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TVN_SELCHANGING Overview  Group

The TVN_SELCHANGING notification message notifies a tree-view control’s parent window that the selection is about to change from one item to another. This notification message is sent in the form of a WM_NOTIFY message. 

TVN_SELCHANGING 

pnmtv = (NM_TREEVIEW FAR *) lParam 

 

Parameters

pnmtv
Pointer to an NM_TREEVIEW structure. The itemOld and itemNew members contain valid information about the currently selected item and the newly selected item. The action member indicates whether a mouse or keyboard action is causing the selection to change. For a list of possible values, see the description of the TVN_SELCHANGED notification message.

Return Values

Returns TRUE to prevent the selection from changing.

See Also

NM_TREEVIEW, TVN_SELCHANGED, WM_NOTIFY 

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