class TopoDS_Shape;
class QString;
class QColor;
+class Handle_AIS_InteractiveContext;
class Handle_AIS_InteractiveObject;
class Handle_Aspect_ColorScale;
static OCCViewer_ViewManager* viewManager();
static OCCViewer_Viewer* viewer();
static OCCViewer_ViewWindow* viewWindow();
+ static Handle_AIS_InteractiveContext context();
static void eraseAll( bool isUpdate );
static void show( const Handle_AIS_InteractiveObject& theObject,