Enumerate installed patches for a given product using MSI API

Enumerate installed patches for a given product using MSI API EnumerateinstalledpatchesforagivenproductusingMSIAPI Enumerate installed patches for a given product using MSI API [C++] Yan Michalevsky /PreviewSnippet.aspx?SnippetID=1415c971-3b4b-4e1a-9880-a2eaaa090599 SurroundsWith

* patchesList)
{
	UINT retval;
	UINT patchIndex = 0;
	TCHAR patchGuidBuffer[MAX_PRODUCT_CODE_LEN] = _T("");
	TCHAR transformsBuff[100] = _T("");
	DWORD transformsBuffSize = sizeof(transformsBuff)/sizeof(transformsBuff[0]);
	
	do {
		memset(patchGuidBuffer, 0, sizeof(patchGuidBuffer));
		memset(transformsBuff, 0, sizeof(transformsBuff));
		transformsBuffSize = sizeof(transformsBuff)/sizeof(transformsBuff[0]);
		
		retval = MsiEnumPatches(productCode, patchIndex, patchGuidBuffer,
  				          transformsBuff, &transformsBuffSize);
		if (ERROR_SUCCESS == retval) {
			patchesList->AddTail(CString(patchGuidBuffer));
			++patchIndex;
		}
	} while (ERROR_SUCCESS == retval);
} //end of getInstalledPatchesList]]>