Alexandre Julliard : user32: Only call the driver when the cursor position has really changed.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 79c2e55b5a6331d15788f65a929e9e002c2f8b05
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=79c2e55b5a6331d15788f65a92...

Author: Alexandre Julliard 
Date:   Wed Apr 20 20:30:09 2011 +0200

user32: Only call the driver when the cursor position has really changed.

---

dlls/user32/input.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/dlls/user32/input.c b/dlls/user32/input.c
index 9b22021..28377e7 100644
--- a/dlls/user32/input.c
+++ b/dlls/user32/input.c
@@ -301,6 +301,7 @@ BOOL WINAPI GetCursorInfo( PCURSORINFO pci )
 BOOL WINAPI DECLSPEC_HOTPATCH SetCursorPos( INT x, INT y )
 {
     BOOL ret;
+    INT prev_x, prev_y, new_x, new_y;

SERVER_START_REQ( set_cursor )
     {
@@ -309,12 +310,14 @@ BOOL WINAPI DECLSPEC_HOTPATCH SetCursorPos( INT x, INT y )
         req->y     = y;
         if ((ret = !wine_server_call( req )))
         {
-            x = reply->new_x;
-            y = reply->new_y;
+            prev_x = reply->prev_x;
+            prev_y = reply->prev_y;
+            new_x  = reply->new_x;
+            new_y  = reply->new_y;
         }
     }
     SERVER_END_REQ;
-    if (ret) USER_Driver->pSetCursorPos( x, y );
+    if (ret && (prev_x != new_x || prev_y != new_y)) USER_Driver->pSetCursorPos( new_x, new_y );
     return ret;
 }