From 3eec065016664956e759ef8fc58d119945ed1506 Mon Sep 17 00:00:00 2001
From: rkrolib <rkrolib@7f0cb862-5218-0410-a997-914c9d46530a>
Date: Thu, 30 Oct 2003 03:51:33 +0000
Subject: [PATCH] Forgot to set {direction} explicitly to +/- 1 for freeglut
 mouse-wheel API on MS-WINDOWS.  Oops.

Now it should always report +/- 1 on MS-WINDOWS, per the spec.


git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@269 7f0cb862-5218-0410-a997-914c9d46530a
---
 freeglut/freeglut/src/freeglut_main.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/freeglut/freeglut/src/freeglut_main.c b/freeglut/freeglut/src/freeglut_main.c
index e1138f3..74641a0 100644
--- a/freeglut/freeglut/src/freeglut_main.c
+++ b/freeglut/freeglut/src/freeglut_main.c
@@ -1459,9 +1459,15 @@ LRESULT CALLBACK fgWindowProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPara
       {
         int wheel_number = LOWORD ( lParam ) ;
         /* THIS IS SPECULATIVE -- John Fay, 10/2/03 */
-        int direction = HIWORD ( lParam ) / 120 ;
+        int ticks = HIWORD ( lParam ) / 120 ;
         /* Should be WHEEL_DELTA instead of 120 */
-        int ticks = abs( direction );
+        int direction = 1;
+
+        if( ticks < 0 )
+        {
+            direction = -1;
+            ticks = -ticks;
+        }
 
         /*
          * The mouse cursor has moved. Remember the new mouse cursor's position