这段代码有内存泄漏,怎么改？

[st291]

			CDC* pDC = GetWindowDC();
			CRect rt;
	GetWindowRect(&rt);
	int index1=0,index2=0,index3=0,index4=0;
	if(BmpIndex)
	{
		if(BI==close)
			index1=BmpIndex;
		if(BI==max)
			index2=BmpIndex;
		if(BI==min)
			index3=BmpIndex;
		if(BI==set)
			index4=BmpIndex;
	}
	

		CBitmap* pBitmap = new CBitmap;//这行泄漏
		CBitmap* pOldBitmap;
		CDC* pDisplayMemDC=new CDC;//这行泄漏
		pBitmap->LoadBitmap(close_state);
		pDisplayMemDC->CreateCompatibleDC(pDC);	
	
		pOldBitmap=(CBitmap*)pDisplayMemDC->SelectObject(pBitmap);
		pDC->BitBlt(rt.Width()-40,5, 36, 17, pDisplayMemDC, index1*36, 0, SRCCOPY);
		pDisplayMemDC->SelectObject(pOldBitmap);
	 	pBitmap->DeleteObject();
	 	pBitmap->Detach();

		pBitmap->LoadBitmap(max_state);
		pOldBitmap=(CBitmap*)pDisplayMemDC->SelectObject(pBitmap);
		pDC->BitBlt(rt.Width()-40-26, 5, 26, 17, pDisplayMemDC, index2*26, 0, SRCCOPY);
		pDisplayMemDC->SelectObject(pOldBitmap);
	 	pBitmap->DeleteObject();
	 	pBitmap->Detach();
	
		pBitmap->LoadBitmap(min_state);
		pOldBitmap=(CBitmap*)pDisplayMemDC->SelectObject(pBitmap);
		pDC->BitBlt(rt.Width()-40-26-26, 5, 26, 17, pDisplayMemDC, index3*26, 0, SRCCOPY);
		pDisplayMemDC->SelectObject(pOldBitmap);
	 	pBitmap->DeleteObject();
	 	pBitmap->Detach(); 

		pBitmap->LoadBitmap(set_state);
		pOldBitmap=(CBitmap*)pDisplayMemDC->SelectObject(pBitmap);
		pDC->BitBlt(rt.Width()-40-26-26-27, 5, 27, 17, pDisplayMemDC, index4*27,0 , SRCCOPY);
		pDisplayMemDC->SelectObject(pOldBitmap);
	 	pBitmap->DeleteObject();
	 	pBitmap->Detach(); 

		ReleaseDC(pDisplayMemDC);
		delete pDisplayMemDC;
		delete pBitmap;   
		ReleaseDC(pDC);	

[快乐鹦鹉]

你不用new不就行了么。这里根本不需要new啊

[st291]

试试去

[st291]

我改成 CBitmap pBitmap ; 并且删除了 delete pBitmap; 还是有啊！
到底少那那步啊

[pady_pady]

ReleaseDC(pDisplayMemDC);
改为DeleteDC(pDisplayMemDC);

[一线coder]

CBitmap* pBitmap = new CBitmap;//这行泄漏
CBitmap* pOldBitmap;
CDC* pDisplayMemDC=new CDC;//这行泄漏
直接改成
CBitmap pBitmap
CBitmap pOldBitmap;
CDC pDisplayMemDC;
MFC已经使用类封装了这些对象，直接创建对象就行了，程序退出后，会自动调用类的虚构函数，会自动释放对象