Convertir un document Word en RTF

Uses
Comobj;

function ConvertDoc2Rtf(Var FileName : string);
var
oWord: OleVariant;
oDoc: OleVariant;
begin
try
oWord := GetActiveOleObject('Word.Application');
except
oWord := CreateOleObject('Word.Application');
end;
oWord.Documents.Open(FileName, EmptyParam, EmptyParam, EmptyParam, EmptyParam,
EmptyParam, EmptyParam, EmptyParam, EmptyParam, EmptyParam);
oDoc := oWord.ActiveDocument;
FileName := ChangeFileExt(FileName, '.rtf');
oDoc.SaveAs(FileName, wdFormatRTF, EmptyParam, EmptyParam, EmptyParam, EmptyParam,
EmptyParam, EmptyParam, EmptyParam, EmptyParam, EmptyParam);
oWord.ActiveDocument.Close(wdDoNotSaveChanges, EmptyParam, EmptyParam);
oWord.Quit(EmptyParam, EmptyParam, EmptyParam);
oDoc := VarNull;
oWord := VarNull;
RichEdit1.Lines.LoadFromFile(FileName);
ShowMessage('Word document has been converted to .rtf');
end;