.\"***************************************************************************
-.\" Copyright 2018-2019,2020 Thomas E. Dickey *
+.\" Copyright 2018-2023,2024 Thomas E. Dickey *
.\" Copyright 1998-2010,2017 Free Software Foundation, Inc. *
.\" *
.\" Permission is hereby granted, free of charge, to any person obtaining a *
.\" authorization. *
.\"***************************************************************************
.\"
-.\" $Id: menu_driver.3x,v 1.27 2020/10/17 23:42:13 tom Exp $
-.TH menu_driver 3X ""
+.\" $Id: menu_driver.3x,v 1.47 2024/03/16 15:35:01 tom Exp $
+.TH menu_driver 3X 2024-03-16 "ncurses @NCURSES_MAJOR@.@NCURSES_MINOR@" "Library calls"
.de bP
.ie n .IP \(bu 4
.el .IP \(bu 2
..
.SH NAME
-\fBmenu_driver\fR \- command-processing loop of the menu system
+\fBmenu_driver\fP \-
+command-processing loop of the menu system
.SH SYNOPSIS
-\fB#include <menu.h>\fR
-.sp
-\fBint menu_driver(MENU *\fP\fImenu\fP\fB, int \fP\fIc\fP\fB);\fP
-.br
+.nf
+\fB#include <menu.h>
+.PP
+\fBint menu_driver(MENU *\fImenu\fP, int \fIc\fP);
+.fi
.SH DESCRIPTION
Once a menu has been posted (displayed), you should funnel input events to it
-through \fBmenu_driver\fR. This routine has three major input cases:
+through \fBmenu_driver\fP. This routine has three major input cases:
.bP
The input is a form navigation request.
Navigation request codes are constants defined in \fB<form.h>\fP,
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, \fBmenu_driver\fR returns
-\fBE_NO_MATCH\fR and deletes the appended character from the buffer.
+If there is no such match, \fBmenu_driver\fP returns
+\fBE_NO_MATCH\fP 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.
-.SS MOUSE HANDLING
-.PP
+.SS "Mouse Handling"
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
the menu cursor is positioned to that item.
.bP
If you double-click an item a REQ_TOGGLE_ITEM
-is generated and \fBE_UNKNOWN_COMMAND\fR is returned.
+is generated and \fBE_UNKNOWN_COMMAND\fP is returned.
This return value makes sense,
because a double click usually means that an item-specific action should
be returned.
application specific command should be executed.
.bP
If a translation
-into a request was done, \fBmenu_driver\fR returns the result of this request.
+into a request was done, \fBmenu_driver\fP returns the result of this request.
.PP
If you clicked outside the user window
or the mouse event could not be translated
-into a menu request an \fBE_REQUEST_DENIED\fR is returned.
-.SS APPLICATION-DEFINED COMMANDS
-.PP
+into a menu request an \fBE_REQUEST_DENIED\fP is returned.
+.SS "Application-defined Commands"
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 \fBE_UNKNOWN_COMMAND\fR. Application-defined commands
-should be defined relative to \fBMAX_COMMAND\fR, the maximum value of these
+command and returns \fBE_UNKNOWN_COMMAND\fP. Application-defined commands
+should be defined relative to \fBMAX_COMMAND\fP, the maximum value of these
pre-defined requests.
.SH RETURN VALUE
-\fBmenu_driver\fR return one of the following error codes:
+\fBmenu_driver\fP return one of the following error codes:
.TP 5
.B E_OK
The routine succeeded.
.TP 5
.B E_SYSTEM_ERROR
-System error occurred (see \fBerrno\fR(3)).
+System error occurred (see \fBerrno\fP(3)).
.TP 5
.B E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argument.
.TP 5
.B E_REQUEST_DENIED
The menu driver could not process the request.
-.SH SEE ALSO
-\fBcurses\fR(3X),
-\fBmenu\fR(3X),
-\fBgetch\fR(3X).
-.SH NOTES
-The header file \fB<menu.h>\fR automatically includes the header files
-\fB<curses.h>\fR.
.SH PORTABILITY
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.
+The support for mouse events is \fI\%ncurses\fP specific.
.SH AUTHORS
Juergen Pfeifer.
Manual pages and adaptation for new curses by Eric S. Raymond.
+.SH SEE ALSO
+\fB\%curses\fP(3X),
+\fB\%getch\fP(3X),
+\fB\%menu\fP(3X)
projects / ncurses.git / blobdiff