TCustomShellTreeView.PopulateTreeNodeWithFiles function

Declaration

function PopulateTreeNodeWithFiles(ANode: TTreeNode; ANodePath: string)
: Boolean

Description

PopulateTreeNodeWithFiles is a Boolean function used to fill the Items property with the file system objects for a given tree node. ANode contains the initial tree node examined in the method. ANodePath contains the path on the local file system to the tree node in ANode. The return value is True if at least one node was added to Items in the method.

No actions are performed in the method at design-time, and the return value is set to False.

PopulateTreeNodeWithFiles fills a list with TFileItem instances for file system objects matching the ObjectTypes for the shell control. DoAddItem is called for each TFileItem instance, which signals the OnAddItem event handler (when assigned). The event handler is used to selectively filter file system objects added to the Items in the control. If the TAddItemEvent handler sets its CanAdd argument to False, the file system object is not added to Items.

On exit, Items contains the TShellTreeNode instances where ANode is the parent. If an entry is a directory which has sub-directories, its HasChildren property is set to True.

PopulateTreeNodeWithFiles is used in the implementation of the PopulateWithBaseFiles and CanExpand methods in TCustomShellTreeView.

See also

• ObjectTypes
• Items
• DoAddItem
• CanExpand
• PopulateWithBaseFiles
• TShellTreeNode