<!--
****************************************************************************
- * Copyright (c) 1998-2008,2010 Free Software Foundation, Inc. *
+ * Copyright 2018-2019,2020 Thomas E. Dickey *
+ * Copyright 1998-2010,2017 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************
- * @Id: menu_driver.3x,v 1.20 2010/12/04 18:38:55 tom Exp @
+ * @Id: menu_driver.3x,v 1.26 2020/02/02 23:34:34 tom Exp @
-->
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<HTML>
<HEAD>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
-<meta name="generator" content="Manpage converted by man2html - see http://invisible-island.net/scripts/readme.html#others_scripts">
+<meta name="generator" content="Manpage converted by man2html - see https://invisible-island.net/scripts/readme.html#others_scripts">
<TITLE>menu_driver 3x</TITLE>
-<link rev=made href="mailto:bug-ncurses@gnu.org">
+<link rel="author" href="mailto:bug-ncurses@gnu.org">
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</HEAD>
<BODY>
-<H1>menu_driver 3x</H1>
-<HR>
+<H1 class="no-header">menu_driver 3x</H1>
<PRE>
-<STRONG><A HREF="menu_driver.3x.html">menu_driver(3x)</A></STRONG> <STRONG><A HREF="menu_driver.3x.html">menu_driver(3x)</A></STRONG>
+<STRONG><A HREF="menu_driver.3x.html">menu_driver(3x)</A></STRONG>
<STRONG><A HREF="menu_driver.3x.html">menu_driver(3x)</A></STRONG>
-</PRE>
-<H2><a name="h2-NAME">NAME</a></H2><PRE>
+</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
<STRONG>menu_driver</STRONG> - command-processing loop of the menu system
-</PRE>
-<H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
+</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG><menu.h></STRONG>
int menu_driver(MENU *menu, int c);
-</PRE>
-<H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
- Once a menu has been posted (displayed), you should funnel
- input events to it through <STRONG>menu_driver</STRONG>. This routine has
- three major input cases:
+</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
+ Once a menu has been posted (displayed), you should funnel input events
+ to it through <STRONG>menu_driver</STRONG>. This routine has three major input cases:
- <STRONG>o</STRONG> The input is a form navigation request. Navigation
- request codes are constants defined in <STRONG><form.h></STRONG>, which
- are distinct from the key- and character codes
- returned by <STRONG>wgetch</STRONG>.
+ <STRONG>o</STRONG> The input is a form navigation request. Navigation request codes
+ are constants defined in <STRONG><form.h></STRONG>, which are distinct from the key-
+ and character codes returned by <STRONG><A HREF="curs_getch.3x.html">wgetch(3x)</A></STRONG>.
- <STRONG>o</STRONG> The input is a printable character. Printable charac-
- ters (which must be positive, less than 256) are
- checked according to the program's locale settings.
+ <STRONG>o</STRONG> The input is a printable character. Printable characters (which
+ must be positive, less than 256) are checked according to the pro-
+ gram's locale settings.
- <STRONG>o</STRONG> The input is the KEY_MOUSE special key associated with
- an mouse event.
+ <STRONG>o</STRONG> The input is the KEY_MOUSE special key associated with an mouse
+ event.
The menu driver requests are as follows:
Clear the menu pattern buffer.
REQ_BACK_PATTERN
- Delete the previous character from the pattern buf-
- fer.
+ Delete the previous character from the pattern buffer.
REQ_NEXT_MATCH
Move to the next item matching the pattern match.
REQ_PREV_MATCH
Move to the previous item matching the pattern match.
- If the second argument is a printable character, the code
- appends it to the pattern buffer and attempts to move to
- the next item matching the new pattern. If there is no
- such match, <STRONG>menu_driver</STRONG> returns <STRONG>E_NO_MATCH</STRONG> and deletes the
- appended character from the buffer.
+ If the second argument is a printable character, the code appends it to
+ the pattern buffer and attempts to move to the next item matching the
+ new pattern. If there is no such match, <STRONG>menu_driver</STRONG> returns <STRONG>E_NO_MATCH</STRONG>
+ and deletes the appended character from the buffer.
- If the second argument is one of the above pre-defined
- requests, the corresponding action is performed.
+ If the second argument is one of the above pre-defined requests, the
+ corresponding action is performed.
-</PRE>
-<H3><a name="h3-MOUSE-HANDLING">MOUSE HANDLING</a></H3><PRE>
- If the second argument is the KEY_MOUSE special key, the
- associated mouse event is translated into one of the above
- pre-defined requests. Currently only clicks in the user
- window (e.g., inside the menu display area or the decora-
- tion window) are handled.
+</PRE><H3><a name="h3-MOUSE-HANDLING">MOUSE HANDLING</a></H3><PRE>
+ If the second argument is the KEY_MOUSE special key, the associated
+ mouse event is translated into one of the above pre-defined requests.
+ Currently only clicks in the user window (e.g., inside the menu display
+ area or the decoration window) are handled.
If you click above the display region of the menu:
<STRONG>o</STRONG> a REQ_LAST_ITEM is generated for a triple-click.
- If you click at an item inside the display area of the
- menu:
+ If you click at an item inside the display area of the menu:
<STRONG>o</STRONG> the menu cursor is positioned to that item.
- <STRONG>o</STRONG> If you double-click an item a REQ_TOGGLE_ITEM is gen-
- erated and <STRONG>E_UNKNOWN_COMMAND</STRONG> is returned. This return
- value makes sense, because a double click usually
- means that an item-specific action should be returned.
- It is exactly the purpose of this return value to sig-
- nal that an application specific command should be
- executed.
+ <STRONG>o</STRONG> If you double-click an item a REQ_TOGGLE_ITEM is generated and
+ <STRONG>E_UNKNOWN_COMMAND</STRONG> is returned. This return value makes sense,
+ because a double click usually means that an item-specific action
+ should be returned. It is exactly the purpose of this return value
+ to signal that an application specific command should be executed.
- <STRONG>o</STRONG> If a translation into a request was done, <STRONG>menu_driver</STRONG>
- returns the result of this request.
+ <STRONG>o</STRONG> If a translation into a request was done, <STRONG>menu_driver</STRONG> returns the
+ result of this request.
- If you clicked outside the user window or the mouse event
- could not be translated into a menu request an
- <STRONG>E_REQUEST_DENIED</STRONG> is returned.
+ If you clicked outside the user window or the mouse event could not be
+ translated into a menu request an <STRONG>E_REQUEST_DENIED</STRONG> is returned.
-</PRE>
-<H3><a name="h3-APPLICATION-DEFINED-COMMANDS">APPLICATION-DEFINED COMMANDS</a></H3><PRE>
- If the second argument is neither printable nor one of the
- above pre-defined menu requests or KEY_MOUSE, the drive
- assumes it is an application-specific command and returns
- <STRONG>E_UNKNOWN_COMMAND</STRONG>. Application-defined commands should be
- defined relative to <STRONG>MAX_COMMAND</STRONG>, the maximum value of
- these pre-defined requests.
+</PRE><H3><a name="h3-APPLICATION-DEFINED-COMMANDS">APPLICATION-DEFINED COMMANDS</a></H3><PRE>
+ If the second argument is neither printable nor one of the above pre-
+ defined menu requests or KEY_MOUSE, the drive assumes it is an applica-
+ tion-specific command and returns <STRONG>E_UNKNOWN_COMMAND</STRONG>. Application-
+ defined commands should be defined relative to <STRONG>MAX_COMMAND</STRONG>, the maximum
+ value of these pre-defined requests.
-</PRE>
-<H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
+</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
<STRONG>menu_driver</STRONG> return one of the following error codes:
<STRONG>E_OK</STRONG> The routine succeeded.
<STRONG>E_SYSTEM_ERROR</STRONG>
- System error occurred (see <STRONG>errno</STRONG>).
+ System error occurred (see <STRONG>errno(3)</STRONG>).
<STRONG>E_BAD_ARGUMENT</STRONG>
- Routine detected an incorrect or out-of-range argu-
- ment.
+ Routine detected an incorrect or out-of-range argument.
<STRONG>E_BAD_STATE</STRONG>
- Routine was called from an initialization or termina-
- tion function.
+ Routine was called from an initialization or termination function.
<STRONG>E_NOT_POSTED</STRONG>
The menu has not been posted.
The menu driver could not process the request.
-</PRE>
-<H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="menu.3x.html">menu(3x)</A></STRONG>, <STRONG><A HREF="curs_getch.3x.html">curs_getch(3x)</A></STRONG>.
+</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
+ <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="menu.3x.html">menu(3x)</A></STRONG>, <STRONG><A HREF="curs_getch.3x.html">getch(3x)</A></STRONG>.
-</PRE>
-<H2><a name="h2-NOTES">NOTES</a></H2><PRE>
- The header file <STRONG><menu.h></STRONG> automatically includes the header
- files <STRONG><curses.h></STRONG>.
+</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
+ The header file <STRONG><menu.h></STRONG> automatically includes the header files
+ <STRONG><curses.h></STRONG>.
-</PRE>
-<H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
- These routines emulate the System V menu library. They
- were not supported on Version 7 or BSD versions. The sup-
- port for mouse events is ncurses specific.
+</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
+ These routines emulate the System V menu library. They were not sup-
+ ported on Version 7 or BSD versions. The support for mouse events is
+ ncurses specific.
-</PRE>
-<H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE>
- Juergen Pfeifer. Manual pages and adaptation for new
- curses by Eric S. Raymond.
+</PRE><H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE>
+ Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S.
+ Raymond.
- <STRONG><A HREF="menu_driver.3x.html">menu_driver(3x)</A></STRONG>
+
<STRONG><A HREF="menu_driver.3x.html">menu_driver(3x)</A></STRONG>
</PRE>
<div class="nav">
<ul>
projects / ncurses.git / blobdiff