+ if (myData->isValid() && myData != myData->invalidPtr())
+ myData->erase();
+ setData(myData->invalidPtr());
+}
+
+bool ModelAPI_Object::isDisplayed()
+{
+ return myData->isDisplayed();
+}
+
+void ModelAPI_Object::setDisplayed(const bool theDisplay)
+{
+ myData->setDisplayed(theDisplay);