Listctrl中LVN_ITEMCHANGED 消息问题

[socrazylee]

为什么listctrl控件的LVN_ITEMCHANGED消息没法响应啊 我是MFC对话框程序 我新建了个简单的试验程序都没法响应

哪位清楚的请指点下，路过的请顶下

谢谢

[phoenix96_2000]

void CDialogXXX::OnItemchangedList(NMHDR* pNMHDR, LRESULT* pResult)
{
NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;

UINT uOldState = pNMListView->uOldState;
UINT uNewState = pNMListView->uNewState;

if( pNMListView->iItem != -1)
{
// selection activate
if( !(uOldState & LVIS_SELECTED) && (uNewState & LVIS_SELECTED) )
{
MessageBox("item selected");
}

//selection deactivated
if( (uOldState & LVIS_SELECTED) && !(uNewState & LVIS_SELECTED) )
{
MessageBox("item deselected");
}
}

*pResult = 0;
}