Parameter	Type	Description
box	[input] reference to a Box	The root of the expanded tree.

Dispatch ID: 74

Raised when a user expands a tree of items, whose root is the box passed as an argument. Users are able to expand or collapse a tree of diagram items by clicking on the +/- button on the right of boxes. This button is visible if the Expandable property of a box is set to true.

FlowChart Members
FlowChart Class
FlowChartPro Namespace