Introduced Widget::WidgetStateSet to help localize the StateSet set up by Widget implementations from being serialized or

affecting what end users apply via the standard Node::s/getStateSet().

Further work on TabWidget.


git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14440 16af8721-9629-0410-8352-f15c8da7e697

src/osgUI/PushButton.cpp

@@ -111,7 +111,7 @@ void PushButton::createGraphicsImplementation()
 
     group->addChild(_textDrawable.get());
 
-    style->setupClipStateSet(_extents, getOrCreateStateSet());
+    style->setupClipStateSet(_extents, getOrCreateWidgetStateSet());
 
     setGraphicsSubgraph(0, group.get());
 }