Contents Index Topic Contents
	Previous Topic: TVN_SELCHANGED Next Topic: TVN_SETDISPINFO

TVN_SELCHANGING

TVN_SELCHANGING 
    pnmtv = (LPNMTREEVIEW) lParam 

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.

• Returns TRUE to prevent the selection from changing.

pnmtv

Address of an NMTREEVIEW 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.

---

 Top of Page
© 1997 Microsoft Corporation. All rights reserved. Terms of Use.