TCustomShellTreeView.CreateNode function

Declaration

function CreateNode: TTreeNode; override

Description

CreateNode is an overridden method used to create an new TTreeNode instance for the shell control. CreateNode calls the inherited method to create the class instance used as the return value for the method.

CreateNode ensures that the tree node is a TShellTreeNode class instance; the class type can be overridden in the OnCreateNodeClass event handler. If the new tree node is not derived from TShellTreeNode, an EShellCtrl exception is raised to indicate the invalid node type.

Errors

Raises an EShellCtrl exception if the new tree node is not derived from TShellTreeNode.

See also

• TShellTreeNode
• EShellCtrl
• TTreeNodeClass
• TCustomTreeView.OnCreateNodeClass