Re: CRichEditCtrl contents from RTF file

From:

Hector Santos <sant9442@nospam.gmail.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Tue, 27 Apr 2010 10:20:11 -0400

Message-ID:

<un4NTTh5KHA.2388@TK2MSFTNGP04.phx.gbl>

The problem with the particular code you have is that it doesn't
support reading a RTF file saved as UNI-GARBAGE A.K.A UNICODE.

It appears you need to convert each block read in into multi-byte
array. It works find when the RTF file is not stored in unicode.

JY wrote:

Hi,

I have a Wizard based application, in which I have some property pages. In
one of the pages, I have a CRichEditCtrl, and I try to populate its contents
from a RTF file. The porblem is, it works correctly if the RTF file is small
(about 4-5 KB), but when I use a larger file, its contents either don't
display at all, or gets truncated.

The code is shown below. What can I do to show the entire contents of the
RTF file in the control? Also, it should work for all languages - I have
UNICODE defined in the project. m_RECtrl is the rich edit control.

static DWORD CALLBACK MyStreamInCallback(DWORD dwCookie, LPBYTE pbBuff, LONG
cb, LONG *pcb)
{
   CFile* pFile = (CFile*)(DWORD_PTR)dwCookie;
   *pcb = pFile->Read(pbBuff, cb);

   return 0;
}

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

    if (m_strRTFFilePath.GetLength())
    {
        m_RECtrl.ShowScrollBar(SB_VERT, TRUE);
        CFile eulaFile(m_strRTFFilePath, CFile::modeRead);
        EDITSTREAM es;

        es.dwCookie = (DWORD_PTR)&eulaFile;
        es.pfnCallback = (EDITSTREAMCALLBACK)MyStreamInCallback;
        m_RECtrl.StreamIn(SF_RTF, es);
    }

    return TRUE;
}

int CREPage::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
    if (CBasePage::OnCreate(lpCreateStruct) == -1)
        return -1;

    CRect rect;
    GetClientRect(&rect);
    rect.bottom -= 25;

    m_RECtrl.Create(WS_CHILD | WS_VISIBLE | WS_VSCROLL | ES_MULTILINE, rect,
this, IDC_RICHEDIT_EULA);
    m_RECtrl.SetOptions(ECOOP_OR, ECO_AUTOVSCROLL | ECO_AUTOHSCROLL |
ECO_READONLY);
    m_RECtrl.ModifyStyleEx(0, WS_EX_CLIENTEDGE, SWP_FRAMECHANGED);

    return 0;
}

TIA,
JY

--
HLS