iveHints()->setDisplayFlagsHint(display_flags);
\endcode

These additions will result in the observer widget shown below:

\image html observer_widget_doc_table_view_push_hints.jpg "Observer Widget With Action Toolbar"

A third action, specified by Qtilities::Core::ObserverHints::ActionSwitchView was also added to our example. When this action is present the user can switch the type of view at runtime. Lastly, observer widgets automatically provide actions to expand or collapse tree structures when the obse