(event_kind) [WINDOWSNT]: New event type: mouse_wheel.

diff --git a/src/termhooks.h b/src/termhooks.h
index 984c4284ec19665e731d1df59fbe9a212715fd83..431b183f8df42ce40184c747e4e6b80d68c16ee8 100644 (file)
--- a/src/termhooks.h
+++ b/src/termhooks.h
@@ -234,6 +234,23 @@ enum event_kind
                                   the mouse click occurred in.
                                   .timestamp gives a timestamp (in
                                   milliseconds) for the click.  */
+#ifdef WINDOWSNT
+  mouse_wheel,                 /* A mouse-wheel event is generated by a 
+                                  wheel on a mouse (e.g., MS Intellimouse).
+                                  The event contains a delta that corresponds
+                                  to the amount and direction that the wheel
+                                  is rotated.  This delta is typically
+                                  used to implement a scroll or zoom.
+                                  .code gives the delta.
+                                  .modifiers holds the state of the
+                                  modifier keys.
+                                  .x and .y give the mouse position,
+                                  in characters, within the window.
+                                  .frame_or_window gives the frame
+                                  the wheel event occurred in.
+                                  .timestamp gives a timestamp (in
+                                  milliseconds) for the wheel event.  */
+#endif
   scroll_bar_click,            /* .code gives the number of the mouse button
                                   that was clicked.
                                   .modifiers holds the state of the modifier
@@ -284,6 +301,7 @@ struct input_event
   /* For an ascii_keystroke, this is the character.
      For a non_ascii_keystroke, this is the keysym code.
      For a mouse event, this is the button number.  */
+  /* In WindowsNT, for a mouse wheel event, this is the delta.  */
   int code;
   enum scroll_bar_part part;