src/msw/ole/dataobj.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/ole/dataobj.cpp
   3 // Purpose:     implementation of wx[I]DataObject class
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     10.05.98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #if defined(__BORLANDC__)
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/intl.h"
  29     #include "wx/log.h"
  30     #include "wx/utils.h"
  31     #include "wx/wxcrtvararg.h"
  32 #endif
  33
  34 #include "wx/dataobj.h"
  35
  36 #if wxUSE_OLE && defined(__WIN32__) && !defined(__GNUWIN32_OLD__)
  37
  38 #include "wx/msw/private.h"         // includes <windows.h>
  39
  40 #ifdef __WXWINCE__
  41 #include <winreg.h>
  42 #endif
  43
  44 // for some compilers, the entire ole2.h must be included, not only oleauto.h
  45 #if wxUSE_NORLANDER_HEADERS || defined(__WATCOMC__) || defined(__WXWINCE__)
  46   #include <ole2.h>
  47 #endif
  48
  49 #include <oleauto.h>
  50 #include <shlobj.h>
  51
  52 #include "wx/msw/ole/oleutils.h"
  53
  54 #include "wx/msw/dib.h"
  55
  56 #ifndef CFSTR_SHELLURL
  57 #define CFSTR_SHELLURL _T("UniformResourceLocator")
  58 #endif
  59
  60 // ----------------------------------------------------------------------------
  61 // functions
  62 // ----------------------------------------------------------------------------
  63
  64 #ifdef __WXDEBUG__
  65     static const wxChar *GetTymedName(DWORD tymed);
  66 #else // !Debug
  67     #define GetTymedName(tymed) wxEmptyString
  68 #endif // Debug/!Debug
  69
  70 // ----------------------------------------------------------------------------
  71 // wxIEnumFORMATETC interface implementation
  72 // ----------------------------------------------------------------------------
  73
  74 class wxIEnumFORMATETC : public IEnumFORMATETC
  75 {
  76 public:
  77     wxIEnumFORMATETC(const wxDataFormat* formats, ULONG nCount);
  78     virtual ~wxIEnumFORMATETC() { delete [] m_formats; }
  79
  80     // IEnumFORMATETC
  81     STDMETHODIMP Next(ULONG celt, FORMATETC *rgelt, ULONG *pceltFetched);
  82     STDMETHODIMP Skip(ULONG celt);
  83     STDMETHODIMP Reset();
  84     STDMETHODIMP Clone(IEnumFORMATETC **ppenum);
  85
  86     DECLARE_IUNKNOWN_METHODS;
  87
  88 private:
  89     CLIPFORMAT *m_formats;  // formats we can provide data in
  90     ULONG       m_nCount,   // number of formats we support
  91                 m_nCurrent; // current enum position
  92
  93     DECLARE_NO_COPY_CLASS(wxIEnumFORMATETC)
  94 };
  95
  96 // ----------------------------------------------------------------------------
  97 // wxIDataObject implementation of IDataObject interface
  98 // ----------------------------------------------------------------------------
  99
 100 class wxIDataObject : public IDataObject
 101 {
 102 public:
 103     wxIDataObject(wxDataObject *pDataObject);
 104     virtual ~wxIDataObject();
 105
 106     // normally, wxDataObject controls our lifetime (i.e. we're deleted when it
 107     // is), but in some cases, the situation is reversed, that is we delete it
 108     // when this object is deleted - setting this flag enables such logic
 109     void SetDeleteFlag() { m_mustDelete = true; }
 110
 111     // IDataObject
 112     STDMETHODIMP GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium);
 113     STDMETHODIMP GetDataHere(FORMATETC *pformatetc, STGMEDIUM *pmedium);
 114     STDMETHODIMP QueryGetData(FORMATETC *pformatetc);
 115     STDMETHODIMP GetCanonicalFormatEtc(FORMATETC *In, FORMATETC *pOut);
 116     STDMETHODIMP SetData(FORMATETC *pfetc, STGMEDIUM *pmedium, BOOL fRelease);
 117     STDMETHODIMP EnumFormatEtc(DWORD dwDirection, IEnumFORMATETC **ppenumFEtc);
 118     STDMETHODIMP DAdvise(FORMATETC *pfetc, DWORD ad, IAdviseSink *p, DWORD *pdw);
 119     STDMETHODIMP DUnadvise(DWORD dwConnection);
 120     STDMETHODIMP EnumDAdvise(IEnumSTATDATA **ppenumAdvise);
 121
 122     DECLARE_IUNKNOWN_METHODS;
 123
 124 private:
 125     wxDataObject *m_pDataObject;      // pointer to C++ class we belong to
 126
 127     bool m_mustDelete;
 128
 129     DECLARE_NO_COPY_CLASS(wxIDataObject)
 130 };
 131
 132 // ============================================================================
 133 // implementation
 134 // ============================================================================
 135
 136 // ----------------------------------------------------------------------------
 137 // wxDataFormat
 138 // ----------------------------------------------------------------------------
 139
 140 void wxDataFormat::SetId(const wxString& format)
 141 {
 142     m_format = (wxDataFormat::NativeFormat)::RegisterClipboardFormat(format.wx_str());
 143     if ( !m_format )
 144     {
 145         wxLogError(_("Couldn't register clipboard format '%s'."), format);
 146     }
 147 }
 148
 149 wxString wxDataFormat::GetId() const
 150 {
 151     static const int max = 256;
 152
 153     wxString s;
 154
 155     wxCHECK_MSG( !IsStandard(), s,
 156                  wxT("name of predefined format cannot be retrieved") );
 157
 158     int len = ::GetClipboardFormatName(m_format, wxStringBuffer(s, max), max);
 159
 160     if ( !len )
 161     {
 162         wxLogError(_("The clipboard format '%d' doesn't exist."), m_format);
 163         return wxEmptyString;
 164     }
 165
 166     return s;
 167 }
 168
 169 // ----------------------------------------------------------------------------
 170 // wxIEnumFORMATETC
 171 // ----------------------------------------------------------------------------
 172
 173 BEGIN_IID_TABLE(wxIEnumFORMATETC)
 174     ADD_IID(Unknown)
 175     ADD_IID(EnumFORMATETC)
 176 END_IID_TABLE;
 177
 178 IMPLEMENT_IUNKNOWN_METHODS(wxIEnumFORMATETC)
 179
 180 wxIEnumFORMATETC::wxIEnumFORMATETC(const wxDataFormat *formats, ULONG nCount)
 181 {
 182     m_nCurrent = 0;
 183     m_nCount = nCount;
 184     m_formats = new CLIPFORMAT[nCount];
 185     for ( ULONG n = 0; n < nCount; n++ ) {
 186         m_formats[n] = formats[n].GetFormatId();
 187     }
 188 }
 189
 190 STDMETHODIMP wxIEnumFORMATETC::Next(ULONG      celt,
 191                                     FORMATETC *rgelt,
 192                                     ULONG     *pceltFetched)
 193 {
 194     wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Next"));
 195
 196     ULONG numFetched = 0;
 197     while (m_nCurrent < m_nCount && numFetched < celt) {
 198         FORMATETC format;
 199         format.cfFormat = m_formats[m_nCurrent++];
 200         format.ptd      = NULL;
 201         format.dwAspect = DVASPECT_CONTENT;
 202         format.lindex   = -1;
 203         format.tymed    = TYMED_HGLOBAL;
 204
 205         *rgelt++ = format;
 206         numFetched++;
 207     }
 208
 209     if (pceltFetched)
 210         *pceltFetched = numFetched;
 211
 212     return numFetched == celt ? S_OK : S_FALSE;
 213 }
 214
 215 STDMETHODIMP wxIEnumFORMATETC::Skip(ULONG celt)
 216 {
 217     wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Skip"));
 218
 219     m_nCurrent += celt;
 220     if ( m_nCurrent < m_nCount )
 221         return S_OK;
 222
 223     // no, can't skip this many elements
 224     m_nCurrent -= celt;
 225
 226     return S_FALSE;
 227 }
 228
 229 STDMETHODIMP wxIEnumFORMATETC::Reset()
 230 {
 231     wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Reset"));
 232
 233     m_nCurrent = 0;
 234
 235     return S_OK;
 236 }
 237
 238 STDMETHODIMP wxIEnumFORMATETC::Clone(IEnumFORMATETC **ppenum)
 239 {
 240     wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Clone"));
 241
 242     // unfortunately, we can't reuse the code in ctor - types are different
 243     wxIEnumFORMATETC *pNew = new wxIEnumFORMATETC(NULL, 0);
 244     pNew->m_nCount = m_nCount;
 245     pNew->m_formats = new CLIPFORMAT[m_nCount];
 246     for ( ULONG n = 0; n < m_nCount; n++ ) {
 247         pNew->m_formats[n] = m_formats[n];
 248     }
 249     pNew->AddRef();
 250     *ppenum = pNew;
 251
 252     return S_OK;
 253 }
 254
 255 // ----------------------------------------------------------------------------
 256 // wxIDataObject
 257 // ----------------------------------------------------------------------------
 258
 259 BEGIN_IID_TABLE(wxIDataObject)
 260     ADD_IID(Unknown)
 261     ADD_IID(DataObject)
 262 END_IID_TABLE;
 263
 264 IMPLEMENT_IUNKNOWN_METHODS(wxIDataObject)
 265
 266 wxIDataObject::wxIDataObject(wxDataObject *pDataObject)
 267 {
 268     m_pDataObject = pDataObject;
 269     m_mustDelete = false;
 270 }
 271
 272 wxIDataObject::~wxIDataObject()
 273 {
 274     if ( m_mustDelete )
 275     {
 276         delete m_pDataObject;
 277     }
 278 }
 279
 280 // get data functions
 281 STDMETHODIMP wxIDataObject::GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium)
 282 {
 283     wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::GetData"));
 284
 285     // is data is in our format?
 286     HRESULT hr = QueryGetData(pformatetcIn);
 287     if ( FAILED(hr) )
 288         return hr;
 289
 290     // for the bitmaps and metafiles we use the handles instead of global memory
 291     // to pass the data
 292     wxDataFormat format = (wxDataFormat::NativeFormat)pformatetcIn->cfFormat;
 293
 294     switch ( format )
 295     {
 296         case wxDF_BITMAP:
 297             pmedium->tymed = TYMED_GDI;
 298             break;
 299
 300         case wxDF_ENHMETAFILE:
 301             pmedium->tymed = TYMED_ENHMF;
 302             break;
 303
 304 #ifndef __WXWINCE__
 305         case wxDF_METAFILE:
 306             pmedium->hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE,
 307                                            sizeof(METAFILEPICT));
 308             if ( !pmedium->hGlobal ) {
 309                 wxLogLastError(wxT("GlobalAlloc"));
 310                 return E_OUTOFMEMORY;
 311             }
 312             pmedium->tymed = TYMED_MFPICT;
 313             break;
 314 #endif
 315         default:
 316             // alloc memory
 317             size_t size = m_pDataObject->GetDataSize(format);
 318             if ( !size ) {
 319                 // it probably means that the method is just not implemented
 320                 wxLogDebug(wxT("Invalid data size - can't be 0"));
 321
 322                 return DV_E_FORMATETC;
 323             }
 324
 325             // we may need extra space for the buffer size
 326             size += m_pDataObject->GetBufferOffset( format );
 327
 328             HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE, size);
 329             if ( hGlobal == NULL ) {
 330                 wxLogLastError(wxT("GlobalAlloc"));
 331                 return E_OUTOFMEMORY;
 332             }
 333
 334             // copy data
 335             pmedium->tymed   = TYMED_HGLOBAL;
 336             pmedium->hGlobal = hGlobal;
 337     }
 338
 339     pmedium->pUnkForRelease = NULL;
 340
 341     // do copy the data
 342     hr = GetDataHere(pformatetcIn, pmedium);
 343     if ( FAILED(hr) ) {
 344         // free resources we allocated
 345         if ( pmedium->tymed & (TYMED_HGLOBAL | TYMED_MFPICT) ) {
 346             GlobalFree(pmedium->hGlobal);
 347         }
 348
 349         return hr;
 350     }
 351
 352     return S_OK;
 353 }
 354
 355 STDMETHODIMP wxIDataObject::GetDataHere(FORMATETC *pformatetc,
 356                                         STGMEDIUM *pmedium)
 357 {
 358     wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::GetDataHere"));
 359
 360     // put data in caller provided medium
 361     switch ( pmedium->tymed )
 362     {
 363         case TYMED_GDI:
 364             if ( !m_pDataObject->GetDataHere(wxDF_BITMAP, &pmedium->hBitmap) )
 365                 return E_UNEXPECTED;
 366             break;
 367
 368         case TYMED_ENHMF:
 369             if ( !m_pDataObject->GetDataHere(wxDF_ENHMETAFILE,
 370                                              &pmedium->hEnhMetaFile) )
 371                 return E_UNEXPECTED;
 372             break;
 373
 374         case TYMED_MFPICT:
 375             // fall through - we pass METAFILEPICT through HGLOBAL
 376
 377         case TYMED_HGLOBAL:
 378             {
 379                 // copy data
 380                 HGLOBAL hGlobal = pmedium->hGlobal;
 381                 void *pBuf = GlobalLock(hGlobal);
 382                 if ( pBuf == NULL ) {
 383                     wxLogLastError(wxT("GlobalLock"));
 384                     return E_OUTOFMEMORY;
 385                 }
 386
 387                 wxDataFormat format = pformatetc->cfFormat;
 388
 389                 // possibly put the size in the beginning of the buffer
 390                 pBuf = m_pDataObject->SetSizeInBuffer
 391                                       (
 392                                         pBuf,
 393                                         ::GlobalSize(hGlobal),
 394                                         format
 395                                       );
 396
 397                 if ( !m_pDataObject->GetDataHere(format, pBuf) )
 398                     return E_UNEXPECTED;
 399
 400                 GlobalUnlock(hGlobal);
 401             }
 402             break;
 403
 404         default:
 405             return DV_E_TYMED;
 406     }
 407
 408     return S_OK;
 409 }
 410
 411
 412 // set data functions
 413 STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
 414                                     STGMEDIUM *pmedium,
 415                                     BOOL       fRelease)
 416 {
 417     wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::SetData"));
 418
 419     switch ( pmedium->tymed )
 420     {
 421         case TYMED_GDI:
 422             m_pDataObject->SetData(wxDF_BITMAP, 0, &pmedium->hBitmap);
 423             break;
 424
 425         case TYMED_ENHMF:
 426             m_pDataObject->SetData(wxDF_ENHMETAFILE, 0, &pmedium->hEnhMetaFile);
 427             break;
 428
 429         case TYMED_MFPICT:
 430             // fall through - we pass METAFILEPICT through HGLOBAL
 431         case TYMED_HGLOBAL:
 432             {
 433                 wxDataFormat format = pformatetc->cfFormat;
 434
 435                 // this is quite weird, but for file drag and drop, explorer
 436                 // calls our SetData() with the formats we do *not* support!
 437                 //
 438                 // as we can't fix this bug in explorer (it's a bug because it
 439                 // should only use formats returned by EnumFormatEtc), do the
 440                 // check here
 441                 if ( !m_pDataObject->IsSupported(format, wxDataObject::Set) ) {
 442                     // go away!
 443                     return DV_E_FORMATETC;
 444                 }
 445
 446                 // copy data
 447                 const void *pBuf = GlobalLock(pmedium->hGlobal);
 448                 if ( pBuf == NULL ) {
 449                     wxLogLastError(wxT("GlobalLock"));
 450
 451                     return E_OUTOFMEMORY;
 452                 }
 453
 454                 // we've got a problem with SetData() here because the base
 455                 // class version requires the size parameter which we don't
 456                 // have anywhere in OLE data transfer - so we need to
 457                 // synthetise it for known formats and we suppose that all data
 458                 // in custom formats starts with a DWORD containing the size
 459                 size_t size;
 460                 switch ( format )
 461                 {
 462                     case CF_TEXT:
 463                     case CF_OEMTEXT:
 464                         size = strlen((const char *)pBuf);
 465                         break;
 466 #if !(defined(__BORLANDC__) && (__BORLANDC__ < 0x500))
 467                     case CF_UNICODETEXT:
 468 #if ( defined(__BORLANDC__) && (__BORLANDC__ > 0x530) ) \
 469     || ( defined(__MWERKS__) && defined(__WXMSW__) )
 470                         size = std::wcslen((const wchar_t *)pBuf) * sizeof(wchar_t);
 471 #else
 472                         size = wxWcslen((const wchar_t *)pBuf) * sizeof(wchar_t);
 473 #endif
 474                         break;
 475 #endif
 476                     case CF_BITMAP:
 477 #ifndef __WXWINCE__
 478                     case CF_HDROP:
 479                         // these formats don't use size at all, anyhow (but
 480                         // pass data by handle, which is always a single DWORD)
 481                         size = 0;
 482                         break;
 483 #endif
 484
 485                     case CF_DIB:
 486                         // the handler will calculate size itself (it's too
 487                         // complicated to do it here)
 488                         size = 0;
 489                         break;
 490
 491 #ifndef __WXWINCE__
 492                     case CF_METAFILEPICT:
 493                         size = sizeof(METAFILEPICT);
 494                         break;
 495 #endif
 496                     default:
 497                         pBuf = m_pDataObject->
 498                                     GetSizeFromBuffer(pBuf, &size, format);
 499                         size -= m_pDataObject->GetBufferOffset(format);
 500                 }
 501
 502                 bool ok = m_pDataObject->SetData(format, size, pBuf);
 503
 504                 GlobalUnlock(pmedium->hGlobal);
 505
 506                 if ( !ok ) {
 507                     return E_UNEXPECTED;
 508                 }
 509             }
 510             break;
 511
 512         default:
 513             return DV_E_TYMED;
 514     }
 515
 516     if ( fRelease ) {
 517         // we own the medium, so we must release it - but do *not* free any
 518         // data we pass by handle because we have copied it elsewhere
 519         switch ( pmedium->tymed )
 520         {
 521             case TYMED_GDI:
 522                 pmedium->hBitmap = 0;
 523                 break;
 524
 525             case TYMED_MFPICT:
 526                 pmedium->hMetaFilePict = 0;
 527                 break;
 528
 529             case TYMED_ENHMF:
 530                 pmedium->hEnhMetaFile = 0;
 531                 break;
 532         }
 533
 534         ReleaseStgMedium(pmedium);
 535     }
 536
 537     return S_OK;
 538 }
 539
 540 // information functions
 541 STDMETHODIMP wxIDataObject::QueryGetData(FORMATETC *pformatetc)
 542 {
 543     // do we accept data in this format?
 544     if ( pformatetc == NULL ) {
 545         wxLogTrace(wxTRACE_OleCalls,
 546                    wxT("wxIDataObject::QueryGetData: invalid ptr."));
 547
 548         return E_INVALIDARG;
 549     }
 550
 551     // the only one allowed by current COM implementation
 552     if ( pformatetc->lindex != -1 ) {
 553         wxLogTrace(wxTRACE_OleCalls,
 554                    wxT("wxIDataObject::QueryGetData: bad lindex %ld"),
 555                    pformatetc->lindex);
 556
 557         return DV_E_LINDEX;
 558     }
 559
 560     // we don't support anything other (THUMBNAIL, ICON, DOCPRINT...)
 561     if ( pformatetc->dwAspect != DVASPECT_CONTENT ) {
 562         wxLogTrace(wxTRACE_OleCalls,
 563                    wxT("wxIDataObject::QueryGetData: bad dwAspect %ld"),
 564                    pformatetc->dwAspect);
 565
 566         return DV_E_DVASPECT;
 567     }
 568
 569     // and now check the type of data requested
 570     wxDataFormat format = pformatetc->cfFormat;
 571     if ( m_pDataObject->IsSupportedFormat(format) ) {
 572         wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::QueryGetData: %s ok"),
 573                    wxGetFormatName(format));
 574     }
 575     else {
 576         wxLogTrace(wxTRACE_OleCalls,
 577                    wxT("wxIDataObject::QueryGetData: %s unsupported"),
 578                    wxGetFormatName(format));
 579
 580         return DV_E_FORMATETC;
 581     }
 582
 583     // we only transfer data by global memory, except for some particular cases
 584     DWORD tymed = pformatetc->tymed;
 585     if ( (format == wxDF_BITMAP && !(tymed & TYMED_GDI)) &&
 586          !(tymed & TYMED_HGLOBAL) ) {
 587         // it's not what we're waiting for
 588         wxLogTrace(wxTRACE_OleCalls,
 589                    wxT("wxIDataObject::QueryGetData: %s != %s"),
 590                    GetTymedName(tymed),
 591                    GetTymedName(format == wxDF_BITMAP ? TYMED_GDI
 592                                                       : TYMED_HGLOBAL));
 593
 594         return DV_E_TYMED;
 595     }
 596
 597     return S_OK;
 598 }
 599
 600 STDMETHODIMP wxIDataObject::GetCanonicalFormatEtc(FORMATETC *WXUNUSED(pFormatetcIn),
 601                                                   FORMATETC *pFormatetcOut)
 602 {
 603     wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::GetCanonicalFormatEtc"));
 604
 605     // TODO we might want something better than this trivial implementation here
 606     if ( pFormatetcOut != NULL )
 607         pFormatetcOut->ptd = NULL;
 608
 609     return DATA_S_SAMEFORMATETC;
 610 }
 611
 612 STDMETHODIMP wxIDataObject::EnumFormatEtc(DWORD dwDir,
 613                                           IEnumFORMATETC **ppenumFormatEtc)
 614 {
 615     wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::EnumFormatEtc"));
 616
 617     wxDataObject::Direction dir = dwDir == DATADIR_GET ? wxDataObject::Get
 618                                                        : wxDataObject::Set;
 619
 620     ULONG nFormatCount = wx_truncate_cast(ULONG, m_pDataObject->GetFormatCount(dir));
 621     wxDataFormat format;
 622     wxDataFormat *formats;
 623     formats = nFormatCount == 1 ? &format : new wxDataFormat[nFormatCount];
 624     m_pDataObject->GetAllFormats(formats, dir);
 625
 626     wxIEnumFORMATETC *pEnum = new wxIEnumFORMATETC(formats, nFormatCount);
 627     pEnum->AddRef();
 628     *ppenumFormatEtc = pEnum;
 629
 630     if ( formats != &format ) {
 631         delete [] formats;
 632     }
 633
 634     return S_OK;
 635 }
 636
 637 // ----------------------------------------------------------------------------
 638 // advise sink functions (not implemented)
 639 // ----------------------------------------------------------------------------
 640
 641 STDMETHODIMP wxIDataObject::DAdvise(FORMATETC   *WXUNUSED(pformatetc),
 642                                     DWORD        WXUNUSED(advf),
 643                                     IAdviseSink *WXUNUSED(pAdvSink),
 644                                     DWORD       *WXUNUSED(pdwConnection))
 645 {
 646   return OLE_E_ADVISENOTSUPPORTED;
 647 }
 648
 649 STDMETHODIMP wxIDataObject::DUnadvise(DWORD WXUNUSED(dwConnection))
 650 {
 651   return OLE_E_ADVISENOTSUPPORTED;
 652 }
 653
 654 STDMETHODIMP wxIDataObject::EnumDAdvise(IEnumSTATDATA **WXUNUSED(ppenumAdvise))
 655 {
 656   return OLE_E_ADVISENOTSUPPORTED;
 657 }
 658
 659 // ----------------------------------------------------------------------------
 660 // wxDataObject
 661 // ----------------------------------------------------------------------------
 662
 663 wxDataObject::wxDataObject()
 664 {
 665     m_pIDataObject = new wxIDataObject(this);
 666     m_pIDataObject->AddRef();
 667 }
 668
 669 wxDataObject::~wxDataObject()
 670 {
 671     ReleaseInterface(m_pIDataObject);
 672 }
 673
 674 void wxDataObject::SetAutoDelete()
 675 {
 676     ((wxIDataObject *)m_pIDataObject)->SetDeleteFlag();
 677     m_pIDataObject->Release();
 678
 679     // so that the dtor doesnt' crash
 680     m_pIDataObject = NULL;
 681 }
 682
 683 size_t wxDataObject::GetBufferOffset(const wxDataFormat& format )
 684 {
 685     // if we prepend the size of the data to the buffer itself, account for it
 686     return NeedsVerbatimData(format) ? 0 : sizeof(size_t);
 687 }
 688
 689 const void *wxDataObject::GetSizeFromBuffer(const void *buffer,
 690                                             size_t *size,
 691                                             const wxDataFormat& WXUNUSED(format))
 692 {
 693     // hack: the third parameter is declared non-const in Wine's headers so
 694     // cast away the const
 695     const size_t realsz = ::HeapSize(::GetProcessHeap(), 0,
 696                                      wx_const_cast(void*, buffer));
 697     if ( realsz == (size_t)-1 )
 698     {
 699         // note that HeapSize() does not set last error
 700         wxLogApiError(wxT("HeapSize"), 0);
 701         return NULL;
 702     }
 703
 704     *size = realsz;
 705
 706     return buffer;
 707 }
 708
 709 void* wxDataObject::SetSizeInBuffer( void* buffer, size_t size,
 710                                       const wxDataFormat& format )
 711 {
 712     size_t* p = (size_t *)buffer;
 713     if ( !NeedsVerbatimData(format) )
 714     {
 715         // prepend the size to the data and skip it
 716         *p++ = size;
 717     }
 718
 719     return p;
 720 }
 721
 722 #ifdef __WXDEBUG__
 723
 724 const wxChar *wxDataObject::GetFormatName(wxDataFormat format)
 725 {
 726     // case 'xxx' is not a valid value for switch of enum 'wxDataFormat'
 727     #ifdef __VISUALC__
 728         #pragma warning(disable:4063)
 729     #endif // VC++
 730
 731     static wxChar s_szBuf[256];
 732     switch ( format ) {
 733         case CF_TEXT:         return wxT("CF_TEXT");
 734         case CF_BITMAP:       return wxT("CF_BITMAP");
 735         case CF_SYLK:         return wxT("CF_SYLK");
 736         case CF_DIF:          return wxT("CF_DIF");
 737         case CF_TIFF:         return wxT("CF_TIFF");
 738         case CF_OEMTEXT:      return wxT("CF_OEMTEXT");
 739         case CF_DIB:          return wxT("CF_DIB");
 740         case CF_PALETTE:      return wxT("CF_PALETTE");
 741         case CF_PENDATA:      return wxT("CF_PENDATA");
 742         case CF_RIFF:         return wxT("CF_RIFF");
 743         case CF_WAVE:         return wxT("CF_WAVE");
 744         case CF_UNICODETEXT:  return wxT("CF_UNICODETEXT");
 745 #ifndef __WXWINCE__
 746         case CF_METAFILEPICT: return wxT("CF_METAFILEPICT");
 747         case CF_ENHMETAFILE:  return wxT("CF_ENHMETAFILE");
 748         case CF_LOCALE:       return wxT("CF_LOCALE");
 749         case CF_HDROP:        return wxT("CF_HDROP");
 750 #endif
 751
 752         default:
 753             if ( !::GetClipboardFormatName(format, s_szBuf, WXSIZEOF(s_szBuf)) )
 754             {
 755                 // it must be a new predefined format we don't know the name of
 756                 wxSprintf(s_szBuf, wxT("unknown CF (0x%04x)"), format.GetFormatId());
 757             }
 758
 759             return s_szBuf;
 760     }
 761
 762     #ifdef __VISUALC__
 763         #pragma warning(default:4063)
 764     #endif // VC++
 765 }
 766
 767 #endif // Debug
 768
 769 // ----------------------------------------------------------------------------
 770 // wxBitmapDataObject supports CF_DIB format
 771 // ----------------------------------------------------------------------------
 772
 773 // TODO: support CF_DIB under Windows CE as well
 774
 775 size_t wxBitmapDataObject::GetDataSize() const
 776 {
 777 #if wxUSE_WXDIB && !defined(__WXWINCE__)
 778     return wxDIB::ConvertFromBitmap(NULL, GetHbitmapOf(GetBitmap()));
 779 #else
 780     return 0;
 781 #endif
 782 }
 783
 784 bool wxBitmapDataObject::GetDataHere(void *buf) const
 785 {
 786 #if wxUSE_WXDIB && !defined(__WXWINCE__)
 787     BITMAPINFO * const pbi = (BITMAPINFO *)buf;
 788
 789     return wxDIB::ConvertFromBitmap(pbi, GetHbitmapOf(GetBitmap())) != 0;
 790 #else
 791     wxUnusedVar(buf);
 792     return false;
 793 #endif
 794 }
 795
 796 bool wxBitmapDataObject::SetData(size_t WXUNUSED(len), const void *buf)
 797 {
 798 #if wxUSE_WXDIB && !defined(__WXWINCE__)
 799     const BITMAPINFO * const pbmi = (const BITMAPINFO *)buf;
 800
 801     HBITMAP hbmp = wxDIB::ConvertToBitmap(pbmi);
 802
 803     wxCHECK_MSG( hbmp, FALSE, wxT("pasting/dropping invalid bitmap") );
 804
 805     const BITMAPINFOHEADER * const pbmih = &pbmi->bmiHeader;
 806     wxBitmap bitmap(pbmih->biWidth, pbmih->biHeight, pbmih->biBitCount);
 807     bitmap.SetHBITMAP((WXHBITMAP)hbmp);
 808
 809     // TODO: create wxPalette if the bitmap has any
 810
 811     SetBitmap(bitmap);
 812
 813     return true;
 814 #else
 815     wxUnusedVar(buf);
 816     return false;
 817 #endif
 818 }
 819
 820 // ----------------------------------------------------------------------------
 821 // wxBitmapDataObject2 supports CF_BITMAP format
 822 // ----------------------------------------------------------------------------
 823
 824 // the bitmaps aren't passed by value as other types of data (i.e. by copying
 825 // the data into a global memory chunk and passing it to the clipboard or
 826 // another application or whatever), but by handle, so these generic functions
 827 // don't make much sense to them.
 828
 829 size_t wxBitmapDataObject2::GetDataSize() const
 830 {
 831     return 0;
 832 }
 833
 834 bool wxBitmapDataObject2::GetDataHere(void *pBuf) const
 835 {
 836     // we put a bitmap handle into pBuf
 837     *(WXHBITMAP *)pBuf = GetBitmap().GetHBITMAP();
 838
 839     return true;
 840 }
 841
 842 bool wxBitmapDataObject2::SetData(size_t WXUNUSED(len), const void *pBuf)
 843 {
 844     HBITMAP hbmp = *(HBITMAP *)pBuf;
 845
 846     BITMAP bmp;
 847     if ( !GetObject(hbmp, sizeof(BITMAP), &bmp) )
 848     {
 849         wxLogLastError(wxT("GetObject(HBITMAP)"));
 850     }
 851
 852     wxBitmap bitmap(bmp.bmWidth, bmp.bmHeight, bmp.bmPlanes);
 853     bitmap.SetHBITMAP((WXHBITMAP)hbmp);
 854
 855     if ( !bitmap.Ok() ) {
 856         wxFAIL_MSG(wxT("pasting/dropping invalid bitmap"));
 857
 858         return false;
 859     }
 860
 861     SetBitmap(bitmap);
 862
 863     return true;
 864 }
 865
 866 #if 0
 867
 868 size_t wxBitmapDataObject::GetDataSize(const wxDataFormat& format) const
 869 {
 870     if ( format.GetFormatId() == CF_DIB )
 871     {
 872         // create the DIB
 873         ScreenHDC hdc;
 874
 875         // shouldn't be selected into a DC or GetDIBits() would fail
 876         wxASSERT_MSG( !m_bitmap.GetSelectedInto(),
 877                       wxT("can't copy bitmap selected into wxMemoryDC") );
 878
 879         // first get the info
 880         BITMAPINFO bi;
 881         if ( !GetDIBits(hdc, (HBITMAP)m_bitmap.GetHBITMAP(), 0, 0,
 882                         NULL, &bi, DIB_RGB_COLORS) )
 883         {
 884             wxLogLastError(wxT("GetDIBits(NULL)"));
 885
 886             return 0;
 887         }
 888
 889         return sizeof(BITMAPINFO) + bi.bmiHeader.biSizeImage;
 890     }
 891     else // CF_BITMAP
 892     {
 893         // no data to copy - we don't pass HBITMAP via global memory
 894         return 0;
 895     }
 896 }
 897
 898 bool wxBitmapDataObject::GetDataHere(const wxDataFormat& format,
 899                                      void *pBuf) const
 900 {
 901     wxASSERT_MSG( m_bitmap.Ok(), wxT("copying invalid bitmap") );
 902
 903     HBITMAP hbmp = (HBITMAP)m_bitmap.GetHBITMAP();
 904     if ( format.GetFormatId() == CF_DIB )
 905     {
 906         // create the DIB
 907         ScreenHDC hdc;
 908
 909         // shouldn't be selected into a DC or GetDIBits() would fail
 910         wxASSERT_MSG( !m_bitmap.GetSelectedInto(),
 911                       wxT("can't copy bitmap selected into wxMemoryDC") );
 912
 913         // first get the info
 914         BITMAPINFO *pbi = (BITMAPINFO *)pBuf;
 915         if ( !GetDIBits(hdc, hbmp, 0, 0, NULL, pbi, DIB_RGB_COLORS) )
 916         {
 917             wxLogLastError(wxT("GetDIBits(NULL)"));
 918
 919             return 0;
 920         }
 921
 922         // and now copy the bits
 923         if ( !GetDIBits(hdc, hbmp, 0, pbi->bmiHeader.biHeight, pbi + 1,
 924                         pbi, DIB_RGB_COLORS) )
 925         {
 926             wxLogLastError(wxT("GetDIBits"));
 927
 928             return false;
 929         }
 930     }
 931     else // CF_BITMAP
 932     {
 933         // we put a bitmap handle into pBuf
 934         *(HBITMAP *)pBuf = hbmp;
 935     }
 936
 937     return true;
 938 }
 939
 940 bool wxBitmapDataObject::SetData(const wxDataFormat& format,
 941                                  size_t size, const void *pBuf)
 942 {
 943     HBITMAP hbmp;
 944     if ( format.GetFormatId() == CF_DIB )
 945     {
 946         // here we get BITMAPINFO struct followed by the actual bitmap bits and
 947         // BITMAPINFO starts with BITMAPINFOHEADER followed by colour info
 948         ScreenHDC hdc;
 949
 950         BITMAPINFO *pbmi = (BITMAPINFO *)pBuf;
 951         BITMAPINFOHEADER *pbmih = &pbmi->bmiHeader;
 952         hbmp = CreateDIBitmap(hdc, pbmih, CBM_INIT,
 953                               pbmi + 1, pbmi, DIB_RGB_COLORS);
 954         if ( !hbmp )
 955         {
 956             wxLogLastError(wxT("CreateDIBitmap"));
 957         }
 958
 959         m_bitmap.SetWidth(pbmih->biWidth);
 960         m_bitmap.SetHeight(pbmih->biHeight);
 961     }
 962     else // CF_BITMAP
 963     {
 964         // it's easy with bitmaps: we pass them by handle
 965         hbmp = *(HBITMAP *)pBuf;
 966
 967         BITMAP bmp;
 968         if ( !GetObject(hbmp, sizeof(BITMAP), &bmp) )
 969         {
 970             wxLogLastError(wxT("GetObject(HBITMAP)"));
 971         }
 972
 973         m_bitmap.SetWidth(bmp.bmWidth);
 974         m_bitmap.SetHeight(bmp.bmHeight);
 975         m_bitmap.SetDepth(bmp.bmPlanes);
 976     }
 977
 978     m_bitmap.SetHBITMAP((WXHBITMAP)hbmp);
 979
 980     wxASSERT_MSG( m_bitmap.Ok(), wxT("pasting invalid bitmap") );
 981
 982     return true;
 983 }
 984
 985 #endif // 0
 986
 987 // ----------------------------------------------------------------------------
 988 // wxFileDataObject
 989 // ----------------------------------------------------------------------------
 990
 991 bool wxFileDataObject::SetData(size_t WXUNUSED(size),
 992                                const void *WXUNUSED_IN_WINCE(pData))
 993 {
 994 #ifndef __WXWINCE__
 995     m_filenames.Empty();
 996
 997     // the documentation states that the first member of DROPFILES structure is
 998     // a "DWORD offset of double NUL terminated file list". What they mean by
 999     // this (I wonder if you see it immediately) is that the list starts at
1000     // ((char *)&(pDropFiles.pFiles)) + pDropFiles.pFiles. We're also advised
1001     // to use DragQueryFile to work with this structure, but not told where and
1002     // how to get HDROP.
1003     HDROP hdrop = (HDROP)pData;   // NB: it works, but I'm not sure about it
1004
1005     // get number of files (magic value -1)
1006     UINT nFiles = ::DragQueryFile(hdrop, (unsigned)-1, NULL, 0u);
1007
1008     wxCHECK_MSG ( nFiles != (UINT)-1, FALSE, wxT("wrong HDROP handle") );
1009
1010     // for each file get the length, allocate memory and then get the name
1011     wxString str;
1012     UINT len, n;
1013     for ( n = 0; n < nFiles; n++ ) {
1014         // +1 for terminating NUL
1015         len = ::DragQueryFile(hdrop, n, NULL, 0) + 1;
1016
1017         UINT len2 = ::DragQueryFile(hdrop, n, wxStringBuffer(str, len), len);
1018         m_filenames.Add(str);
1019
1020         if ( len2 != len - 1 ) {
1021             wxLogDebug(wxT("In wxFileDropTarget::OnDrop DragQueryFile returned\
1022  %d characters, %d expected."), len2, len - 1);
1023         }
1024     }
1025
1026     return true;
1027 #else
1028     return false;
1029 #endif
1030 }
1031
1032 void wxFileDataObject::AddFile(const wxString& file)
1033 {
1034     // just add file to filenames array
1035     // all useful data (such as DROPFILES struct) will be
1036     // created later as necessary
1037     m_filenames.Add(file);
1038 }
1039
1040 size_t wxFileDataObject::GetDataSize() const
1041 {
1042 #ifndef __WXWINCE__
1043     // size returned will be the size of the DROPFILES structure, plus the list
1044     // of filesnames (null byte separated), plus a double null at the end
1045
1046     // if no filenames in list, size is 0
1047     if ( m_filenames.empty() )
1048         return 0;
1049
1050 #if wxUSE_UNICODE_MSLU
1051     size_t sizeOfChar;
1052     if ( wxGetOsVersion() == wxOS_WINDOWS_9X )
1053     {
1054         // Win9x always uses ANSI file names and MSLU doesn't help with this
1055         sizeOfChar = sizeof(char);
1056     }
1057     else
1058     {
1059         sizeOfChar = sizeof(wxChar);
1060     }
1061 #else // !wxUSE_UNICODE_MSLU
1062     static const size_t sizeOfChar = sizeof(wxChar);
1063 #endif // wxUSE_UNICODE_MSLU/!wxUSE_UNICODE_MSLU
1064
1065     // inital size of DROPFILES struct + null byte
1066     size_t sz = sizeof(DROPFILES) + sizeOfChar;
1067
1068     const size_t count = m_filenames.size();
1069     for ( size_t i = 0; i < count; i++ )
1070     {
1071         // add filename length plus null byte
1072         size_t len;
1073 #if wxUSE_UNICODE_MSLU
1074         if ( sizeOfChar == sizeof(char) )
1075             len = strlen(m_filenames[i].mb_str(*wxConvFileName));
1076         else
1077 #endif // wxUSE_UNICODE_MSLU
1078             len = m_filenames[i].length();
1079
1080         sz += (len + 1) * sizeOfChar;
1081     }
1082
1083     return sz;
1084 #else
1085     return 0;
1086 #endif
1087 }
1088
1089 bool wxFileDataObject::GetDataHere(void *WXUNUSED_IN_WINCE(pData)) const
1090 {
1091 #ifndef __WXWINCE__
1092     // pData points to an externally allocated memory block
1093     // created using the size returned by GetDataSize()
1094
1095     // if pData is NULL, or there are no files, return
1096     if ( !pData || m_filenames.empty() )
1097         return false;
1098
1099     // convert data pointer to a DROPFILES struct pointer
1100     LPDROPFILES pDrop = (LPDROPFILES) pData;
1101
1102     // initialize DROPFILES struct
1103     pDrop->pFiles = sizeof(DROPFILES);
1104     pDrop->fNC = FALSE;                 // not non-client coords
1105 #if wxUSE_UNICODE_MSLU
1106     pDrop->fWide = wxGetOsVersion() != wxOS_WINDOWS_9X ? TRUE : FALSE;
1107 #else
1108     pDrop->fWide = wxUSE_UNICODE;
1109 #endif
1110
1111     const size_t sizeOfChar = pDrop->fWide ? sizeof(wchar_t) : sizeof(char);
1112
1113     // set start of filenames list (null separated)
1114     BYTE *pbuf = (BYTE *)(pDrop + 1);
1115
1116     const size_t count = m_filenames.size();
1117     for ( size_t i = 0; i < count; i++ )
1118     {
1119         // copy filename to pbuf and add null terminator
1120         size_t len;
1121 #if wxUSE_UNICODE_MSLU
1122         if ( sizeOfChar == sizeof(char) )
1123         {
1124             wxCharBuffer buf(m_filenames[i].mb_str(*wxConvFileName));
1125             len = strlen(buf);
1126             memcpy(pbuf, buf, len*sizeOfChar);
1127         }
1128         else
1129 #endif // wxUSE_UNICODE_MSLU
1130         {
1131             len = m_filenames[i].length();
1132             memcpy(pbuf, m_filenames[i].wx_str(), len*sizeOfChar);
1133         }
1134
1135         pbuf += len*sizeOfChar;
1136
1137         memset(pbuf, 0, sizeOfChar);
1138         pbuf += sizeOfChar;
1139     }
1140
1141     // add final null terminator
1142     memset(pbuf, 0, sizeOfChar);
1143
1144     return true;
1145 #else
1146     return false;
1147 #endif
1148 }
1149
1150 // ----------------------------------------------------------------------------
1151 // wxURLDataObject
1152 // ----------------------------------------------------------------------------
1153
1154 // Work around bug in Wine headers
1155 #if defined(__WINE__) && defined(CFSTR_SHELLURL) && wxUSE_UNICODE
1156 #undef CFSTR_SHELLURL
1157 #define CFSTR_SHELLURL _T("CFSTR_SHELLURL")
1158 #endif
1159
1160 class CFSTR_SHELLURLDataObject : public wxCustomDataObject
1161 {
1162 public:
1163     CFSTR_SHELLURLDataObject() : wxCustomDataObject(CFSTR_SHELLURL) {}
1164
1165     virtual size_t GetBufferOffset( const wxDataFormat& WXUNUSED(format) )
1166     {
1167         return 0;
1168     }
1169
1170     virtual const void* GetSizeFromBuffer( const void* buffer, size_t* size,
1171                                            const wxDataFormat& WXUNUSED(format) )
1172     {
1173         // CFSTR_SHELLURL is _always_ ANSI text
1174         *size = strlen( (const char*)buffer );
1175
1176         return buffer;
1177     }
1178
1179     virtual void* SetSizeInBuffer( void* buffer, size_t WXUNUSED(size),
1180                                    const wxDataFormat& WXUNUSED(format) )
1181     {
1182         return buffer;
1183     }
1184
1185 #if wxUSE_UNICODE
1186     virtual bool GetDataHere( void* buffer ) const
1187     {
1188         // CFSTR_SHELLURL is _always_ ANSI!
1189         wxCharBuffer char_buffer( GetDataSize() );
1190         wxCustomDataObject::GetDataHere( (void*)char_buffer.data() );
1191         wxString unicode_buffer( char_buffer, wxConvLibc );
1192         memcpy( buffer, unicode_buffer.c_str(),
1193                 ( unicode_buffer.length() + 1 ) * sizeof(wxChar) );
1194
1195         return true;
1196     }
1197     virtual bool GetDataHere(const wxDataFormat& WXUNUSED(format),
1198                              void *buf) const
1199         { return GetDataHere(buf); }
1200 #endif
1201
1202     DECLARE_NO_COPY_CLASS(CFSTR_SHELLURLDataObject)
1203 };
1204
1205
1206
1207 wxURLDataObject::wxURLDataObject(const wxString& url)
1208 {
1209     // we support CF_TEXT and CFSTR_SHELLURL formats which are basically the
1210     // same but it seems that some browsers only provide one of them so we have
1211     // to support both
1212     Add(new wxTextDataObject);
1213     Add(new CFSTR_SHELLURLDataObject());
1214
1215     // we don't have any data yet
1216     m_dataObjectLast = NULL;
1217
1218     if ( !url.empty() )
1219         SetURL(url);
1220 }
1221
1222 bool wxURLDataObject::SetData(const wxDataFormat& format,
1223                               size_t len,
1224                               const void *buf)
1225 {
1226     m_dataObjectLast = GetObject(format);
1227
1228     wxCHECK_MSG( m_dataObjectLast, FALSE,
1229                  wxT("unsupported format in wxURLDataObject"));
1230
1231     return m_dataObjectLast->SetData(len, buf);
1232 }
1233
1234 wxString wxURLDataObject::GetURL() const
1235 {
1236     wxString url;
1237     wxCHECK_MSG( m_dataObjectLast, url, _T("no data in wxURLDataObject") );
1238
1239     size_t len = m_dataObjectLast->GetDataSize();
1240
1241     m_dataObjectLast->GetDataHere(wxStringBuffer(url, len));
1242
1243     return url;
1244 }
1245
1246 void wxURLDataObject::SetURL(const wxString& url)
1247 {
1248     wxCharBuffer urlMB(url.mb_str());
1249     if ( urlMB )
1250     {
1251         const size_t len = strlen(urlMB) + 1; // size with trailing NUL
1252         SetData(wxDF_TEXT, len, urlMB);
1253         SetData(wxDataFormat(CFSTR_SHELLURL), len, urlMB);
1254     }
1255
1256     SetData(wxDF_UNICODETEXT, url.length() + 1, url.wc_str());
1257 }
1258
1259 // ----------------------------------------------------------------------------
1260 // private functions
1261 // ----------------------------------------------------------------------------
1262
1263 #ifdef __WXDEBUG__
1264
1265 static const wxChar *GetTymedName(DWORD tymed)
1266 {
1267     static wxChar s_szBuf[128];
1268     switch ( tymed ) {
1269         case TYMED_HGLOBAL:   return wxT("TYMED_HGLOBAL");
1270         case TYMED_FILE:      return wxT("TYMED_FILE");
1271         case TYMED_ISTREAM:   return wxT("TYMED_ISTREAM");
1272         case TYMED_ISTORAGE:  return wxT("TYMED_ISTORAGE");
1273         case TYMED_GDI:       return wxT("TYMED_GDI");
1274         case TYMED_MFPICT:    return wxT("TYMED_MFPICT");
1275         case TYMED_ENHMF:     return wxT("TYMED_ENHMF");
1276         default:
1277             wxSprintf(s_szBuf, wxT("type of media format %ld (unknown)"), tymed);
1278             return s_szBuf;
1279     }
1280 }
1281
1282 #endif // Debug
1283
1284 #else // not using OLE at all
1285
1286 // ----------------------------------------------------------------------------
1287 // wxDataObject
1288 // ----------------------------------------------------------------------------
1289
1290 #if wxUSE_DATAOBJ
1291
1292 wxDataObject::wxDataObject()
1293 {
1294 }
1295
1296 wxDataObject::~wxDataObject()
1297 {
1298 }
1299
1300 void wxDataObject::SetAutoDelete()
1301 {
1302 }
1303
1304 #ifdef __WXDEBUG__
1305 const wxChar *wxDataObject::GetFormatName(wxDataFormat WXUNUSED(format))
1306 {
1307     return NULL;
1308 }
1309 #endif // __WXDEBUG__
1310
1311 #endif // wxUSE_DATAOBJ
1312
1313 #endif // wxUSE_OLE/!wxUSE_OLE
1314
1315