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TVN_BEGINLABELEDIT

TVN_BEGINLABELEDIT 
    ptvdi = (LPNMTVDISPINFO) lParam 

Notifies a tree view control's parent window about the start of label editing for an item. This notification message is sent in the form of a WM_NOTIFY message.

• Returns TRUE to cancel label editing.

ptvdi

Address of an NMTVDISPINFO structure. The item member is a TVITEM structure that contains valid information about the item being edited in the hItem, state, lParam, and pszText members.

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