Version: 2019.1 (switch to 2018.3 or 2017.4)
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TreeView.SetExpandedRecursive

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public void SetExpandedRecursive(int id, bool expanded);

Parameters

idTreeViewItem ID.
expandedExpanded state: true expands, false collapses.

Description

Expand or collapse all items under item with id.

This is also used internally when Alt/Option + clicking an foldout arrow of an item to expand/collapse the entire sub-tree under this item.

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Copyright © 2019 Unity Technologies. Publication: 2019.1-002V. Built: 2019-04-15.
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