Re: CRichEditCtrl contents from RTF file

From:

=?Utf-8?B?Slk=?= <sd@nospamgroup.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Tue, 27 Apr 2010 08:20:06 -0700

Message-ID:

<0121C4C8-C099-4886-B3C5-55C6D21394AB@microsoft.com>

Hi Joe,

I've taken some snippets from what you'd posted and I still have the same
problem as earlier. Only a truncated portion of the file appears in the
CRichEditCtrl. Here's my latest code:

class StreamInCookie
{
public:
    CFile *file;
    DWORD_PTR remaining;
    DWORD err;
};

static DWORD CALLBACK EULAStreamInCallback(DWORD_PTR dwCookie, LPBYTE
pbBuff, LONG cb, LONG *pcb)
{
    StreamInCookie * streamIn = (StreamInCookie *)dwCookie;
    if(streamIn->remaining == 0)
    {
        *pcb = 0;
        streamIn->err = ERROR_SUCCESS;
        return 1; // nonzero value terminates read
    }

    DWORD bytesToRead = min(streamIn->remaining, (DWORD)cb);

    UINT bytesRead;
    try
    {
        bytesRead = streamIn->file->Read(pbBuff, bytesToRead);
    }
    catch(CFileException * e)
    {
        streamIn->err = e->m_lOsError;
        e->Delete();
        streamIn->remaining = 0;
        return 1;
    }

    if(bytesRead == 0)
    {
        streamIn->err = ::GetLastError();
        *pcb = 0;
        return 1; // return nonzero to stop operation
    }

    streamIn->remaining -= bytesRead;
    *pcb = bytesRead;
    streamIn->err = ERROR_SUCCESS;
    return 0;
}

BOOL CREPage::OnInitDialog()
{
    CBasePage::OnInitDialog();

    if (m_strRTFFilePath.GetLength())
    {
        m_RECtrl.ShowScrollBar(SB_VERT, TRUE);

        try
        {
            StreamInCookie streamIn;
            CFile eulaFile(m_strRTFFilePath, CFile::modeRead|CFile::shareExclusive);
            streamIn.file = &eulaFile;

            EDITSTREAM es;
            es.dwCookie = (DWORD_PTR)&streamIn;
            es.pfnCallback = (EDITSTREAMCALLBACK)EULAStreamInCallback;
            m_RECtrl.StreamIn(SF_RTF, es);
        }
        catch (CFileException *pEx)
        {
            //not shown for brevity
        }
    }

    return TRUE;
}

Thanks,
JY