~cpp
int ListIndex;
DWORD dwPos = ::GetMessagePos(); 
CPoint point ((int)LOWORD(dwPos), (int)HIWORD(dwPos)); 
CPoint Index = point; 
m_ctrlZoneList.ScreenToClient(&Index); 
ListIndex = m_ctrlZoneList.HitTest(Index); 

~cpp
void CBlockDlg::OnItemchangedList1(NMHDR* pNMHDR, LRESULT* pResult) 
{
	NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
	// TODO: Add your control notification handler code here
	POSITION pos = m_ctrlBlockList.GetFirstSelectedItemPosition();

	int index = m_ctrlBlockList.GetNextSelectedItem(pos);

	char buf[64];
	m_ctrlBlockList.GetItemText(index, 0, buf, 64);
	AfxMessageBox(buf);
	*pResult = 0;
}