The TVN_ITEMEXPANDED notification message notifies a tree-view controlís parent window that a parent itemís list of child items has expanded or collapsed. This notification message is sent in the form of a WM_NOTIFY message.
TVN_ITEMEXPANDED pnmtv = (NM_TREEVIEW FAR *) lParam
No return value.
NM_TREEVIEW, TV_ITEM, TVM_EXPAND, WM_NOTIFY
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