Yeah, but you have to be sneaky about it <g>.
You can look at the PR_RTF_COMPRESSED (0x10090102) tag and parse that. The
codepage and charset are in there in a form something like this:
{\rtf1\ansi\ansicpg1252\fromhtml1 \deff0{\fonttbl
{\f0\fswiss Arial;}
{\f1\fmodern Courier New;}
{\f2\fnil\fcharset2 Symbol;}
{\f3\fmodern\fcharset0 Courier New;}
{\f4\fswiss Arial;}}
{\colortbl\red0\green0\blue0;\red0\green0\blue255;}
\uc1\pard\plain\deftab360 \f0\fs24
{\*\htmltag19 <html xmlns
="urn:schemas-microsoft-com
ffice
ffice"
xmlns:w="urn:schemas-microsoft-com
ffice:word"
xmlns="
http://www.w3.org/TR/REC-html40">}
{\*\htmltag2 \par }
{\*\htmltag2 \par }
{\*\htmltag34 <head>}
{\*\htmltag1 \par }
{\*\htmltag1 \par }
{\*\htmltag161 <meta name=Generator content="Microsoft Word 11 (filtered
medium)">}
{\*\htmltag1 \par }
{\*\htmltag241 <style>}
{\*\htmltag241 \par <!--\par /* Style Definitions */\par p.MsoNormal,
li.MsoNormal, div.MsoNormal\par \tab \{margin:0in;\par \tab
margin-bottom:.0001pt;\par \tab font-size:12.0pt;\par \tab
font-family:"Times New Roman";\}\par a:link, span.MsoHyperlink\par \tab
\{color:blue;\par \tab text-decoration:underline;\}\par a:visited,
span.MsoHyperlinkFollowed\par \tab \{color
urple;\par \tab
text-decoration:underline;\}\par span.EmailStyle17\par \tab
\{mso-style-type
ersonal-compose;\par \tab font-family:Arial;\par \tab
color:windowtext;\}\par @page Section1\par \tab \{size:8.5in 11.0in;\par
\tab margin:1.0in 1.25in 1.0in 1.25in;\}\par div.Section1\par \tab
\{page:Section1;\}\par -->\par }
{\*\htmltag249 </style>}
{\*\htmltag1 \par }
{\*\htmltag1 \par }
{\*\htmltag41 </head>}
{\*\htmltag2 \par }
{\*\htmltag2 \par }
{\*\htmltag50 <body lang=EN-US link=blue vlink=purple>}\htmlrtf \lang1033
\htmlrtf0
{\*\htmltag0 \par }
{\*\htmltag0 \par }
{\*\htmltag96 <div class=Section1>}\htmlrtf {\htmlrtf0
{\*\htmltag0 \par }
{\*\htmltag0 \par }
{\*\htmltag64 <p class=MsoNormal>}\htmlrtf {\htmlrtf0
{\*\htmltag148 <font size=2 face=Arial>}\htmlrtf {\fs20 \f4 \htmlrtf0
{\*\htmltag84 <span style='font-size:10.0pt;\par
font-family:Arial'>}\htmlrtf {\htmlrtf0 test
{\*\htmltag244 <o
>}
{\*\htmltag252 </o
>}
{\*\htmltag92 </span>}\htmlrtf }\htmlrtf0
{\*\htmltag156 </font>}\htmlrtf }\htmlrtf0 \htmlrtf\par}\htmlrtf0
\htmlrtf \par
\htmlrtf0
{\*\htmltag72 </p>}
{\*\htmltag0 \par }
{\*\htmltag0 \par }
{\*\htmltag104 </div>}\htmlrtf }\htmlrtf0
{\*\htmltag0 \par }
{\*\htmltag0 \par }
{\*\htmltag58 </body>}
{\*\htmltag2 \par }
{\*\htmltag2 \par }
{\*\htmltag27 </html>}
{\*\htmltag3 \par }}