UFT Pro (LeanFT) .NET SDK Reference, Version 14.03
ForceExpandWithDoubleClick Property
When set to true, the Expand or Collapse operation uses a double click.
The default behavior for the tree is to first try to use a single click. If the node is not expanded with a click it will try to use double click. Setting this property will improve performance when dealing with deep paths.
public bool ForceExpandWithDoubleClick {get; set;}