X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=man%2Fform_driver.3x;h=67a986b006ba90b50f820784fe07e9747e7d4fc9;hp=c88e3be0ae1ce952078a13fe6cb59c72297e913b;hb=6b96eb711cbf58da43002ff14b66d8a52c19a731;hpb=027ae42953e3186daed8f3882da73de48291b606;ds=sidebyside

diff --git a/man/form_driver.3x b/man/form_driver.3x
index c88e3be0..67a986b0 100644
--- a/man/form_driver.3x
+++ b/man/form_driver.3x
@@ -1,5 +1,5 @@
 .\"***************************************************************************
-.\" Copyright (c) 1998-2002,2006 Free Software Foundation, Inc.              *
+.\" Copyright (c) 1998-2008,2010 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            *
@@ -26,10 +26,13 @@
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"
-.\" $Id: form_driver.3x,v 1.12 2006/11/04 18:51:00 tom Exp $
+.\" $Id: form_driver.3x,v 1.22 2010/12/04 18:38:55 tom Exp $
 .TH form_driver 3X ""
+.de bP
+.IP \(bu 4
+..
 .SH NAME
-\fBform_driver\fR - command-processing loop of the form system
+\fBform_driver\fR \- command-processing loop of the form system
 .SH SYNOPSIS
 \fB#include <form.h>\fR
 .br
@@ -37,8 +40,18 @@ int form_driver(FORM *form, int c);
 .br
 .SH DESCRIPTION
 Once a form has been posted (displayed), you should funnel input events to it
-through \fBform_driver\fR.  This routine has two major input cases; either
-the input is a form navigation request or it's a printable ASCII character.
+through \fBform_driver\fR.  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,
+which are distinct from the key- and character codes returned by \fBwgetch\fP.
+.bP
+The input is a printable character.
+Printable characters (which must be positive, less than 256) are
+checked according to the program's locale settings.
+.bP
+The input is the KEY_MOUSE special key associated with an mouse event.
+.PP
 The form driver requests are as follows:
 .TP 5
 REQ_NEXT_PAGE
@@ -218,11 +231,59 @@ Display next field choice.
 REQ_PREV_CHOICE
 Display previous field choice.
 .PP
-If the second argument is a printable ASCII character, the driver places it
+If the second argument is a printable character, the driver places it
 in the current position in the current field.  If it is one of the forms
 requests listed above, that request is executed.
+.SS MOUSE HANDLING
+.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 form display
+area or the decoration window) are handled.
+.PP
+If you click above the display region of the form:
+.RS 3
+.TP
+a REQ_PREV_FIELD is generated for a single click,
+.TP
+a REQ_PREV_PAGE is generated for a double-click and
+.TP
+a REQ_FIRST_FIELD is generated for a triple-click.
+.RE
+.PP
+If you click below the display region of the form:
+.RS 3
+.TP
+a REQ_NEXT_FIELD is generated for a single click,
+.TP
+a REQ_NEXT_PAGE is generated for a double-click and
+.TP
+a REQ_LAST_FIELD is generated for a triple-click.
+.RE
+.PP
+If you click at an field inside the display area of the form:
+.RS 3
+.bP
+the form cursor is positioned to that field.
+.bP
+If you double-click a field,
+the form cursor is positioned to that field
+and \fBE_UNKNOWN_COMMAND\fR is returned.
+This return value makes sense,
+because a double click usually means that an field-specific action should
+be returned.
+It is exactly the purpose of this return value to signal that an
+application specific command should be executed.
+.bP
+If a translation
+into a request was done, \fBform_driver\fR returns the result of this request.
+.RE
+.PP
+If you clicked outside the user window or the mouse event could not be translated
+into a form request an \fBE_REQUEST_DENIED\fR is returned.
+.SS APPLICATION-DEFINED COMMANDS
 .PP
-If the second argument is neither printable ASCII nor one of the above
+If the second argument is neither printable nor one of the above
 pre-defined form requests, the driver 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
@@ -255,7 +316,10 @@ System error occurred (see \fBerrno\fR).
 The form driver code saw an unknown request code.
 .
 .SH SEE ALSO
-\fBcurses\fR(3X), \fBform\fR(3X).
+\fBcurses\fR(3X),
+\fBform\fR(3X),
+\fBform_variables\fR(3X),
+\fBgetch\fR(3X).
 .SH NOTES
 The header file \fB<form.h>\fR automatically includes the header files
 \fB<curses.h>\fR.
@@ -265,9 +329,3 @@ Version 7 or BSD versions.
 .SH AUTHORS
 Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric
 S. Raymond.
-.\"#
-.\"# The following sets edit modes for GNU EMACS
-.\"# Local Variables:
-.\"# mode:nroff
-.\"# fill-column:79
-.\"# End: