+ Handle(AIS_Trihedron) aTrihedron = trihedron();
+ Handle(AIS_InteractiveContext) anAISContext = getAISContext();
+ if ( !anAISContext.IsNull() && !aTrihedron.IsNull() )
+ {
+ viewer()->setTrihedronShown( false );
+ anAISContext->Display( aTrihedron );
+ anAISContext->Deactivate( aTrihedron );
+ }
+ }
+