HDN_ITEMCHANGING (Windows CE 5.0)
This message notifies a header control parent window the header item attributes are about to change. It is sent in the form of a WM_NOTIFY message.
HDN_ITEMCHANGINGphdr=(HD_NOTIFYFAR*)lParam;
Parameters
- phdr
Pointer to an NMHEADER structure that contains data about the header control and the header item, including the attributes about to change.
Return Values
TRUE prevents the changes. FALSE accepts the changes.
Requirements
OS Versions: Windows CE 1.0 and later.
Header: Commctrl.h.
See Also
Header Controls Notifications | HDM_SETITEM | WM_NOTIFY
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