TTreeView.OnCreateNodeClass property
Event handler signalled to get the class reference used to create new tree nodes.
Declaration
property OnCreateNodeClass:;Description
OnCreateNodeClass is signalled (when assigned) when the CreateNode
method is executed for the tree view control.
OnCreateNodeClass occurs after the OnCustomCreateItem event handler has been signalled to get a TTreeNode for the purpose. If its return value is Nil, DoCreateNodeClass is called to signal OnCreateNodeClass. It is not signalled if a return value was assigned in the OnCustomCreateItem handler routine.
Sender contains the tree view control for the event handler.
NodeClass is used to return the class reference needed to create a new node for the control.
A new instance of the class type is created and added to the node collection in Items.
This description is the one of ComCtrls.TCustomTreeView.OnCreateNodeClass.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.