From 35f154cb72fa4766b678f0418f75b15d7ce38f97 Mon Sep 17 00:00:00 2001
From: the_fiddler <the_fiddler@ebc5dd9b-fb1d-0410-b6f8-d24c324e9604>
Date: Wed, 26 Sep 2007 16:12:31 +0000
Subject: [PATCH] Problem with mouse wheel not getting updated.

---
 Source/OpenTK/Platform/X11/X11Mouse.cs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Source/OpenTK/Platform/X11/X11Mouse.cs b/Source/OpenTK/Platform/X11/X11Mouse.cs
index c22484c9..69749840 100644
--- a/Source/OpenTK/Platform/X11/X11Mouse.cs
+++ b/Source/OpenTK/Platform/X11/X11Mouse.cs
@@ -90,8 +90,10 @@ namespace OpenTK.Platform.X11
             m[OpenTK.Input.MouseButton.Left] = (state & (int)X11.MouseMask.Button1Mask) != 0;
             m[OpenTK.Input.MouseButton.Middle] = (state & (int)X11.MouseMask.Button2Mask) != 0;
             m[OpenTK.Input.MouseButton.Right] = (state & (int)X11.MouseMask.Button3Mask) != 0;
-            m.Wheel += (state & (int)X11.MouseMask.Button4Mask);
-            m.Wheel -= (state & (int)X11.MouseMask.Button5Mask);
+            if ((state & (int)X11.MouseMask.Button4Mask) != 0) m.Wheel++;
+            if ((state & (int)X11.MouseMask.Button5Mask) != 0) m.Wheel--;
+            //m.Wheel += (state & (int)X11.MouseMask.Button4Mask);
+            //m.Wheel -= (state & (int)X11.MouseMask.Button5Mask);
             m.X = root_x;
             m.Y = root_y;
         }