可用分太少请见谅！求教：为什么删除不了？（附代码）

[loopyifly]

CPtrList m_CList;

BOOL FriendList::Delete(CString strFNum)
{
FriendInformation *pConfig;
POSITION pos=m_CList.GetHeadPosition();

while(pos != NULL)
{
pConfig=(FriendInformation*)m_CList.GetNext(pos);
if((strcmp(pConfig->szFVNum , strFNum)) == 0)
{
// m_CList.RemoveAt(pos-1);
delete pConfig; //*****
return TRUE;
}
}

return FALSE;
}

该函数是从内存链表中删除一个节点，当在debug版下可以正确删除，在release版下没有正确删除

在用以下函数显示时，release版删除的节点又出现了， 但debug版删除的没有显示

BOOL FriendList::GetData(BYTE byGroupID)
{
if(ISEmpty())
return FALSE;

POSITION pos=m_CList.GetHeadPosition();

while(pos!=NULL)
{
pConfig=(FriendInformation*)m_CList.GetNext(pos);
if(pConfig->byFGroupID == byGroupID)
m_VMAddressList.DisplayGroupFriend(pConfig); /*显示在界面上*/

}
return TRUE;
}

[widewave]

POSITION pos1, pos2;
FriendInformation *pConfig;
FriendInformation *pConfigDel;

for( pos1 = m_CList.GetHeadPosition(); ( pos2 = pos1 ) != NULL; )
{
pConfig = (FriendInformation*)m_CList.GetNext(pos);
if((strcmp(pConfig->szFVNum , strFNum)) == 0)
{
pConfigDel = (FriendInformation*)m_CList.GetAt( pos2 ); // Save the old pointer for
//deletion.
m_CList.RemoveAt( pos2 );
delete pConfigDel; // Deletion avoids memory leak.
}
}

[Panr]

如果频繁地处理个别的POSITION 的话，建议别用GetHeadPosition/GetNext，可以这样写：

class FriendInformation;
typedef CTypedPtrList<CPtrList, FriendInformation*> CInformationList;


static bool CInformationListHelper__Delete (CInformationList *plistData, CString strFNum)
{
if (NULL==plistData || strFNum.IsEmpty())
return false;

for (int nIndex=plistData->GetCount()-1; nIndex>=0; nIndex--)
{
POSITION posHot = plistData->FindIndex (nIndex);
FriendInformation *pdataHot = plistData->GetAt (posHot);
ASSERT (NULL != pdataHot);

if((strcmp(pConfig->szFVNum , strFNum)) == 0)
{
plistData->RemoveAt (posHot);
delete pdataHot;
return true;
}
}
return false;
}

[loopyifly]

多谢楼上两位
问题解决，散分