怎样用SendMessage发送LVN_COLUMNCLICK消息？

BOOL ClickListColumn(CListCtrl& listCtrl, int index)
{
        if(index >= listCtrl.GetHeaderCtrl()->GetItemCount())
            return FALSE;

        NM_LISTVIEW nmListView;
        memset(&nmListView, 0, sizeof(nmListView));
        nmListView.iItem = -1;//NOT USED IN HERE
        nmListView.iSubItem = index;//INDEX VALUE
        nmListView.hdr.hwndFrom = listCtrl.GetSafeHwnd();
        nmListView.hdr.idFrom = listCtrl.GetDlgCtrlID();
        nmListView.hdr.code = LVN_COLUMNCLICK;

        return SendMessage(WM_NOTIFY, listCtrl.GetDlgCtrlID(), (LPARAM)&nmListView);
}