vc++6.0中内存泄漏请教如何释放

[chinalyylj]

CList<lvItem*, lvItem*> listItems;
POSITION listPos;

//Retrieve the selected items
POSITION pos = pDragList->GetFirstSelectedItemPosition(); //iterator for the CListCtrl
while(pos) //so long as we have a valid POSITION, we keep iterating
{
plvitem = new LVITEM; ZeroMemory(plvitem, sizeof(LVITEM));
pItem = new lvItem; //ZeroMemory(pItem, sizeof(lvItem)); //If you use ZeroMemory on the lvItem struct,
pItem->plvi = plvitem;
pItem->plvi->iItem = m_nDragIndex;
pItem->plvi->mask = LVIF_TEXT;
pItem->plvi->pszText = new char; //since this is a pointer
pItem->plvi->cchTextMax = 255;

m_nDragIndex = pDragList->GetNextSelectedItem(pos);

//Get the item
pItem->plvi->iItem = m_nDragIndex; //
pDragList->GetItem(pItem->plvi); //retrieve the information

CString str1,str2;
str1=pItem->sCol1;
str2=pItem->sCol2;
//Save the pointer to the new item in our CList
listItems.AddTail(pItem);
}
if(pDragList == pDropList) //we are reordering the list (moving)
{
//Delete the selected items
pos = pDragList->GetFirstSelectedItemPosition();
while(pos)
{

} //EO while(pos)
} //EO if(pDragList...

//Iterate through the items stored in memory and add them back into the CListCtrl at the
listPos = listItems.GetHeadPosition();
while(listPos)
{


} //EO while(listPos)

// listItems.RemoveAll();
// for(int i = 1; i < listItems.GetCount(); i ++)
// while(pItem!=NULL)
// {
// }
// while (plvitem!=NULL)
// {
// }
delete plvitem;
delete pItem;
listItems.RemoveAll();

Detected memory leaks!
Dumping objects ->
strcore.cpp(118) : {361} normal block at 0x00385A98, 269 bytes long.
Data: < Line> 01 00 00 00 06 00 00 00 00 01 00 00 4C 69 6E 65
strcore.cpp(118) : {360} normal block at 0x003857F8, 269 bytes long.
Data: < SubL> 01 00 00 00 0B 00 00 00 00 01 00 00 53 75 62 4C
D:\DlgTest_new\DlgTestDlg.cpp(351) : {359} normal block at 0x00384538, 12 bytes long.
Data: < W8 X8 Z8 > 90 57 38 00 04 58 38 00 A4 5A 38 00
D:\DlgTest_new\DlgTestDlg.cpp(349) : {358} normal block at 0x00385790, 40 bytes long.
Data: < > 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Object dump complete.


以上用new 分配的内存，我delete 后总是有内存泄漏，请高手指点迷津 谢谢！

[liumenghappy]

你双击内存遗漏信息
如：strcore.cpp(118) : {361} normal block at 0x00385A98, 269 bytes long.
它会帮你找到没有释放内存的地方，然后再delete

[liumenghappy]

另外，如果你更改了指针的指向，那么指针原来指向的堆区就释放不了了

[muzizongheng]

for(int i=0; i<listItems.GetCount(); i++)
{
  delete listItems.GetAt(i);
}

listItems.RemoveAll();

[Hiiishe]

根据你的逻辑在不需要指针所指的对象后要delete并赋空。
new与delete成对。

[stivenjia]

教给你个无敌的方法

HANDLE hHeap = NULL;
SYSTEMINFO tgSysInfo = { 0 };
GetSystemInfo(&tgSysInfo);
hHeap = CreateHeap(0,tgSysInfo.dwPageSize,0);

LPVOID lpPos = HeapAlloc(hHeap,HEAP_ZERO_MEMORY,sizeof(sizeof(LVITEM)));
plvitem = new(lpPos)LVITEM;

lpPos = HeapAlloc(hHeap,HEAP_ZERO_MEMORY,sizeof(sizeof(LVITEM)));
pItem = new(lpPos)lvItem; //ZeroMemory(pItem, sizeof(lvItem))

HeapDestory(hHeap);   //注意最后一定要释放Heap管理器否则内存泄露哦

[贪玩的老鼠]

你是循环分配的内存,
而释放的时候只是释放最后一个,
肯定有内存泄漏.
需要循环是否listItems里分配的内存
for(int i=0; i<listItems.GetCount(); i++)
{

pItem =listItems.GetAt(i);
delete pItem->plvi->pszText
delete pItem->plvi ;
delete pItem;
}

[jyh_baoding]

把对象逐个取出，删掉

[ToperRay]

for(;;)

delete xxx;

[bragi523]

先逐个删掉对象
然后清空

[zhangrenhui]

UP