Convert unicode string into ascii text with numeric character references

[Leif Simon Goodwin]

We have some old code which creates an XML document tree, using IXMLDocument and related interfaces. Anyway, some code creates a text node and we pass in text such as "5.0 £" or "2.5 €". The currency characters are non ASCII and are not valid in an XMl text node. For example this is invalid: 2.5 € It needs to be translated as follows: 2.5 &#euro; I can process the string e.g. "2.5 €" replacing each non ASCII character with a numeric character reference, and then create the XML text node. Is there a better way to convert the CString content to XML compliant text? I cannot find anything in Microsoft code. (As far as I can see Xerces would handle this but we do not use Xerces.)