Do you meant CHtmlView class (part of MFC from Microsoft) or CHTMLViewer class (something else, possibly this codeproject article:
CHTMLViewer[
^] )?
If you can input it into a CRichedit control, why don't you display it in a CRichedit control as well? That way you wouldn't have to worry about converting it from one character set to another.
Otherwise, you probably need to convert from unicode to UTF-8.
.NET has a class to do this.
For MFC, you can try this:
http://archive.msdn.microsoft.com/UTF8Helpers[
^]
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