Tree Control Notification Messages
A tree control () sends the following notification messages as WM_NOTIFY messages:
| Notification message | Description |
| TVN_BEGINDRAG | Signals the start of a drag-and-drop operation |
| TVN_BEGINLABELEDIT | Signals the start of in-place label editing |
| TVN_BEGINRDRAG | Signals the start of a drag-and-drop operation, using the right mouse button |
| TVN_DELETEITEM | Signals the deletion of a specific item |
| TVN_ENDLABELEDIT | Signals the end of label editing |
| TVN_GETDISPINFO | Requests information that the tree control requires to display an item |
| TVN_ITEMEXPANDED | Signals that a parent item's list of child items was expanded or collapsed |
| TVN_ITEMEXPANDING | Signals that a parent item's list of child items is about to be expanded or collapsed |
| TVN_KEYDOWN | Signals a keyboard event |
| TVN_SELCHANGED | Signals that the selection has changed from one item to another |
| TVN_SELCHANGING | Signals that the selection is about to be changed from one item to another |
| TVN_SETDISPINFO | Notification to update the information maintained for an item |