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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Every menu has an associated pair of <STRONG>curses</STRONG> windows. The
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menu window displays any title and border associated with
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the window; the menu subwindow displays the items of the
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menu that are currently available for selection.
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The first four functions get and set those windows. It is
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not necessary to set either window; by default, the driver
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code uses <STRONG>stdscr</STRONG> for both.
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In the <STRONG>set_</STRONG> functions, window argument of <STRONG>NULL</STRONG> is treated
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as though it were <STRONG>stsdcr</STRONG>. A menu argument of <STRONG>NULL</STRONG> is
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treated as a request to change the system default menu
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window or subwindow.
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The function <STRONG>scale_menu</STRONG> returns the minimum size required
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for the subwindow of <EM>menu</EM>.
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</PRE>
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<H2>RETURN VALUE</H2><PRE>
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Routines that return pointers return <STRONG>NULL</STRONG> on error. Rou-
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tines that return an integer return one of the following
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error codes:
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<STRONG>E_OK</STRONG> The routine succeeded.
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<STRONG>E_SYSTEM_ERROR</STRONG>
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System error occurred (see <STRONG>errno</STRONG>).
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<STRONG>E_BAD_ARGUMENT</STRONG>
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Routine detected an incorrect or out-of-range argu-
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ment.
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<STRONG>E_POSTED</STRONG>
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The menu has already been posted.
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<STRONG>E_NOT_CONNECTED</STRONG>
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No items are connected to the menu.
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</PRE>
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<H2>SEE ALSO</H2><PRE>
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<STRONG><A HREF="ncurses.3x.html">curses(3X)</A></STRONG>, <STRONG><A HREF="menu.3x.html">menu(3X)</A></STRONG>.
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1999-10-24 12:32:42 +08:00
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The header file <STRONG><menu.h></STRONG> automatically includes the header
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file <STRONG><curses.h></STRONG>.
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1997-05-15 12:00:00 +08:00
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</PRE>
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<H2>PORTABILITY</H2><PRE>
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These routines emulate the System V menu library. They
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were not supported on Version 7 or BSD versions.
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</PRE>
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<H2>AUTHORS</H2><PRE>
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Juergen Pfeifer. Manual pages and adaptation for new
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curses by Eric S. Raymond.
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</PRE>
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</BODY>
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</HTML>
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