CListCtrl中用上下键改变选择项怎么得到选择项的item啊？

Question

我使用KeyDown消息处理函数，可是得不到选择项得item

Answer 1

为什么不响应LVN_ITEMCHANGED呢
pNMListView->iItem即为所选项

Answer 2

可是向列表中添加一行时，也触发了LVN_ITEMCHANGED事件。我需要得是用键盘改变选择一行时触发事件。

Answer 3

在PreTranslateMessage中处理，LVN_ITEMCHANGED中处理不太合适，呵呵
BOOL CQuery3View::PreTranslateMessage(MSG* pMsg) 
{
// TODO: Add your specialized code here and/or call the base class
if (pMsg->hwnd==m_emailList.m_hWnd) 
{
int nItem;
POSITION pos;
HTREEITEM hItem;
hItem = m_emailTree.GetSelectedItem();
CString strSQL;
if (pMsg->message==WM_KEYUP) 
{
switch(pMsg->wParam) 
{
case VK_DOWN:
pos=m_emailList.GetFirstSelectedItemPosition();
while (pos) 
{
nItem=m_emailList.GetNextSelectedItem(pos);
}
if (hItem==m_hRecvBox) 
{
strSQL.Format("select * from recvbox where id=%d",m_emailList.GetItemData(nItem));
ReadContent(&m_adoRecordSet,strSQL);
}
if (hItem==m_hSendBox)
{
strSQL.Format("select * from sendbox where id=%d",m_emailList.GetItemData(nItem));
ReadContent(&m_adoRecordSet,strSQL);
}
if (hItem==m_hRecyBox) 
{
strSQL.Format("select * from recybox where id=%d",m_emailList.GetItemData(nItem));
ReadContent(&m_adoRecyboxRecordSet,strSQL);
}
break;
case VK_UP:
pos=m_emailList.GetFirstSelectedItemPosition();
while (pos) 
{
nItem=m_emailList.GetNextSelectedItem(pos);
}
if (hItem==m_hRecvBox) 
{
strSQL.Format("select * from recvbox where id=%d",m_emailList.GetItemData(nItem));
ReadContent(&m_adoRecordSet,strSQL);
}
if (hItem==m_hSendBox)
{
strSQL.Format("select * from sendbox where id=%d",m_emailList.GetItemData(nItem));
ReadContent(&m_adoRecordSet,strSQL);
}
if (hItem==m_hRecyBox) 
{
strSQL.Format("select * from recybox where id=%d",m_emailList.GetItemData(nItem));
ReadContent(&m_adoRecyboxRecordSet,strSQL);
}
break;
default:
break;
}
}
}
return CFormView::PreTranslateMessage(pMsg);
}

Answer 4

PreTranslateMessage if(pMsg->wParam==VK_UP || pMsg->wParam==VK_DOWN)
{
POSITION pos = m_ctlList.GetFirstSelectedItemPosition();
int index = -1;
if(pos)
{
    index = m_ctlList.GetNextSelectedItem(pos); 
                                ……
}
}