If the folder tree has focus, expand either the currently selected branch or the optionally specified branch of the folder tree such that all of it’s children are displayed. If the item list has focus, expand all entries in a hierarchically displayed list such that all entries (including non-root items) are showing. This applies to lists viewed by discussion thread and tasklists that contain subtasks.
BFTKN_EXPAND_ALL or 1045
VOID ExpandAll(
[ANSISTRING] FolderName)
(Optional) The full path of the folder in the folder tree whose children should be collapsed. Note that this parameter is ignored if the token is thrown at the item list.