TreeView for UMG - Events

Event	When It Runs	Typical Use
On Generate Row	When the tree creates a visible row.	Fill your custom row widget with text, icons, and state.
On Selection Changed	When the selected row changes.	Show details for the selected item, open a panel, or update controls.
On Expansion Changed	When a node opens or closes.	Save expanded state or change the row visuals.
On Get Children	When the tree asks for a row's children.	Inspect parent-child relationships while debugging or updating dynamic trees.

Event	When It Runs	Typical Use
On Generate Row	When the tree creates a visible row.	Fill your custom row widget with text, icons, and state.
On Selection Changed	When the selected row changes.	Show details for the selected item, open a panel, or update controls.
On Expansion Changed	When a node opens or closes.	Save expanded state or change the row visuals.
On Get Children	When the tree asks for a row's children.	Inspect parent-child relationships while debugging or updating dynamic trees.