Made the sort callback's sort method pure virtual.

2002-08-26 12:34:42 +00:00
parent 43d3beb59e
commit 0b5c20af8d
1 changed files with 1 additions and 1 deletions
--- a/include/osgUtil/RenderBin
+++ b/include/osgUtil/RenderBin
@@ -72,7 +72,7 @@ class OSGUTIL_EXPORT RenderBin : public osg::Object
        
        struct SortCallback : public osg::Referenced    
        {
-            virtual void sort(RenderBin*) {};
+            virtual void sort(RenderBin*) = 0;
        };

        void setSortLocalCallback(SortCallback* sortCallback) { _sortLocalCallback = sortCallback; }