 Qtilities::Core::ObserverDotWriter.

\subsection tree_categorized_leafs Tree with categorized leafs

An important feature of a tree node is that is can group child items into categories where a category icon will automatically be assigned to category nodes. This functionality is controlled by the Qtilities::CoreGui::TreeNode::enableCategorizedDisplay() function. The first tree is a simple tree which uses this feature to group items into different categories. The advantage of the categorized approach is tha