treeview AlwaysFullExpand property
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Applies to
acTreeView component.  

Declaration
property AlwaysFullExpand: Boolean; // False by default  

Description
The AlwaysFullExpand property specifies whether ALL nodes which have sub-nodes (child nodes) should be ALWAYS expanded, and whether they CAN or CAN'T be collapsed by mouse click.  
 
Set AlwaysFullExpand to True, and all nodes will be always expanded to display their child nodes.  

See also
AlwaysExpandRoot and AutoExpand properties.