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TVN_ITEMEXPANDED notification code

  • Article

Notifies a tree-view control's parent window that a parent item's list of child items has expanded or collapsed. This notification code is sent in the form of a WM_NOTIFY message.

TVN_ITEMEXPANDED 

    pnmtv = (LPNMTREEVIEW) lParam

Parameters

lParam

Pointer to an NMTREEVIEW structure. The itemNew member is a TVITEM structure that contains valid information about the parent item in the hItem, state, and lParam members. The action member indicates whether the list expanded or collapsed. For a list of possible values, see the description of the TVM_EXPAND message.

Return value

The return value is ignored.

Requirements

Requirement Value
Minimum supported client
 Windows Vista [desktop apps only]
Minimum supported server
 Windows Server 2003 [desktop apps only]
Header
Commctrl.h
Unicode and ANSI names
 TVN_ITEMEXPANDEDW (Unicode) and TVN_ITEMEXPANDEDA (ANSI)

See also

TVN_ITEMEXPANDING