1999-08-24 01:06:48 +00:00
|
|
|
.\"***************************************************************************
|
2020-02-19 16:58:06 +00:00
|
|
|
.\" Copyright 2018-2019,2020 Thomas E. Dickey *
|
|
|
|
.\" Copyright 1998-2010,2017 Free Software Foundation, Inc. *
|
1999-08-24 01:06:48 +00:00
|
|
|
.\" *
|
|
|
|
.\" Permission is hereby granted, free of charge, to any person obtaining a *
|
|
|
|
.\" copy of this software and associated documentation files (the *
|
|
|
|
.\" "Software"), to deal in the Software without restriction, including *
|
|
|
|
.\" without limitation the rights to use, copy, modify, merge, publish, *
|
|
|
|
.\" distribute, distribute with modifications, sublicense, and/or sell *
|
|
|
|
.\" copies of the Software, and to permit persons to whom the Software is *
|
|
|
|
.\" furnished to do so, subject to the following conditions: *
|
|
|
|
.\" *
|
|
|
|
.\" The above copyright notice and this permission notice shall be included *
|
|
|
|
.\" in all copies or substantial portions of the Software. *
|
|
|
|
.\" *
|
|
|
|
.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
|
|
|
|
.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
|
|
|
|
.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
|
|
|
|
.\" IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
|
|
|
|
.\" DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
|
|
|
|
.\" OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
|
|
|
|
.\" THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
|
|
|
|
.\" *
|
|
|
|
.\" Except as contained in this notice, the name(s) of the above copyright *
|
|
|
|
.\" holders shall not be used in advertising or otherwise to promote the *
|
|
|
|
.\" sale, use or other dealings in this Software without prior written *
|
|
|
|
.\" authorization. *
|
|
|
|
.\"***************************************************************************
|
|
|
|
.\"
|
2020-02-19 16:58:06 +00:00
|
|
|
.\" $Id: menu_driver.3x,v 1.26 2020/02/02 23:34:34 tom Exp $
|
1999-08-24 01:06:48 +00:00
|
|
|
.TH menu_driver 3X ""
|
2014-02-28 19:18:07 +00:00
|
|
|
.de bP
|
2020-02-07 08:36:41 +00:00
|
|
|
.ie n .IP \(bu 4
|
|
|
|
.el .IP \(bu 2
|
2014-02-28 19:18:07 +00:00
|
|
|
..
|
1999-08-24 01:06:48 +00:00
|
|
|
.SH NAME
|
2014-02-28 19:18:07 +00:00
|
|
|
\fBmenu_driver\fR \- command-processing loop of the menu system
|
1999-08-24 01:06:48 +00:00
|
|
|
.SH SYNOPSIS
|
|
|
|
\fB#include <menu.h>\fR
|
|
|
|
.br
|
|
|
|
int menu_driver(MENU *menu, int c);
|
|
|
|
.br
|
|
|
|
.SH DESCRIPTION
|
|
|
|
Once a menu has been posted (displayed), you should funnel input events to it
|
2008-11-09 14:08:54 +00:00
|
|
|
through \fBmenu_driver\fR. This routine has three major input cases:
|
2014-02-28 19:18:07 +00:00
|
|
|
.bP
|
2008-11-09 14:08:54 +00:00
|
|
|
The input is a form navigation request.
|
|
|
|
Navigation request codes are constants defined in \fB<form.h>\fP,
|
2020-02-07 08:36:41 +00:00
|
|
|
which are distinct from the key- and character codes
|
|
|
|
returned by \fBwgetch\fP(3X).
|
2014-02-28 19:18:07 +00:00
|
|
|
.bP
|
2008-11-09 14:08:54 +00:00
|
|
|
The input is a printable character.
|
|
|
|
Printable characters (which must be positive, less than 256) are
|
|
|
|
checked according to the program's locale settings.
|
2014-02-28 19:18:07 +00:00
|
|
|
.bP
|
2008-11-09 14:08:54 +00:00
|
|
|
The input is the KEY_MOUSE special key associated with an mouse event.
|
|
|
|
.PP
|
1999-08-24 01:06:48 +00:00
|
|
|
The menu driver requests are as follows:
|
|
|
|
.TP 5
|
|
|
|
REQ_LEFT_ITEM
|
|
|
|
Move left to an item.
|
|
|
|
.TP 5
|
|
|
|
REQ_RIGHT_ITEM
|
|
|
|
Move right to an item.
|
|
|
|
.TP 5
|
|
|
|
REQ_UP_ITEM
|
|
|
|
Move up to an item.
|
|
|
|
.TP 5
|
|
|
|
REQ_DOWN_ITEM
|
|
|
|
Move down to an item.
|
|
|
|
.TP 5
|
|
|
|
REQ_SCR_ULINE
|
|
|
|
Scroll up a line.
|
|
|
|
.TP 5
|
|
|
|
REQ_SCR_DLINE
|
|
|
|
Scroll down a line.
|
|
|
|
.TP 5
|
|
|
|
REQ_SCR_DPAGE
|
|
|
|
Scroll down a page.
|
|
|
|
.TP 5
|
|
|
|
REQ_SCR_UPAGE
|
|
|
|
Scroll up a page.
|
|
|
|
.TP 5
|
|
|
|
REQ_FIRST_ITEM
|
|
|
|
Move to the first item.
|
|
|
|
.TP 5
|
|
|
|
REQ_LAST_ITEM
|
|
|
|
Move to the last item.
|
|
|
|
.TP 5
|
|
|
|
REQ_NEXT_ITEM
|
|
|
|
Move to the next item.
|
|
|
|
.TP 5
|
|
|
|
REQ_PREV_ITEM
|
|
|
|
Move to the previous item.
|
|
|
|
.TP 5
|
|
|
|
REQ_TOGGLE_ITEM
|
|
|
|
Select/deselect an item.
|
|
|
|
.TP 5
|
|
|
|
REQ_CLEAR_PATTERN
|
|
|
|
Clear the menu pattern buffer.
|
|
|
|
.TP 5
|
|
|
|
REQ_BACK_PATTERN
|
|
|
|
Delete the previous character from the pattern buffer.
|
|
|
|
.TP 5
|
|
|
|
REQ_NEXT_MATCH
|
|
|
|
Move to the next item matching the pattern match.
|
|
|
|
.TP 5
|
|
|
|
REQ_PREV_MATCH
|
|
|
|
Move to the previous item matching the pattern match.
|
|
|
|
.PP
|
2008-11-09 14:08:54 +00:00
|
|
|
If the second argument is a printable character, the code appends
|
1999-08-24 01:06:48 +00:00
|
|
|
it to the pattern buffer and attempts to move to the next item matching
|
2020-02-07 08:36:41 +00:00
|
|
|
the new pattern.
|
|
|
|
If there is no such match, \fBmenu_driver\fR returns
|
1999-08-24 01:06:48 +00:00
|
|
|
\fBE_NO_MATCH\fR and deletes the appended character from the buffer.
|
|
|
|
.PP
|
|
|
|
If the second argument is one of the above pre-defined requests, the
|
|
|
|
corresponding action is performed.
|
2007-12-30 11:08:14 +00:00
|
|
|
.SS MOUSE HANDLING
|
1999-08-24 01:06:48 +00:00
|
|
|
.PP
|
|
|
|
If the second argument is the KEY_MOUSE special key, the associated
|
|
|
|
mouse event is translated into one of the above pre-defined requests.
|
2014-02-28 19:18:07 +00:00
|
|
|
Currently only clicks in the user window (e.g., inside the menu display
|
2007-12-30 11:08:14 +00:00
|
|
|
area or the decoration window) are handled.
|
|
|
|
.PP
|
|
|
|
If you click above the display region of the menu:
|
2014-02-28 19:18:07 +00:00
|
|
|
.bP
|
2007-12-30 11:08:14 +00:00
|
|
|
a REQ_SCR_ULINE is generated for a single click,
|
2014-02-28 19:18:07 +00:00
|
|
|
.bP
|
2007-12-30 11:08:14 +00:00
|
|
|
a REQ_SCR_UPAGE is generated for a double-click and
|
2014-02-28 19:18:07 +00:00
|
|
|
.bP
|
2007-12-30 11:08:14 +00:00
|
|
|
a REQ_FIRST_ITEM is generated for a triple-click.
|
|
|
|
.PP
|
|
|
|
If you click below the display region of the menu:
|
2014-02-28 19:18:07 +00:00
|
|
|
.bP
|
2007-12-30 11:08:14 +00:00
|
|
|
a REQ_SCR_DLINE is generated for a single click,
|
2014-02-28 19:18:07 +00:00
|
|
|
.bP
|
2007-12-30 11:08:14 +00:00
|
|
|
a REQ_SCR_DPAGE is generated for a double-click and
|
2014-02-28 19:18:07 +00:00
|
|
|
.bP
|
2007-12-30 11:08:14 +00:00
|
|
|
a REQ_LAST_ITEM is generated for a triple-click.
|
|
|
|
.PP
|
|
|
|
If you click at an item inside the display area of the menu:
|
2014-02-28 19:18:07 +00:00
|
|
|
.bP
|
2007-12-30 11:08:14 +00:00
|
|
|
the menu cursor is positioned to that item.
|
2014-02-28 19:18:07 +00:00
|
|
|
.bP
|
2007-12-30 11:08:14 +00:00
|
|
|
If you double-click an item a REQ_TOGGLE_ITEM
|
|
|
|
is generated and \fBE_UNKNOWN_COMMAND\fR 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.
|
2014-02-28 19:18:07 +00:00
|
|
|
.bP
|
2007-12-30 11:08:14 +00:00
|
|
|
If a translation
|
1999-08-24 01:06:48 +00:00
|
|
|
into a request was done, \fBmenu_driver\fR returns the result of this request.
|
2007-12-30 11:08:14 +00:00
|
|
|
.PP
|
2020-02-07 08:36:41 +00:00
|
|
|
If you clicked outside the user window
|
|
|
|
or the mouse event could not be translated
|
2007-01-20 07:32:02 +00:00
|
|
|
into a menu request an \fBE_REQUEST_DENIED\fR is returned.
|
2007-12-30 11:08:14 +00:00
|
|
|
.SS APPLICATION-DEFINED COMMANDS
|
1999-08-24 01:06:48 +00:00
|
|
|
.PP
|
2008-11-09 14:08:54 +00:00
|
|
|
If the second argument is neither printable nor one of the above
|
2020-02-07 08:36:41 +00:00
|
|
|
pre-defined menu requests or KEY_MOUSE,
|
|
|
|
the drive assumes it is an application-specific
|
1999-08-24 01:06:48 +00:00
|
|
|
command and returns \fBE_UNKNOWN_COMMAND\fR. Application-defined commands
|
|
|
|
should be defined relative to \fBMAX_COMMAND\fR, the maximum value of these
|
|
|
|
pre-defined requests.
|
|
|
|
.SH RETURN VALUE
|
|
|
|
\fBmenu_driver\fR return one of the following error codes:
|
|
|
|
.TP 5
|
2007-01-20 07:32:02 +00:00
|
|
|
.B E_OK
|
1999-08-24 01:06:48 +00:00
|
|
|
The routine succeeded.
|
|
|
|
.TP 5
|
2007-01-20 07:32:02 +00:00
|
|
|
.B E_SYSTEM_ERROR
|
2020-02-07 08:36:41 +00:00
|
|
|
System error occurred (see \fBerrno\fR(3)).
|
1999-08-24 01:06:48 +00:00
|
|
|
.TP 5
|
2007-01-20 07:32:02 +00:00
|
|
|
.B E_BAD_ARGUMENT
|
1999-08-24 01:06:48 +00:00
|
|
|
Routine detected an incorrect or out-of-range argument.
|
|
|
|
.TP 5
|
2007-01-20 07:32:02 +00:00
|
|
|
.B E_BAD_STATE
|
1999-08-24 01:06:48 +00:00
|
|
|
Routine was called from an initialization or termination function.
|
|
|
|
.TP 5
|
2007-01-20 07:32:02 +00:00
|
|
|
.B E_NOT_POSTED
|
1999-08-24 01:06:48 +00:00
|
|
|
The menu has not been posted.
|
|
|
|
.TP 5
|
2007-01-20 07:32:02 +00:00
|
|
|
.B E_UNKNOWN_COMMAND
|
1999-08-24 01:06:48 +00:00
|
|
|
The menu driver code saw an unknown request code.
|
|
|
|
.TP 5
|
2007-01-20 07:32:02 +00:00
|
|
|
.B E_NO_MATCH
|
1999-08-24 01:06:48 +00:00
|
|
|
Character failed to match.
|
|
|
|
.TP 5
|
2007-01-20 07:32:02 +00:00
|
|
|
.B E_REQUEST_DENIED
|
1999-08-24 01:06:48 +00:00
|
|
|
The menu driver could not process the request.
|
|
|
|
.SH SEE ALSO
|
2008-11-09 14:08:54 +00:00
|
|
|
\fBcurses\fR(3X),
|
|
|
|
\fBmenu\fR(3X),
|
2014-02-28 19:18:07 +00:00
|
|
|
\fBgetch\fR(3X).
|
1999-08-24 01:06:48 +00:00
|
|
|
.SH NOTES
|
|
|
|
The header file \fB<menu.h>\fR automatically includes the header files
|
|
|
|
\fB<curses.h>\fR.
|
|
|
|
.SH PORTABILITY
|
2020-02-07 08:36:41 +00:00
|
|
|
These routines emulate the System V menu library.
|
|
|
|
They were not supported on
|
|
|
|
Version 7 or BSD versions.
|
|
|
|
The support for mouse events is ncurses specific.
|
1999-08-24 01:06:48 +00:00
|
|
|
.SH AUTHORS
|
2020-02-07 08:36:41 +00:00
|
|
|
Juergen Pfeifer.
|
|
|
|
Manual pages and adaptation for new curses by Eric S. Raymond.
|