From aa17f5441acf8492f87f3b82b56aa3dbb04cd34e Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Thu, 4 Feb 2016 19:53:13 +0000
Subject: [PATCH] From Laurens Voerman,
 "E:\osg\osgSvnGit\OpenSceneGraph\include\osg/Callback(286): warning C4099:
 'osg::DrawableUpdateCallback' : type name first seen using 'class' now seen
 using 'struct' (E:\osg\osgSvnGit\OpenSceneGraph\src\osgUtil\RenderBin.cpp)   
        E:\osg\osgSvnGit\OpenSceneGraph\include\osg/Callback(27) : see
 declaration of 'osg::DrawableUpdateCallback'

attached is a modified version of include/osg/Callback:
changing
- struct OSG_EXPORT DrawableUpdateCallback : public virtual Callback
- {
to
+ class OSG_EXPORT DrawableUpdateCallback : public virtual Callback
+ {
+ public:

and the same changes for DrawableEventCallback and DrawableCullCallback"
---
 include/osg/Callback | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/include/osg/Callback b/include/osg/Callback
index e0d712c1e..93cb61600 100644
--- a/include/osg/Callback
+++ b/include/osg/Callback
@@ -283,8 +283,9 @@ class Drawable;
 class State;
 class RenderInfo;
 
-struct OSG_EXPORT DrawableUpdateCallback : public virtual Callback
+class OSG_EXPORT DrawableUpdateCallback : public virtual Callback
 {
+public:
     DrawableUpdateCallback() {}
 
     DrawableUpdateCallback(const DrawableUpdateCallback&,const CopyOp&) {}
@@ -302,8 +303,9 @@ struct OSG_EXPORT DrawableUpdateCallback : public virtual Callback
 };
 
 
-struct OSG_EXPORT DrawableEventCallback : public virtual Callback
+class OSG_EXPORT DrawableEventCallback : public virtual Callback
 {
+public:
     DrawableEventCallback() {}
 
     DrawableEventCallback(const DrawableEventCallback&,const CopyOp&) {}
@@ -317,8 +319,9 @@ struct OSG_EXPORT DrawableEventCallback : public virtual Callback
     virtual void event(osg::NodeVisitor*, osg::Drawable*) {}
 };
 
-struct OSG_EXPORT DrawableCullCallback : public virtual Callback
+class OSG_EXPORT DrawableCullCallback : public virtual Callback
 {
+public:
     DrawableCullCallback() {}
 
     DrawableCullCallback(const DrawableCullCallback&,const CopyOp&) {}