C++ wxDataObject类代码示例

STDMETHODIMP wxIDataObject::EnumFormatEtc(DWORD dwDir,
                                          IEnumFORMATETC **ppenumFormatEtc)
{
    wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::EnumFormatEtc"));

    wxDataObject::Direction dir = dwDir == DATADIR_GET ? wxDataObject::Get
                                                       : wxDataObject::Set;

    // format count is total of user specified and system formats.
    const size_t ourFormatCount = m_pDataObject->GetFormatCount(dir);
    const size_t sysFormatCount = m_systemData.size();

    const ULONG
        nFormatCount = wx_truncate_cast(ULONG, ourFormatCount + sysFormatCount);

    // fill format array with formats ...
    wxScopedArray<wxDataFormat> formats(nFormatCount);

    // ... from content data (supported formats)
    m_pDataObject->GetAllFormats(formats.get(), dir);

    // ... from system data
    for ( size_t j = 0; j < sysFormatCount; j++ )
    {
        SystemDataEntry* entry = m_systemData[j];
        wxDataFormat& format = formats[ourFormatCount + j];
        format = entry->pformatetc->cfFormat;
    }

    wxIEnumFORMATETC *pEnum = new wxIEnumFORMATETC(formats.get(), nFormatCount);
    pEnum->AddRef();
    *ppenumFormatEtc = pEnum;

    return S_OK;
}

// get the data for a specific wxDataFormat that stored as a property in Root window
void GetClipboardData(Display* disp, Window win, wxDataObject &data, wxDataFormat dfFormat)
{
    unsigned char *clipbrdData = NULL;

    // some variables that used to get the data in window property
    unsigned long len;

    switch ( dfFormat )
    {
        case wxDF_INVALID:
        {
            return;
        }
        case wxDF_BITMAP:
        {
            wxVector<Atom> atomVector;
            atomVector.push_back(XA_IMAGE_BMP);
            atomVector.push_back(XA_IMAGE_JPG);
            atomVector.push_back(XA_IMAGE_TIFF);
            atomVector.push_back(XA_IMAGE_PNG);

            // check the four atoms in clipboard, try to find whether there has data
            // stored in one of these atom.
            for ( unsigned i = 0; i < atomVector.size(); i++ )
            {

                clipbrdData  = GetClipboardDataByFormat(disp, win, XA_CLIPBOARD,
                                                        atomVector.at(i), &len);
                if ( clipbrdData != NULL )
                    break;
            }
            // if we got any data, copy it.
            if ( clipbrdData )
            {
                data.SetData(dfFormat, len, (char*)clipbrdData);
            }
            break;
        }
        default:
        {
            clipbrdData  = GetClipboardDataByFormat(disp, win, XA_CLIPBOARD, XA_UTF8_STRING, &len);
            // if we got any data, copy it.
            if ( clipbrdData  )
            {
                data.SetData(dfFormat, len, (char*)clipbrdData);
            }
        }
    }
}

bool wxClipboard::GetData( wxDataObject& data )
{
    // get formats count in the wxDataObject
    // for each data format, search it in x11 selection
    // and store it to wxDataObject
    size_t count = data.GetFormatCount();
    wxDataFormatScopedArray dfarr(count);
    data.GetAllFormats(dfarr.get());

    // prepare and find the root window,
    // the copied data stored in the root window as window property
    Display* xdisplay = wxGlobalDisplay();
    int xscreen = DefaultScreen(xdisplay);
    Window window = RootWindow(xdisplay, xscreen);

    // retrieve the data in each format.
    for( size_t i = 0; i < count; ++i )
    {
        GetClipboardData(xdisplay, window, data, dfarr[i]);
    }
    return true;
}

STDMETHODIMP wxIDataObject::EnumFormatEtc(DWORD dwDir,
                                          IEnumFORMATETC **ppenumFormatEtc)
{
    wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::EnumFormatEtc"));

    wxDataObject::Direction dir = dwDir == DATADIR_GET ? wxDataObject::Get
                                                       : wxDataObject::Set;

    ULONG nFormatCount = wx_truncate_cast(ULONG, m_pDataObject->GetFormatCount(dir));
    wxDataFormat format;
    wxDataFormat *formats;
    formats = nFormatCount == 1 ? &format : new wxDataFormat[nFormatCount];
    m_pDataObject->GetAllFormats(formats, dir);

    wxIEnumFORMATETC *pEnum = new wxIEnumFORMATETC(formats, nFormatCount);
    pEnum->AddRef();
    *ppenumFormatEtc = pEnum;

    if ( formats != &format ) {
        delete [] formats;
    }

    return S_OK;
}

bool wxClipboard::GetData( wxDataObject& data )
{
    if ( IsUsingPrimarySelection() )
        return false;

    wxCHECK_MSG( m_open, false, wxT("clipboard not open") );

    size_t formatcount = data.GetFormatCount() + 1;
    wxDataFormat *array = new wxDataFormat[ formatcount ];
    array[0] = data.GetPreferredFormat();
    data.GetAllFormats( &array[1] );

    bool transferred = false;

    if ( m_data )
    {
        for (size_t i = 0; !transferred && i < formatcount; i++)
        {
            wxDataFormat format = array[ i ];
            if ( m_data->IsSupported( format ) )
            {
                int dataSize = m_data->GetDataSize( format );
                transferred = true;

                if (dataSize == 0)
                {
                    data.SetData( format, 0, 0 );
                }
                else
                {
                    char *d = new char[ dataSize ];
                    m_data->GetDataHere( format, (void*)d );
                    data.SetData( format, dataSize, d );
                    delete [] d;
                }
            }
        }
    }

    // get formats from wxDataObjects
    if ( !transferred )
    {
        transferred = data.GetFromPasteboard( m_pasteboard ) ;
    }

    delete [] array;

    return transferred;
}

bool wxClipboard::GetData( wxDataObject& data )
{
    wxCHECK_MSG( m_open, false, wxT("clipboard not open") );

    // get all supported formats from wxDataObjects: notice that we are setting
    // the object data, so we need them in "Set" direction
    const size_t count = data.GetFormatCount(wxDataObject::Set);
    wxDataFormatArray formats(new wxDataFormat[count]);
    data.GetAllFormats(formats.get(), wxDataObject::Set);

    for ( size_t i = 0; i < count; i++ )
    {
        const wxDataFormat format(formats[i]);

        // is this format supported by clipboard ?
        if ( !DoIsSupported(format) )
            continue;

        wxLogTrace(TRACE_CLIPBOARD, wxT("Requesting format %s"),
                   format.GetId().c_str());

        // these variables will be used by our GTKOnSelectionReceived()
        m_receivedData = &data;
        m_formatSupported = false;

        {
            wxClipboardSync sync(*this);

            gtk_selection_convert(m_clipboardWidget,
                                  GTKGetClipboardAtom(),
                                  format,
                                  (guint32) GDK_CURRENT_TIME );
        } // wait until we get the results

        /*
           Normally this is a true error as we checked for the presence of such
           data before, but there are applications that may return an empty
           string (e.g. Gnumeric-1.6.1 on Linux if an empty cell is copied)
           which would produce a false error message here, so we check for the
           size of the string first. With ANSI, GetDataSize returns an extra
           value (for the closing null?), with unicode, the exact number of
           tokens is given (that is more than 1 for non-ASCII characters)
           (tested with Gnumeric-1.6.1 and OpenOffice.org-2.0.2)
         */
#if wxUSE_UNICODE
        if ( format != wxDF_UNICODETEXT || data.GetDataSize(format) > 0 )
#else // !UNICODE
        if ( format != wxDF_TEXT || data.GetDataSize(format) > 1 )
#endif // UNICODE / !UNICODE
        {
            wxCHECK_MSG( m_formatSupported, false,
                         wxT("error retrieving data from clipboard") );
        }

        return true;
    }

    wxLogTrace(TRACE_CLIPBOARD, wxT("GetData(): format not found"));

    return false;
}

bool wxClipboard::GetData( wxDataObject& data )
{
    wxCHECK_MSG( m_open, false, "clipboard not open" );

    Display* xdisplay = wxGlobalDisplay();
    Window xwindow = XtWindow( (Widget)wxTheApp->GetTopLevelRealizedWidget() );
    Time timestamp = XtLastTimestampProcessed( xdisplay );

    wxDataFormat chosenFormat;
    int retval;

    ///////////////////////////////////////////////////////////////////////////
    // determine if the cliboard holds any format we like
    ///////////////////////////////////////////////////////////////////////////
    while( ( retval = XmClipboardStartRetrieve( xdisplay, xwindow,
                      timestamp ) )
            == XmClipboardLocked );
    if( retval != XmClipboardSuccess )
        return false;

    wxClipboardEndRetrieve endRetrieve( xdisplay, xwindow );

    int count;
    unsigned long max_name_length;
    size_t dfcount = data.GetFormatCount( wxDataObject::Set );
    wxDataFormatScopedArray dfarr(dfcount);
    data.GetAllFormats( dfarr.get(), wxDataObject::Set );

    if( XmClipboardInquireCount( xdisplay, xwindow, &count, &max_name_length )
            == XmClipboardSuccess )
    {
        wxCharBuffer buf( max_name_length + 1 );
        unsigned long copied;

        for( int i = 0; i < count; ++i )
        {
            if( XmClipboardInquireFormat( xdisplay, xwindow, i + 1,
                                          (XtPointer)buf.data(),
                                          max_name_length, &copied )
                    != XmClipboardSuccess )
                continue;

            buf.data()[copied] = '\0';

            // try preferred format
            if( buf == data.GetPreferredFormat( wxDataObject::Set ).GetId() )
            {
                chosenFormat = data.GetPreferredFormat( wxDataObject::Set );
                break;
            }

            // try all other formats
            for( size_t i = 0; i < dfcount; ++i )
            {
                if( buf == dfarr[i].GetId() )
                    chosenFormat = dfarr[i];
            }
        }
    }

    if( chosenFormat == wxDF_INVALID )
        return false;

    ///////////////////////////////////////////////////////////////////////////
    // now retrieve the data
    ///////////////////////////////////////////////////////////////////////////
    unsigned long length, dummy1;
    long dummy2;
    wxString id = chosenFormat.GetId();

    while( ( retval = XmClipboardInquireLength( xdisplay, xwindow,
                      id.char_str(),
                      &length ) )
            == XmClipboardLocked );
    if( retval != XmClipboardSuccess )
        return false;

    wxCharBuffer buf(length);

    while( ( retval = XmClipboardRetrieve( xdisplay, xwindow,
                                           id.char_str(),
                                           (XtPointer)buf.data(),
                                           length, &dummy1, &dummy2 ) )
            == XmClipboardLocked );
    if( retval != XmClipboardSuccess )
        return false;

    if( !data.SetData( chosenFormat, length, buf.data() ) )
        return false;

    return true;
}

bool wxClipboard::GetData( wxDataObject& data )
{
    wxCHECK_MSG( m_open, false, wxT("clipboard not open") );

    /* get formats from wxDataObjects */
    wxDataFormat *array = new wxDataFormat[ data.GetFormatCount() ];
    data.GetAllFormats( array );

    for (size_t i = 0; i < data.GetFormatCount(); i++)
    {
        wxDataFormat format( array[i] );

        wxLogTrace( TRACE_CLIPBOARD,
                    wxT("wxClipboard::GetData: requested format: %s"),
                    format.GetId().c_str() );

        /* is data supported by clipboard ? */

        /* store requested format to be asked for by callbacks */
        m_targetRequested = format;

        wxCHECK_MSG( m_targetRequested, false, wxT("invalid clipboard format") );

        m_formatSupported = false;

       /* perform query. this will set m_formatSupported to
          true if m_targetRequested is supported.
          also, we have to wait for the "answer" from the
          clipboard owner which is an asynchronous process.
          therefore we set m_waiting = true here and wait
          until the callback "targets_selection_received"
          sets it to false */

        m_waiting = true;

        gtk_selection_convert( m_targetsWidget,
                           m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
                                        : g_clipboardAtom,
                           g_targetsAtom,
                           (guint32) GDK_CURRENT_TIME );

        while (m_waiting) gtk_main_iteration();

        if (!m_formatSupported) continue;

        /* store pointer to data object to be filled up by callbacks */
        m_receivedData = &data;

        /* store requested format to be asked for by callbacks */
        m_targetRequested = format;

        wxCHECK_MSG( m_targetRequested, false, wxT("invalid clipboard format") );

        /* start query */
        m_formatSupported = false;

        /* ask for clipboard contents.  this will set
           m_formatSupported to true if m_targetRequested
           is supported.
           also, we have to wait for the "answer" from the
           clipboard owner which is an asynchronous process.
           therefore we set m_waiting = true here and wait
           until the callback "targets_selection_received"
           sets it to false */

        m_waiting = true;

        wxLogTrace( TRACE_CLIPBOARD,
                    wxT("wxClipboard::GetData: format found, start convert") );

        gtk_selection_convert( m_clipboardWidget,
                               m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
                                            : g_clipboardAtom,
                               m_targetRequested,
                               (guint32) GDK_CURRENT_TIME );

        while (m_waiting) gtk_main_iteration();

        /*
           Normally this is a true error as we checked for the presence of such
           data before, but there are applications that may return an empty
           string (e.g. Gnumeric-1.6.1 on Linux if an empty cell is copied)
           which would produce a false error message here, so we check for the
           size of the string first. In ansi, GetDataSize returns an extra
           value (for the closing null?), with unicode, the exact number of
           tokens is given (that is more than 1 for special characters)
           (tested with Gnumeric-1.6.1 and OpenOffice.org-2.0.2)
         */
#if wxUSE_UNICODE
        if ( format != wxDF_UNICODETEXT || data.GetDataSize(format) > 0 )
#else // !UNICODE
        if ( format != wxDF_TEXT || data.GetDataSize(format) > 1 )
#endif // UNICODE / !UNICODE
        {
            wxCHECK_MSG( m_formatSupported, false,
                         wxT("error retrieving data from clipboard") );
        }

        /* return success */
        delete[] array;
//.........这里部分代码省略.........

bool wxClipboard::GetData( wxDataObject& data )
{
#if wxUSE_OLE_CLIPBOARD
    IDataObject *pDataObject = NULL;
    HRESULT hr = OleGetClipboard(&pDataObject);
    if ( FAILED(hr) || !pDataObject )
    {
        wxLogSysError(hr, _("Failed to get data from the clipboard"));

        return false;
    }

    // build the list of supported formats
    size_t nFormats = data.GetFormatCount(wxDataObject::Set);
    wxDataFormat format;
    wxDataFormat *formats;
    if ( nFormats == 1 )
    {
        // the most common case
        formats = &format;
    }
    else
    {
        // bad luck, need to alloc mem
        formats = new wxDataFormat[nFormats];
    }

    data.GetAllFormats(formats, wxDataObject::Set);

    // get the data for the given formats
    FORMATETC formatEtc;
    CLIPFORMAT cf;
    bool result = false;

    // enumerate all explicit formats on the clipboard.
    // note that this does not include implicit / synthetic (automatically
    // converted) formats.
#ifdef __WXDEBUG__
    // get the format enumerator
    IEnumFORMATETC *pEnumFormatEtc = NULL;
    hr = pDataObject->EnumFormatEtc(DATADIR_GET, &pEnumFormatEtc);
    if ( FAILED(hr) || !pEnumFormatEtc )
    {
        wxLogSysError(hr,
                      _("Failed to retrieve the supported clipboard formats"));
    }
    else
    {
        // ask for the supported formats and see if there are any we support
        for ( ;; )
        {
            ULONG nCount;
            hr = pEnumFormatEtc->Next(1, &formatEtc, &nCount);

            // don't use FAILED() because S_FALSE would pass it
            if ( hr != S_OK )
            {
                // no more formats
                break;
            }

            cf = formatEtc.cfFormat;

            wxLogTrace(wxTRACE_OleCalls,
                       wxT("Object on the clipboard supports format %s."),
                       wxDataObject::GetFormatName(cf));
        }

        pEnumFormatEtc->Release();
    }
#endif // Debug

    STGMEDIUM medium;
    // stop at the first valid format found on the clipboard
    for ( size_t n = 0; !result && (n < nFormats); n++ )
    {
        // convert to NativeFormat Id
        cf = formats[n].GetFormatId();

        // if the format is not available, try the next one
        // this test includes implicit / sythetic formats
        if ( !::IsClipboardFormatAvailable(cf) )
            continue;

        formatEtc.cfFormat = cf;
        formatEtc.ptd      = NULL;
        formatEtc.dwAspect = DVASPECT_CONTENT;
        formatEtc.lindex   = -1;

        // use the appropriate tymed
        switch ( formatEtc.cfFormat )
        {
            case CF_BITMAP:
                formatEtc.tymed = TYMED_GDI;
                break;

#ifndef __WXWINCE__
            case CF_METAFILEPICT:
                formatEtc.tymed = TYMED_MFPICT;
                break;
//.........这里部分代码省略.........

bool wxClipboard::GetData( wxDataObject& data )
{
    wxCHECK_MSG( m_open, false, wxT("clipboard not open") );

    /* get formats from wxDataObjects */
    wxDataFormat *array = new wxDataFormat[ data.GetFormatCount() ];
    data.GetAllFormats( array );

    for (size_t i = 0; i < data.GetFormatCount(); i++)
    {
        wxDataFormat format( array[i] );

        wxLogTrace( TRACE_CLIPBOARD,
                    wxT("wxClipboard::GetData: requested format: %s"),
                    format.GetId().c_str() );

        /* is data supported by clipboard ? */

        /* store requested format to be asked for by callbacks */
        m_targetRequested = format;

        wxCHECK_MSG( m_targetRequested, false, wxT("invalid clipboard format") );

        m_formatSupported = false;

       /* perform query. this will set m_formatSupported to
          true if m_targetRequested is supported.
          also, we have to wait for the "answer" from the
          clipboard owner which is an asynchronous process.
          therefore we set m_waiting = true here and wait
          until the callback "targets_selection_received"
          sets it to false */

        m_waiting = true;

#if 0
        gtk_selection_convert( m_targetsWidget,
                           m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
                                        : g_clipboardAtom,
                           g_targetsAtom,
                           (guint32) GDK_CURRENT_TIME );

        while (m_waiting) gtk_main_iteration();
#endif

        if (!m_formatSupported) continue;

        /* store pointer to data object to be filled up by callbacks */
        m_receivedData = &data;

        /* store requested format to be asked for by callbacks */
        m_targetRequested = format;

        wxCHECK_MSG( m_targetRequested, false, wxT("invalid clipboard format") );

        /* start query */
        m_formatSupported = false;

        /* ask for clipboard contents.  this will set
           m_formatSupported to true if m_targetRequested
           is supported.
           also, we have to wait for the "answer" from the
           clipboard owner which is an asynchronous process.
           therefore we set m_waiting = true here and wait
           until the callback "targets_selection_received"
           sets it to false */

        m_waiting = true;

        wxLogTrace( TRACE_CLIPBOARD,
                    wxT("wxClipboard::GetData: format found, start convert") );

#if 0
        gtk_selection_convert( m_clipboardWidget,
                               m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
                                            : g_clipboardAtom,
                               m_targetRequested,
                               (guint32) GDK_CURRENT_TIME );

        while (m_waiting) gtk_main_iteration();
#endif

        /* this is a true error as we checked for the presence of such data before */
        wxCHECK_MSG( m_formatSupported, false, wxT("error retrieving data from clipboard") );

        /* return success */
        delete[] array;
        return true;
    }

    wxLogTrace( TRACE_CLIPBOARD,
                wxT("wxClipboard::GetData: format not found") );

    /* return failure */
    delete[] array;
    return false;
}

STDMETHODIMP wxIDataObject::GetDataHere(FORMATETC *pformatetc,
                                        STGMEDIUM *pmedium)
{
    wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::GetDataHere"));

    // put data in caller provided medium
    switch ( pmedium->tymed )
    {
        case TYMED_GDI:
            if ( !m_pDataObject->GetDataHere(wxDF_BITMAP, &pmedium->hBitmap) )
                return E_UNEXPECTED;
            break;

        case TYMED_ENHMF:
            if ( !m_pDataObject->GetDataHere(wxDF_ENHMETAFILE,
                                             &pmedium->hEnhMetaFile) )
                return E_UNEXPECTED;
            break;

        case TYMED_MFPICT:
            // fall through - we pass METAFILEPICT through HGLOBAL

        case TYMED_HGLOBAL:
            {
                // copy data
                HGLOBAL hGlobal = pmedium->hGlobal;
                void *pBuf = GlobalLock(hGlobal);
                if ( pBuf == NULL ) {
                    wxLogLastError(wxT("GlobalLock"));
                    return E_OUTOFMEMORY;
                }

                wxDataFormat format = pformatetc->cfFormat;

                // possibly put the size in the beginning of the buffer
                pBuf = m_pDataObject->SetSizeInBuffer
                                      (
                                        pBuf,
                                        ::GlobalSize(hGlobal),
                                        format
                                      );

                if ( !m_pDataObject->GetDataHere(format, pBuf) )
                    return E_UNEXPECTED;

                GlobalUnlock(hGlobal);
            }
            break;

        default:
            return DV_E_TYMED;
    }

    return S_OK;
}

// information functions
STDMETHODIMP wxIDataObject::QueryGetData(FORMATETC *pformatetc)
{
    // do we accept data in this format?
    if ( pformatetc == NULL ) {
        wxLogTrace(wxTRACE_OleCalls,
                   wxT("wxIDataObject::QueryGetData: invalid ptr."));

        return E_INVALIDARG;
    }

    // the only one allowed by current COM implementation
    if ( pformatetc->lindex != -1 ) {
        wxLogTrace(wxTRACE_OleCalls,
                   wxT("wxIDataObject::QueryGetData: bad lindex %ld"),
                   pformatetc->lindex);

        return DV_E_LINDEX;
    }

    // we don't support anything other (THUMBNAIL, ICON, DOCPRINT...)
    if ( pformatetc->dwAspect != DVASPECT_CONTENT ) {
        wxLogTrace(wxTRACE_OleCalls,
                   wxT("wxIDataObject::QueryGetData: bad dwAspect %ld"),
                   pformatetc->dwAspect);

        return DV_E_DVASPECT;
    }

    // and now check the type of data requested
    wxDataFormat format = pformatetc->cfFormat;
    if ( m_pDataObject->IsSupportedFormat(format) ) {
        wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::QueryGetData: %s ok"),
                   wxGetFormatName(format));
    }
    else {
        wxLogTrace(wxTRACE_OleCalls,
                   wxT("wxIDataObject::QueryGetData: %s unsupported"),
                   wxGetFormatName(format));

        return DV_E_FORMATETC;
    }

    // we only transfer data by global memory, except for some particular cases
    DWORD tymed = pformatetc->tymed;
    if ( (format == wxDF_BITMAP && !(tymed & TYMED_GDI)) &&
         !(tymed & TYMED_HGLOBAL) ) {
        // it's not what we're waiting for
        wxLogTrace(wxTRACE_OleCalls,
                   wxT("wxIDataObject::QueryGetData: %s != %s"),
                   GetTymedName(tymed),
                   GetTymedName(format == wxDF_BITMAP ? TYMED_GDI
                                                      : TYMED_HGLOBAL));

        return DV_E_TYMED;
    }

    return S_OK;
}

void CIDataObject::GetDataHere(
  const wxDataFormat&               rFormat
, char*                             pzBuffer
, ULONG                             WXUNUSED(ulLen)
)
{
    m_pDataObject->GetDataHere( rFormat
                               ,(void*)pzBuffer
                              );
} // end of CIDataObject::GetDataHere

void CIDataObject::SetData (
  const wxDataFormat&               rFormat
, char*                             pzBuffer
)
{
    ULONG                           ulSize = 0;

    switch (rFormat.GetType())
    {
        case wxDF_TEXT:
        case wxDF_OEMTEXT:
        case wxDF_FILENAME:
        case wxDF_HTML:
            ulSize = strlen((const char *)pzBuffer);
            break;

#if wxUSE_UNICODE
        case wxDF_UNICODETEXT:
             ulSize = ::wcslen((const wchar_t *)pzBuffer);
             break;
#endif

        case wxDF_BITMAP:
        case wxDF_METAFILE:
        case wxDF_ENHMETAFILE:
        case wxDF_TIFF:
        case wxDF_DIB:
            ulSize = 0; // pass via a handle
            break;


        case wxDF_SYLK:
        case wxDF_DIF:
        case wxDF_PALETTE:
        case wxDF_PENDATA:
        case wxDF_RIFF:
        case wxDF_WAVE:
        case wxDF_LOCALE:
            //PUNT
            break;

        case wxDF_PRIVATE:
            size_t*                 p = (size_t *)pzBuffer;

            ulSize = *p++;
            pzBuffer = (char*)p;
            break;
    }
    m_pDataObject->SetData( rFormat
                           ,ulSize
                           ,(void*)pzBuffer
                          );
} // end of CIDataObject::SetData

bool CIDataObject::GetData ( const wxDataFormat& rFormat,
                             char* pzBuffer,
                             ULONG ulLen )
{
    QueryGetData(rFormat);
    if (rFormat.GetType() == wxDF_INVALID)
        return false;

    ULONG                           ulSize = m_pDataObject->GetDataSize(rFormat);

    if (ulSize == 0)
    {
        //
        // It probably means that the method is just not implemented
        //
        return false;
    }
    if (rFormat.GetType() == wxDF_PRIVATE)
    {
        //
        // For custom formats, put the size with the data - alloc the
        // space for it
        //
        ulSize += sizeof(ULONG);
    }

    if (ulSize > ulLen) // not enough room to copy
        return false;

    //
    // Copy the data
    //
    GetDataHere( rFormat
                ,pzBuffer
                ,ulSize
               );
    return true;
} // end of CIDataObject::GetData