(kbd_buffer_get_event) [WINDOWSNT]: Support

menu_bar_activate_event.
(set-input-mode) [DOS_NT]: Do not invoke reset and init sys modes.
(Qmouse_wheel) [WINDOWSNT]: New variable.
(discard_mouse_events): New function.
(mouse_wheel_syms) [WINDOWSNT]: New variable.
(lispy_mouse_wheel_names) [WINDOWSNT]: New variable.
(make_lispy_event) [WINDOWSNT]: Make mouse-wheel events.
(syms_of_keyboard) [WINDOWSNT]: Define Qmouse_wheel and
mouse_wheel_syms.

1 files changed, 117 insertions, 4 deletions

diff --git a/src/keyboard.c b/src/keyboard.c
index 1d0e36964ae..4c872016eb5 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -444,6 +444,9 @@ Lisp_Object Qmake_frame_visible;
 /* Symbols to denote kinds of events.  */
 Lisp_Object Qfunction_key;
 Lisp_Object Qmouse_click;
+#ifdef WINDOWSNT
+Lisp_Object Qmouse_wheel;
+#endif
 /* Lisp_Object Qmouse_movement; - also an event header */
 
 /* Properties of event headers.  */
@@ -2629,6 +2632,28 @@ kbd_buffer_store_event (event)
     }
 }
 
+/* Discard any mouse events in the event buffer by setting them to
+   no_event.  */
+void
+discard_mouse_events ()
+{
+  struct input_event *sp;
+  for (sp = kbd_fetch_ptr; sp != kbd_store_ptr; sp++)
+    {
+      if (sp == kbd_buffer + KBD_BUFFER_SIZE)
+        sp = kbd_buffer;
+
+      if (sp->kind == mouse_click
+#ifdef WINDOWSNT
+          || sp->kind == w32_scroll_bar_click
+#endif
+          || sp->kind == scroll_bar_click)
+        {
+          sp->kind = no_event;
+        }
+    }
+}
+
 /* Read one event from the event buffer, waiting if necessary.
    The value is a Lisp object representing the event.
    The value is nil for an event that should be ignored,
@@ -2795,7 +2820,7 @@ kbd_buffer_get_event (kbp, used_mouse_menu)
           XSETBUFFER (obj, current_buffer);
           kbd_fetch_ptr = event + 1;
         }
-#ifdef USE_X_TOOLKIT
+#if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI)
       else if (event->kind == menu_bar_activate_event)
         {
           kbd_fetch_ptr = event + 1;
@@ -2810,6 +2835,8 @@ kbd_buffer_get_event (kbp, used_mouse_menu)
          (They shouldn't otherwise be found in the buffer,
          but on some machines it appears they do show up
          even without MULTI_KBOARD.)  */
+      /* On Windows NT/9X, no_event is used to delete extraneous
+         mouse events during a popup-menu call.  */
       else if (event->kind == no_event)
         kbd_fetch_ptr = event + 1;
 
@@ -3220,6 +3247,9 @@ timer_check (do_it_now)
 static Lisp_Object accent_key_syms;
 static Lisp_Object func_key_syms;
 static Lisp_Object mouse_syms;
+#ifdef WINDOWSNT
+static Lisp_Object mouse_wheel_syms;
+#endif
 
 /* This is a list of keysym codes for special "accent" characters.
    It parallels lispy_accent_keys.  */
@@ -3639,6 +3669,20 @@ static char *lispy_mouse_names[] =
   "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5"
 };
 
+#ifdef WINDOWSNT
+/* mouse-wheel events are generated by the wheel on devices such as
+   the MS Intellimouse.  The wheel sits in between the left and right
+   mouse buttons, and is typically used to scroll or zoom the window
+   underneath the pointer.  mouse-wheel events specify the object on
+   which they operate, and a delta corresponding to the amount and
+   direction that the wheel is rotated.  Clicking the mouse-wheel
+   generates a mouse-2 event.  */
+static char *lispy_mouse_wheel_names[] = 
+{
+  "mouse-wheel"
+};
+#endif /* WINDOWSNT */
+
 /* Scroll bar parts.  */
 Lisp_Object Qabove_handle, Qhandle, Qbelow_handle;
 Lisp_Object Qup, Qdown;
@@ -4069,8 +4113,68 @@ make_lispy_event (event)
                                Qnil));
         }
       }
-#endif
+    case mouse_wheel:
+      {
+        int part;
+        FRAME_PTR f = XFRAME (event->frame_or_window);
+        Lisp_Object window;
+        Lisp_Object posn;
+        Lisp_Object head, position;
+        int row, column;
+
+        /* Ignore mouse events that were made on frame that
+           have been deleted.  */
+        if (! FRAME_LIVE_P (f))
+          return Qnil;
+        pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y),
+                               &column, &row, NULL, 1);
+        window = window_from_coordinates (f, column, row, &part);
+
+        if (!WINDOWP (window))
+          {
+            window = event->frame_or_window;
+            posn = Qnil;
+          }
+        else
+          {
+            int pixcolumn, pixrow;
+            column -= XINT (XWINDOW (window)->left);
+            row -= XINT (XWINDOW (window)->top);
+            glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow);
+            XSETINT (event->x, pixcolumn);
+            XSETINT (event->y, pixrow);
+
+            if (part == 1)
+              posn = Qmode_line;
+            else if (part == 2)
+              posn = Qvertical_line;
+            else
+              XSETINT (posn,
+                       buffer_posn_from_coords (XWINDOW (window),
+                                                column, row));
+          }
 
+        {
+          Lisp_Object head, position;
+
+          position
+            = Fcons (window,
+                     Fcons (posn,
+                            Fcons (Fcons (event->x, event->y),
+                                   Fcons (make_number (event->timestamp),
+                                          Qnil))));
+
+          head = modify_event_symbol (0, event->modifiers,
+                                      Qmouse_wheel, Qnil,
+                                      lispy_mouse_wheel_names,
+                                      &mouse_wheel_syms, 1);
+          return Fcons (head,
+                        Fcons (position,
+                               Fcons (make_number (event->code),
+                                      Qnil)));
+        }
+      }
+#endif /* WINDOWSNT */
 #endif /* HAVE_MOUSE */
 
 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI)
@@ -7704,7 +7808,7 @@ See also `current-input-mode'.")
   stop_polling ();
 #endif
 
-#ifndef MSDOS
+#ifndef DOS_NT
   /* this causes startup screen to be restored and messes with the mouse */
   reset_sys_modes ();
 #endif
@@ -7743,7 +7847,7 @@ See also `current-input-mode'.")
     /* Don't let this value be out of range.  */
     quit_char = XINT (quit) & (meta_key ? 0377 : 0177);
 
-#ifndef MSDOS
+#ifndef DOS_NT
   init_sys_modes ();
 #endif
 
@@ -7970,6 +8074,10 @@ syms_of_keyboard ()
   staticpro (&Qfunction_key);
   Qmouse_click = intern ("mouse-click");
   staticpro (&Qmouse_click);
+#ifdef WINDOWSNT
+  Qmouse_wheel = intern ("mouse-wheel");
+  staticpro (&Qmouse_wheel);
+#endif
 
   Qmenu_enable = intern ("menu-enable");
   staticpro (&Qmenu_enable);
@@ -8062,6 +8170,11 @@ syms_of_keyboard ()
   mouse_syms = Qnil;
   staticpro (&mouse_syms);
 
+#ifdef WINDOWSNT
+  mouse_wheel_syms = Qnil;
+  staticpro (&mouse_wheel_syms);
+#endif
+
   unread_switch_frame = Qnil;
   staticpro (&unread_switch_frame);