CRichEditCtrl加载 rtf 字符串显示图片内存如何释放

[lesgo]

加载包含很多图片的rtf数据时，内存占用很高，使用如下方法释放内存有问题
1.SetWindowText(_T("")),可以释放内存，但在有些系统下会直接崩溃退出
2.释放不了内存

HRESULT hr = 0;
	IRichEditOle *pRichEditOle = GetIRichEditOle();
	if( pRichEditOle == NULL )
	{
		return;
	}
	long lCount = pRichEditOle->GetObjectCount();
	for (long i = 0; i < lCount; i++)
	{
		REOBJECT* preObj=new REOBJECT;
		ZeroMemory(preObj, sizeof(REOBJECT));
		preObj->cbStruct  = sizeof(REOBJECT);
		hr =pRichEditOle->GetObject(i,preObj,REO_GETOBJ_POLEOBJ);
		if(SUCCEEDED(hr))
		{
			if (preObj->dwFlags && REO_INPLACEACTIVE)
			{
				if(preObj->dwFlags&&REO_OPEN)
				{					
					hr=preObj->poleobj->Close(OLECLOSE_NOSAVE);
				}
			}
			preObj->poleobj->Release();			
			delete *&preObj;
			preObj=NULL;			
		}
	}
	pRichEditOle->Release();
	SetSel(0,-1);  
	Clear();

部分源代码：

DWORD CALLBACK CNewRichEdit::EditStreamCallback(DWORD dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb)
{
	char** pBuffer = (char**)dwCookie;  
	long lBufferSize = strlen(*pBuffer);  

	if (lBufferSize < cb)  
	{  
		*pcb = lBufferSize;  
		memcpy(pbBuff, *pBuffer, lBufferSize);  
	}  
	else  
	{  
		*pcb = cb;  
		memcpy(pbBuff, *pBuffer, cb);  
		*pBuffer += cb;  
	}  
	return 0; 
}
long CNewRichEdit::StreamInFromMemFile(char* pcRtf)
{
	CString sRtf(pcRtf);
	EDITSTREAM es;  
	char* pBuffer = NULL;  
	char* pTmp2;  
	char** pTmp;  
	long lBufferSize;  

	lBufferSize = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, sRtf, -1, NULL, 0, NULL, NULL);  
	pBuffer = new char[lBufferSize + 1];  
	WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, sRtf, -1, pBuffer, lBufferSize + 1, NULL, NULL);  

	pTmp2 = pBuffer;  
	pTmp = &pTmp2;  
	es.dwError = 0;  
	es.pfnCallback = EditStreamCallback;  
	es.dwCookie = (DWORD)pTmp;  
	CRichEditCtrl::StreamIn(SF_RTF|SFF_SELECTION, es); 
	pTmp = NULL;  
	delete[] pBuffer;  	
	return 0;
}

[allenhiman]

setwindowtext会崩溃啊？为毛？ 试试销毁这个edit 然后再创建一个

[lesgo]

可能是没释放干净，在2008系统下，setwindowtext就出现崩溃了

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