COM

//------------------------//
// Convert BSTR to char * //
//------------------------//
inline char* ConvertBSTRToString(BSTR pSrc)
{
	if(!pSrc) return NULL;
	
	DWORD cb,cwch = ::SysStringLen(pSrc);//convert even embeded NULL
	
	char *szOut = NULL;
	
	if(cb = ::WideCharToMultiByte(CP_ACP, 0, pSrc, cwch + 1, NULL, 0, 0, 0))
	{
		szOut = new char[cb];
		if(szOut)
		{
			szOut[cb - 1]  = '\0';
			
			if(!::WideCharToMultiByte(CP_ACP, 0, pSrc, cwch + 1, szOut, cb, 0, 0))
			{
				delete []szOut;//clean up if failed;
				szOut = NULL;
			}
		}
	}

	return szOut;
};

<br />
_ATL_MIN_CRT and Link Error "unresolved external symbol _main"<br />
--------------------------------------------------------------<br />
<br />
When you build a Release version of an ATL project, you can get the<br />
following link error:<br />
<br />
   LIBCMT.LIB(crt0.obj) : error LNK2001: unresolved external symbol _main<br />
<br />
This error occurs if you are using CRT functions that require CRT startup<br />
code. The Release configurations define _ATL_MIN_CRT, which excludes CRT<br />
startup code from your EXE or DLL. To avoid this error, do one of the<br />
following:<br />
<br />
 - Remove _ATL_MIN_CRT from the list of preprocessor defines to allow CRT<br />
   startup code to be included. On the Build menu, click Settings. Hold<br />
   the ctrl key while selecting all Release configurations. On the C/C++<br />
   tab, choose the General category, then remove _ATL_MIN_CRT from the<br />
   preprocessor definitions edit box.<br />
<br />
 - If possible, remove calls to CRT functions that require CRT startup<br />
   code. Instead, use their Win32 equivalents. For example, use lstrcmp()<br />
   instead of strcmp(). Known functions that require CRT startup code are<br />
   some of the string and floating point functions.<br />

IHTMLElementCollection *pEnum;

pDoc->get_all(&pEnum);
if(pEnum)
{
    ::IHTMLElement *pelem;
                try
                {
        pelem = pEnum->item((long)0);
                }catch(...){};
    if(pelem)
    {
        BSTR wsHTML;
        pelem->get_outerHTML(&wsHTML);
    }
}