TVN_ITEMCHANGING notification code
Notifies a tree-view control's parent window that item attributes are about to change. This notification code is sent in the form of a WM_NOTIFY message.
TVN_ITEMCHANGING
pnm = (NMTVITEMCHANGE *) lParam;
Parameters
-
lParam
-
Pointer to an NMTVITEMCHANGE structure describing the item that is changing. The uChanged member is set to TVIF_STATE.
Return value
Returns FALSE to accept the change, or TRUE to prevent the change.
Requirements
Requirement | Value |
---|---|
Minimum supported client |
Windows Vista [desktop apps only] |
Minimum supported server |
Windows Server 2008 [desktop apps only] |
Header |
|
Unicode and ANSI names |
TVN_ITEMCHANGINGW (Unicode) and TVN_ITEMCHANGINGA (ANSI) |