+ // Hide all the displayed objects in the preview view
+ OCCViewer_Viewer* aViewer = myPreviewViewManager->getOCCViewer();
+ if ( aViewer ) {
+ size_t aViewId = (size_t)aViewer;
+ HYDROData_Iterator anIterator( doc() );
+ for( ; anIterator.More(); anIterator.Next() ) {
+ Handle(HYDROData_Entity) anObject = anIterator.Current();
+ if( !anObject.IsNull() ) {
+ module()->setObjectVisible( aViewId, anObject, false );
+ }
+ }
+ }
+