ncurses 5.5

[ncurses.git] / man / menu_driver.3x

diff --git a/man/menu_driver.3x b/man/menu_driver.3x
index 3643703f8ffc02e04bbf84e299a4d8ac286e075e..1651724b0bffa7a8b54fc04b30c618b454d66ac4 100644 (file)
--- a/man/menu_driver.3x
+++ b/man/menu_driver.3x
@@ -1,4 +1,32 @@
-.'" $Id: menu_driver.3x,v 1.5 1997/12/14 01:28:42 tom Exp $
+.\"***************************************************************************
+.\" Copyright (c) 1998-2002,2003 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            *
+.\" "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.                                                           *
+.\"***************************************************************************
+.\"
+.\" $Id: menu_driver.3x,v 1.11 2003/05/10 20:22:01 tom Exp $
 .TH menu_driver 3X ""
 .SH NAME
 \fBmenu_driver\fR - command-processing loop of the menu system
@@ -9,8 +37,9 @@ int menu_driver(MENU *menu, int c);
 .br
 .SH DESCRIPTION
 Once a menu has been posted (displayed), you should funnel input events to it
-through \fBmenu_driver\fR.  This routine has two major input cases; either
-the input is a menu navigation request or it's a printable ASCII character.
+through \fBmenu_driver\fR.  This routine has three major input cases; either
+the input is a menu navigation request, it's a printable ASCII character or it
+is the KEY_MOUSE special key associated with an mouse event.
 The menu driver requests are as follows:
 .TP 5
 REQ_LEFT_ITEM
@@ -72,8 +101,27 @@ the new pattern.  If there is no such match, \fBmenu_driver\fR returns
 If the second argument is one of the above pre-defined requests, the
 corresponding action is performed.
 .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.
+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, a REQ_SCR_ULINE is generated, if you
+doubleclick a REQ_SCR_UPAGE is generated and if you tripleclick a
+REQ_FIRST_ITEM is generated. If you click below the display region of
+the menu, a REQ_SCR_DLINE is generated, if you doubleclick a REQ_SCR_DPAGE
+is generated and if you tripleclick a REQ_LAST_ITEM is generated. If you
+click at an item inside the display area of the menu, the menu cursor
+is positioned to that item. If you double-click at 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's exactly the purpose of this return value to signal that an
+application specific command should be executed. If a translation
+into a request was done, \fBmenu_driver\fR returns the result of this request.
+If you clicked outside the user window or the mouse event couldn't be translated
+into a menu request an \fBE_REQUEST_DENIED\fR is returned.
+.PP
 If the second argument is neither printable ASCII nor one of the above
-pre-defined menu requests, the drive assumes it is an application-specific
+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
 pre-defined requests.
@@ -110,7 +158,7 @@ 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.
+Version 7 or BSD versions. The support for mouse events is ncurses specific.
 .SH AUTHORS
 Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric
 S. Raymond.