TreeView.addOnBeforeCollapse

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TreeView.addOnBeforeCollapse

Assigns a delegate to the beforeCollapse event.

Syntax

public void addOnBeforeCollapse( TreeViewCancelEventHandler value )

Parameters

value

The TreeViewCancelEventHandler delegate to be notified when the event occurs.

Remarks

Passing an event handler as a parameter to this method is equivalent to setting the beforeCollapse event to that method in the Properties window. The beforeCollapse event occurs when a tree node is about to be collapsed. If the event handler cancels this event, the node will not be collapsed.

See Also   removeOnBeforeCollapse