Problem in Auto detecting Codepage

Hi,

I am trying to Auto Detect the codepage for a txt file (containing
English and other language characters as well).
The txt file is saved in UTF-8 format.
For this i tried using IMultiLanguage2::DetectInputCodepage using
MLDETECTCP_NONE.

In this, i am facing a problem that for certain files it is able to
detect the actual codepage wheras for others it simply return English
Codepage as output.

Here is the relevant piece of code that i am using (CoCreateInstace
being already done).

                if(S_OK ==
mycodePageRecognizer.GetIMultiLanguage2(&pMultiLanguage2))
                {
                    XInterface<IMultiLanguage2> xMultiLanguage2;
                    xMultiLanguage2.Set(pMultiLanguage2);
                    pMultiLanguage2 = 0;

                    INT pcSrcSize = myserialStream.GetNewFileSize();
                    DetectEncodingInfo myEncodings[1];
                    INT cEncodings = sizeof(myEncodings) /
sizeof(DetectEncodingInfo);

                    HRESULT hr =
xMultiLanguage2.GetPointer()->DetectInputCodepage(MLDETECTCP_NONE, 0,
pSrcStr, &pSrcSize, myEncodings, &cEncodings);

                    if (SUCCEEDED(hr) && cEncodings > 0)
                    {
                        myulCodePage = myEncodings[0].nCodePage;
                    }
                }

Taking an example, if i am having a text file with English and Japanese

characters, it worked fine if the file consisted of 199 character but
was not working for 200+ characters.
On increasing it to around 250 it again started working fine (Returned
the correct codepage).
I know it is not having any co-relation with the size but still giving
it as an example.

**** Again i am telling that the file is saved in UTF-8 format (Also it

worked fine for any number of characters if saved in UTF_16 BE or LE
formats).

Please help me in finding where exactly am i going wrong.

Thanks and Regards,
Shreshth Luthra