Ken Thomases : winemac: Don' t generate scroll wheel events for axes with 0 delta.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 1b9fac3b3dfbb63157dbfeeb5d90c34f4f7d81bd
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=1b9fac3b3dfbb63157dbfeeb5d90c34f4f7d81bd

Author: Ken Thomases <ken at codeweavers.com>
Date:   Mon Aug 26 20:14:00 2013 -0500

winemac: Don't generate scroll wheel events for axes with 0 delta.

---

 dlls/winemac.drv/mouse.c |   14 ++++++++------
 1 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/dlls/winemac.drv/mouse.c b/dlls/winemac.drv/mouse.c
index b729d55..f9130c0 100644
--- a/dlls/winemac.drv/mouse.c
+++ b/dlls/winemac.drv/mouse.c
@@ -911,12 +911,14 @@ void macdrv_mouse_scroll(HWND hwnd, const macdrv_event *event)
           event->mouse_scroll.x, event->mouse_scroll.y,
           event->mouse_scroll.time_ms, (GetTickCount() - event->mouse_scroll.time_ms));
 
-    send_mouse_input(hwnd, event->window, MOUSEEVENTF_WHEEL | MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE,
-                     event->mouse_scroll.x, event->mouse_scroll.y,
-                     event->mouse_scroll.y_scroll, FALSE, event->mouse_scroll.time_ms);
-    send_mouse_input(hwnd, event->window, MOUSEEVENTF_HWHEEL | MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE,
-                     event->mouse_scroll.x, event->mouse_scroll.y,
-                     event->mouse_scroll.x_scroll, FALSE, event->mouse_scroll.time_ms);
+    if (event->mouse_scroll.y_scroll)
+        send_mouse_input(hwnd, event->window, MOUSEEVENTF_WHEEL | MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE,
+                         event->mouse_scroll.x, event->mouse_scroll.y,
+                         event->mouse_scroll.y_scroll, FALSE, event->mouse_scroll.time_ms);
+    if (event->mouse_scroll.x_scroll)
+        send_mouse_input(hwnd, event->window, MOUSEEVENTF_HWHEEL | MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE,
+                         event->mouse_scroll.x, event->mouse_scroll.y,
+                         event->mouse_scroll.x_scroll, FALSE, event->mouse_scroll.time_ms);
 }