HDN_FILTERCHANGE notification code
Notifies the header control's parent window that the attributes of a header control filter are being changed or edited. This notification code sent in the form of a WM_NOTIFY message.
HDN_FILTERCHANGE pNMHeader = (LPNMHEADER) lParam;
A pointer to an NMHEADER structure that contains information about the header control and the header item, including the attributes that are about to change.
No return value.
|Minimum supported client
||Windows Vista [desktop apps only]
|Minimum supported server
||Windows Server 2003 [desktop apps only]