| id | Hierarchy item identifier. |
| outChildren | List filled with item child identifiers as a result of a method call. |
Retrieves a list of hierarchy item children.
The result is written to outChildren list which is resized if necessary.
The list contains identifiers of item children in order defined by sorting parameters.
Identifier defines a specific tree view item in the current frame hierarchy. Different frames have different identifiers for the tree items.
GetItemChildren call builds next hierarchy level making child data available for retrieval.
Additional resources: TreeViewItem.children.