Observer Widget Handling Context Activity Policy"

The Qtilities::Core::ActivityPolicyFilter class also provides other activity management options which allows control over the activity of subjects within an observer context. It is up to the reader to explore the other activity control options.

\subsection controlling_displayed_columns Control over displayed columns

The Qtilities::Core::ObserverHints::ItemViewColumn hint provides control over pre-defined columns that can be shown in the observer widget. L