What is the expand collapse button?
This pattern creates a button that toggles an element as hidden (collapsed) or not hidden (expanded). The element's current state and changes in the element's state are communicated to screen reader users.
How do you collapse a tree in Catia?
When an object is selected in the tree, you can select View >Tree Expansion > Expand Selection . A dialog box opens and prompts you to indicate the number of levels to expand: Note that the dialog box keeps the last selection you made. Select View > Tree Expansion > Collapse All to collapse the tree.
How to expand tree view?
To expand and collapse items in a tree view control, you can use the ExpandItem and CollapseItem actions of a Win32TreeView object that corresponds to the tested tree view, or the Expand and Collapse actions of a Win32TreeViewItem object that provides access to the needed tree view item.