XML validator (checks whether given xml is correct or broken)

#import <msxml4.dll>
using namespace MSXML2;

CString SchemaValidator::validateFile(CString file)
{
	// Initialize objects and variables.
	
	IXMLDOMDocument2Ptr pXMLDoc = NULL;
	MSXML2::IXMLDOMParseErrorPtr pError = NULL;
	_bstr_t strFile = (LPCTSTR)file;
	
	// Create a DOMDocument and set its properties.
	
	pXMLDoc.CreateInstance(__uuidof(DOMDocument40));
	pXMLDoc->async = VARIANT_FALSE;
	pXMLDoc->validateOnParse = VARIANT_TRUE;
	pXMLDoc->resolveExternals = VARIANT_TRUE;
	
	// Load and validate the specified file into the DOM.
	
	pXMLDoc->load(strFile);
	pError = pXMLDoc->parseError;
	
	// Return validation results
	
	if (pError->errorCode != S_OK)
	{
		CString res;
		res.Format("Reason: %s, Line: %d \"%s\"", (char *)pError->Getreason(), pError->Getline(), (char *)pError->GetsrcText());
		res.Replace("\r\n", "");
		return res;
	}
	else
		return CString();
}
</msxml4.dll>