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 license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "dataobj.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #if defined(__BORLANDC__)
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/intl.h"
  33     #include "wx/log.h"
  34 #endif
  35
  36 #include "wx/dataobj.h"
  37
  38 #if wxUSE_OLE && defined(__WIN32__) && !defined(__GNUWIN32_OLD__)
  39
  40 #include "wx/msw/private.h"         // includes <windows.h>
  41
  42 #if wxUSE_NORLANDER_HEADERS
  43   #include <ole2.h>
  44 #endif
  45 #include <oleauto.h>
  46
  47 #ifndef __WIN32__
  48   #include <ole2.h>
  49   #include <olestd.h>
  50 #endif
  51
  52 #include <shlobj.h>
  53
  54 #include "wx/msw/ole/oleutils.h"
  55
  56 #include "wx/msw/dib.h"
  57
  58 #ifdef __WXWINE__
  59 #define LPDROPFILES DROPFILES*
  60 #endif
  61
  62 #ifndef CFSTR_SHELLURL
  63 #define CFSTR_SHELLURL _T("UniformResourceLocator")
  64 #endif
  65
  66 // ----------------------------------------------------------------------------
  67 // functions
  68 // ----------------------------------------------------------------------------
  69
  70 #ifdef __WXDEBUG__
  71     static const wxChar *GetTymedName(DWORD tymed);
  72 #else // !Debug
  73     #define GetTymedName(tymed) _T("")
  74 #endif // Debug/!Debug
  75
  76 // ----------------------------------------------------------------------------
  77 // wxIEnumFORMATETC interface implementation
  78 // ----------------------------------------------------------------------------
  79
  80 class wxIEnumFORMATETC : public IEnumFORMATETC
  81 {
  82 public:
  83     wxIEnumFORMATETC(const wxDataFormat* formats, ULONG nCount);
  84     virtual ~wxIEnumFORMATETC() { delete [] m_formats; }
  85
  86     DECLARE_IUNKNOWN_METHODS;
  87
  88     // IEnumFORMATETC
  89     STDMETHODIMP Next(ULONG celt, FORMATETC *rgelt, ULONG *pceltFetched);
  90     STDMETHODIMP Skip(ULONG celt);
  91     STDMETHODIMP Reset();
  92     STDMETHODIMP Clone(IEnumFORMATETC **ppenum);
  93
  94 private:
  95     CLIPFORMAT *m_formats;  // formats we can provide data in
  96     ULONG       m_nCount,   // number of formats we support
  97                 m_nCurrent; // current enum position
  98 };
  99
 100 // ----------------------------------------------------------------------------
 101 // wxIDataObject implementation of IDataObject interface
 102 // ----------------------------------------------------------------------------
 103
 104 class wxIDataObject : public IDataObject
 105 {
 106 public:
 107     wxIDataObject(wxDataObject *pDataObject);
 108     virtual ~wxIDataObject();
 109
 110     // normally, wxDataObject controls our lifetime (i.e. we're deleted when it
 111     // is), but in some cases, the situation is inversed, that is we delete it
 112     // when this object is deleted - setting this flag enables such logic
 113     void SetDeleteFlag() { m_mustDelete = TRUE; }
 114
 115     DECLARE_IUNKNOWN_METHODS;
 116
 117     // IDataObject
 118     STDMETHODIMP GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium);
 119     STDMETHODIMP GetDataHere(FORMATETC *pformatetc, STGMEDIUM *pmedium);
 120     STDMETHODIMP QueryGetData(FORMATETC *pformatetc);
 121     STDMETHODIMP GetCanonicalFormatEtc(FORMATETC *In, FORMATETC *pOut);
 122     STDMETHODIMP SetData(FORMATETC *pfetc, STGMEDIUM *pmedium, BOOL fRelease);
 123     STDMETHODIMP EnumFormatEtc(DWORD dwDirection, IEnumFORMATETC **ppenumFEtc);
 124     STDMETHODIMP DAdvise(FORMATETC *pfetc, DWORD ad, IAdviseSink *p, DWORD *pdw);
 125     STDMETHODIMP DUnadvise(DWORD dwConnection);
 126     STDMETHODIMP EnumDAdvise(IEnumSTATDATA **ppenumAdvise);
 127
 128 private:
 129     wxDataObject *m_pDataObject;      // pointer to C++ class we belong to
 130
 131     bool m_mustDelete;
 132 };
 133
 134 // ============================================================================
 135 // implementation
 136 // ============================================================================
 137
 138 // ----------------------------------------------------------------------------
 139 // wxDataFormat
 140 // ----------------------------------------------------------------------------
 141
 142 void wxDataFormat::SetId(const wxChar *format)
 143 {
 144     m_format = (wxDataFormat::NativeFormat)::RegisterClipboardFormat(format);
 145     if ( !m_format )
 146     {
 147         wxLogError(_("Couldn't register clipboard format '%s'."), format);
 148     }
 149 }
 150
 151 wxString wxDataFormat::GetId() const
 152 {
 153     static const int max = 256;
 154
 155     wxString s;
 156
 157     wxCHECK_MSG( !IsStandard(), s,
 158                  wxT("name of predefined format cannot be retrieved") );
 159
 160     int len = ::GetClipboardFormatName(m_format, s.GetWriteBuf(max), max);
 161     s.UngetWriteBuf();
 162
 163     if ( !len )
 164     {
 165         wxLogError(_("The clipboard format '%d' doesn't exist."), m_format);
 166     }
 167
 168     return s;
 169 }
 170
 171 // ----------------------------------------------------------------------------
 172 // wxIEnumFORMATETC
 173 // ----------------------------------------------------------------------------
 174
 175 BEGIN_IID_TABLE(wxIEnumFORMATETC)
 176     ADD_IID(Unknown)
 177     ADD_IID(EnumFORMATETC)
 178 END_IID_TABLE;
 179
 180 IMPLEMENT_IUNKNOWN_METHODS(wxIEnumFORMATETC)
 181
 182 wxIEnumFORMATETC::wxIEnumFORMATETC(const wxDataFormat *formats, ULONG nCount)
 183 {
 184     m_nCurrent = 0;
 185     m_nCount = nCount;
 186     m_formats = new CLIPFORMAT[nCount];
 187     for ( ULONG n = 0; n < nCount; n++ ) {
 188         m_formats[n] = formats[n].GetFormatId();
 189     }
 190 }
 191
 192 STDMETHODIMP wxIEnumFORMATETC::Next(ULONG      celt,
 193                                     FORMATETC *rgelt,
 194                                     ULONG     *WXUNUSED(pceltFetched))
 195 {
 196     wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Next"));
 197
 198     if ( celt > 1 ) {
 199         // we only return 1 element at a time - mainly because I'm too lazy to
 200         // implement something which you're never asked for anyhow
 201         return S_FALSE;
 202     }
 203
 204     if ( m_nCurrent < m_nCount ) {
 205         FORMATETC format;
 206         format.cfFormat = m_formats[m_nCurrent++];
 207         format.ptd      = NULL;
 208         format.dwAspect = DVASPECT_CONTENT;
 209         format.lindex   = -1;
 210         format.tymed    = TYMED_HGLOBAL;
 211         *rgelt = format;
 212
 213         return S_OK;
 214     }
 215     else {
 216         // bad index
 217         return S_FALSE;
 218     }
 219 }
 220
 221 STDMETHODIMP wxIEnumFORMATETC::Skip(ULONG celt)
 222 {
 223     wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Skip"));
 224
 225     m_nCurrent += celt;
 226     if ( m_nCurrent < m_nCount )
 227         return S_OK;
 228
 229     // no, can't skip this many elements
 230     m_nCurrent -= celt;
 231
 232     return S_FALSE;
 233 }
 234
 235 STDMETHODIMP wxIEnumFORMATETC::Reset()
 236 {
 237     wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Reset"));
 238
 239     m_nCurrent = 0;
 240
 241     return S_OK;
 242 }
 243
 244 STDMETHODIMP wxIEnumFORMATETC::Clone(IEnumFORMATETC **ppenum)
 245 {
 246     wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Clone"));
 247
 248     // unfortunately, we can't reuse the code in ctor - types are different
 249     wxIEnumFORMATETC *pNew = new wxIEnumFORMATETC(NULL, 0);
 250     pNew->m_nCount = m_nCount;
 251     pNew->m_formats = new CLIPFORMAT[m_nCount];
 252     for ( ULONG n = 0; n < m_nCount; n++ ) {
 253         pNew->m_formats[n] = m_formats[n];
 254     }
 255     pNew->AddRef();
 256     *ppenum = pNew;
 257
 258     return S_OK;
 259 }
 260
 261 // ----------------------------------------------------------------------------
 262 // wxIDataObject
 263 // ----------------------------------------------------------------------------
 264
 265 BEGIN_IID_TABLE(wxIDataObject)
 266     ADD_IID(Unknown)
 267     ADD_IID(DataObject)
 268 END_IID_TABLE;
 269
 270 IMPLEMENT_IUNKNOWN_METHODS(wxIDataObject)
 271
 272 wxIDataObject::wxIDataObject(wxDataObject *pDataObject)
 273 {
 274     m_pDataObject = pDataObject;
 275     m_mustDelete = FALSE;
 276 }
 277
 278 wxIDataObject::~wxIDataObject()
 279 {
 280     if ( m_mustDelete )
 281     {
 282         delete m_pDataObject;
 283     }
 284 }
 285
 286 // get data functions
 287 STDMETHODIMP wxIDataObject::GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium)
 288 {
 289     wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::GetData"));
 290
 291     // is data is in our format?
 292     HRESULT hr = QueryGetData(pformatetcIn);
 293     if ( FAILED(hr) )
 294         return hr;
 295
 296     // for the bitmaps and metafiles we use the handles instead of global memory
 297     // to pass the data
 298     wxDataFormat format = (wxDataFormat::NativeFormat)pformatetcIn->cfFormat;
 299
 300     switch ( format )
 301     {
 302         case wxDF_BITMAP:
 303             pmedium->tymed = TYMED_GDI;
 304             break;
 305
 306         case wxDF_ENHMETAFILE:
 307             pmedium->tymed = TYMED_ENHMF;
 308             break;
 309
 310         case wxDF_METAFILE:
 311             pmedium->hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE,
 312                                            sizeof(METAFILEPICT));
 313             if ( !pmedium->hGlobal ) {
 314                 wxLogLastError(wxT("GlobalAlloc"));
 315                 return E_OUTOFMEMORY;
 316             }
 317             pmedium->tymed = TYMED_MFPICT;
 318             break;
 319
 320         default:
 321             // alloc memory
 322             size_t size = m_pDataObject->GetDataSize(format);
 323             if ( !size ) {
 324                 // it probably means that the method is just not implemented
 325                 wxLogDebug(wxT("Invalid data size - can't be 0"));
 326
 327                 return DV_E_FORMATETC;
 328             }
 329
 330             if ( !format.IsStandard() ) {
 331                 // for custom formats, put the size with the data - alloc the
 332                 // space for it
 333                 // MB: not completely sure this is correct,
 334                 //     even if I can't figure out what's wrong
 335                 size += m_pDataObject->GetBufferOffset( format );
 336             }
 337
 338             HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE, size);
 339             if ( hGlobal == NULL ) {
 340                 wxLogLastError(wxT("GlobalAlloc"));
 341                 return E_OUTOFMEMORY;
 342             }
 343
 344             // copy data
 345             pmedium->tymed   = TYMED_HGLOBAL;
 346             pmedium->hGlobal = hGlobal;
 347     }
 348
 349     pmedium->pUnkForRelease = NULL;
 350
 351     // do copy the data
 352     hr = GetDataHere(pformatetcIn, pmedium);
 353     if ( FAILED(hr) ) {
 354         // free resources we allocated
 355         if ( pmedium->tymed & (TYMED_HGLOBAL | TYMED_MFPICT) ) {
 356             GlobalFree(pmedium->hGlobal);
 357         }
 358
 359         return hr;
 360     }
 361
 362     return S_OK;
 363 }
 364
 365 STDMETHODIMP wxIDataObject::GetDataHere(FORMATETC *pformatetc,
 366                                         STGMEDIUM *pmedium)
 367 {
 368     wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::GetDataHere"));
 369
 370     // put data in caller provided medium
 371     switch ( pmedium->tymed )
 372     {
 373         case TYMED_GDI:
 374             if ( !m_pDataObject->GetDataHere(wxDF_BITMAP, &pmedium->hBitmap) )
 375                 return E_UNEXPECTED;
 376             break;
 377
 378         case TYMED_ENHMF:
 379             if ( !m_pDataObject->GetDataHere(wxDF_ENHMETAFILE,
 380                                              &pmedium->hEnhMetaFile) )
 381                 return E_UNEXPECTED;
 382             break;
 383
 384         case TYMED_MFPICT:
 385             // fall through - we pass METAFILEPICT through HGLOBAL
 386
 387         case TYMED_HGLOBAL:
 388             {
 389                 // copy data
 390                 HGLOBAL hGlobal = pmedium->hGlobal;
 391                 void *pBuf = GlobalLock(hGlobal);
 392                 if ( pBuf == NULL ) {
 393                     wxLogLastError(wxT("GlobalLock"));
 394                     return E_OUTOFMEMORY;
 395                 }
 396
 397                 wxDataFormat format = pformatetc->cfFormat;
 398                 if ( !format.IsStandard() ) {
 399                     // for custom formats, put the size with the data
 400                     pBuf = m_pDataObject->SetSizeInBuffer( pBuf, GlobalSize(hGlobal), format );
 401                 }
 402
 403                 if ( !m_pDataObject->GetDataHere(format, pBuf) )
 404                     return E_UNEXPECTED;
 405
 406                 GlobalUnlock(hGlobal);
 407             }
 408             break;
 409
 410         default:
 411             return DV_E_TYMED;
 412     }
 413
 414     return S_OK;
 415 }
 416
 417 // set data functions
 418 STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
 419                                     STGMEDIUM *pmedium,
 420                                     BOOL       fRelease)
 421 {
 422     wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::SetData"));
 423
 424     switch ( pmedium->tymed )
 425     {
 426         case TYMED_GDI:
 427             m_pDataObject->SetData(wxDF_BITMAP, 0, &pmedium->hBitmap);
 428             break;
 429
 430         case TYMED_ENHMF:
 431             m_pDataObject->SetData(wxDF_ENHMETAFILE, 0, &pmedium->hEnhMetaFile);
 432             break;
 433
 434         case TYMED_MFPICT:
 435             // fall through - we pass METAFILEPICT through HGLOBAL
 436         case TYMED_HGLOBAL:
 437             {
 438                 wxDataFormat format = pformatetc->cfFormat;
 439
 440                 // this is quite weird, but for file drag and drop, explorer
 441                 // calls our SetData() with the formats we do *not* support!
 442                 //
 443                 // as we can't fix this bug in explorer (it's a bug because it
 444                 // should only use formats returned by EnumFormatEtc), do the
 445                 // check here
 446                 if ( !m_pDataObject->IsSupportedFormat(format) ) {
 447                     // go away!
 448                     return DV_E_FORMATETC;
 449                 }
 450
 451                 // copy data
 452                 const void *pBuf = GlobalLock(pmedium->hGlobal);
 453                 if ( pBuf == NULL ) {
 454                     wxLogLastError(wxT("GlobalLock"));
 455
 456                     return E_OUTOFMEMORY;
 457                 }
 458
 459                 // we've got a problem with SetData() here because the base
 460                 // class version requires the size parameter which we don't
 461                 // have anywhere in OLE data transfer - so we need to
 462                 // synthetise it for known formats and we suppose that all data
 463                 // in custom formats starts with a DWORD containing the size
 464                 size_t size;
 465                 switch ( format )
 466                 {
 467                     case CF_TEXT:
 468                     case CF_OEMTEXT:
 469                         size = strlen((const char *)pBuf);
 470                         break;
 471 #if !defined(__WATCOMC__) && ! (defined(__BORLANDC__) && (__BORLANDC__ < 0x500))
 472                     case CF_UNICODETEXT:
 473 #if ( defined(__BORLANDC__) && (__BORLANDC__ > 0x530) ) \
 474     || ( defined(__MWERKS__) && defined(__WXMSW__) )
 475                         size = std::wcslen((const wchar_t *)pBuf) * sizeof(wchar_t);
 476 #else
 477                         size = ::wcslen((const wchar_t *)pBuf) * sizeof(wchar_t);
 478 #endif
 479                         break;
 480 #endif
 481                     case CF_BITMAP:
 482                     case CF_HDROP:
 483                         // these formats don't use size at all, anyhow (but
 484                         // pass data by handle, which is always a single DWORD)
 485                         size = 0;
 486                         break;
 487
 488                     case CF_DIB:
 489                         // the handler will calculate size itself (it's too
 490                         // complicated to do it here)
 491                         size = 0;
 492                         break;
 493
 494                     case CF_METAFILEPICT:
 495                         size = sizeof(METAFILEPICT);
 496                         break;
 497
 498                     default:
 499                         {
 500                             // we suppose that the size precedes the data
 501                             pBuf = m_pDataObject->GetSizeFromBuffer( pBuf, &size, format );
 502                             if (! format.IsStandard() ) {
 503                                 // see GetData for coresponding increment
 504                                 size -= m_pDataObject->GetBufferOffset( format  );
 505                             }
 506                         }
 507                 }
 508
 509                 bool ok = m_pDataObject->SetData(format, size, pBuf);
 510
 511                 GlobalUnlock(pmedium->hGlobal);
 512
 513                 if ( !ok ) {
 514                     return E_UNEXPECTED;
 515                 }
 516             }
 517             break;
 518
 519         default:
 520             return DV_E_TYMED;
 521     }
 522
 523     if ( fRelease ) {
 524         // we own the medium, so we must release it - but do *not* free any
 525         // data we pass by handle because we have copied it elsewhere
 526         switch ( pmedium->tymed )
 527         {
 528             case TYMED_GDI:
 529                 pmedium->hBitmap = 0;
 530                 break;
 531
 532             case TYMED_MFPICT:
 533                 pmedium->hMetaFilePict = 0;
 534                 break;
 535
 536             case TYMED_ENHMF:
 537                 pmedium->hEnhMetaFile = 0;
 538                 break;
 539         }
 540
 541         ReleaseStgMedium(pmedium);
 542     }
 543
 544     return S_OK;
 545 }
 546
 547 // information functions
 548 STDMETHODIMP wxIDataObject::QueryGetData(FORMATETC *pformatetc)
 549 {
 550     // do we accept data in this format?
 551     if ( pformatetc == NULL ) {
 552         wxLogTrace(wxTRACE_OleCalls,
 553                    wxT("wxIDataObject::QueryGetData: invalid ptr."));
 554
 555         return E_INVALIDARG;
 556     }
 557
 558     // the only one allowed by current COM implementation
 559     if ( pformatetc->lindex != -1 ) {
 560         wxLogTrace(wxTRACE_OleCalls,
 561                    wxT("wxIDataObject::QueryGetData: bad lindex %ld"),
 562                    pformatetc->lindex);
 563
 564         return DV_E_LINDEX;
 565     }
 566
 567     // we don't support anything other (THUMBNAIL, ICON, DOCPRINT...)
 568     if ( pformatetc->dwAspect != DVASPECT_CONTENT ) {
 569         wxLogTrace(wxTRACE_OleCalls,
 570                    wxT("wxIDataObject::QueryGetData: bad dwAspect %ld"),
 571                    pformatetc->dwAspect);
 572
 573         return DV_E_DVASPECT;
 574     }
 575
 576     // and now check the type of data requested
 577     wxDataFormat format = pformatetc->cfFormat;
 578     if ( m_pDataObject->IsSupportedFormat(format) ) {
 579         wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::QueryGetData: %s ok"),
 580                    wxGetFormatName(format));
 581     }
 582     else {
 583         wxLogTrace(wxTRACE_OleCalls,
 584                    wxT("wxIDataObject::QueryGetData: %s unsupported"),
 585                    wxGetFormatName(format));
 586
 587         return DV_E_FORMATETC;
 588     }
 589
 590     // we only transfer data by global memory, except for some particular cases
 591     DWORD tymed = pformatetc->tymed;
 592     if ( (format == wxDF_BITMAP && !(tymed & TYMED_GDI)) &&
 593          !(tymed & TYMED_HGLOBAL) ) {
 594         // it's not what we're waiting for
 595         wxLogTrace(wxTRACE_OleCalls,
 596                    wxT("wxIDataObject::QueryGetData: %s != %s"),
 597                    GetTymedName(tymed),
 598                    GetTymedName(format == wxDF_BITMAP ? TYMED_GDI
 599                                                       : TYMED_HGLOBAL));
 600
 601         return DV_E_TYMED;
 602     }
 603
 604     return S_OK;
 605 }
 606
 607 STDMETHODIMP wxIDataObject::GetCanonicalFormatEtc(FORMATETC *WXUNUSED(pFormatetcIn),
 608                                                   FORMATETC *pFormatetcOut)
 609 {
 610     wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::GetCanonicalFormatEtc"));
 611
 612     // TODO we might want something better than this trivial implementation here
 613     if ( pFormatetcOut != NULL )
 614         pFormatetcOut->ptd = NULL;
 615
 616     return DATA_S_SAMEFORMATETC;
 617 }
 618
 619 STDMETHODIMP wxIDataObject::EnumFormatEtc(DWORD dwDir,
 620                                           IEnumFORMATETC **ppenumFormatEtc)
 621 {
 622     wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::EnumFormatEtc"));
 623
 624     wxDataObject::Direction dir = dwDir == DATADIR_GET ? wxDataObject::Get
 625                                                        : wxDataObject::Set;
 626
 627     size_t nFormatCount = m_pDataObject->GetFormatCount(dir);
 628     wxDataFormat format;
 629     wxDataFormat *formats;
 630     formats = nFormatCount == 1 ? &format : new wxDataFormat[nFormatCount];
 631     m_pDataObject->GetAllFormats(formats, dir);
 632
 633     wxIEnumFORMATETC *pEnum = new wxIEnumFORMATETC(formats, nFormatCount);
 634     pEnum->AddRef();
 635     *ppenumFormatEtc = pEnum;
 636
 637     if ( formats != &format ) {
 638         delete [] formats;
 639     }
 640
 641     return S_OK;
 642 }
 643
 644 // ----------------------------------------------------------------------------
 645 // advise sink functions (not implemented)
 646 // ----------------------------------------------------------------------------
 647
 648 STDMETHODIMP wxIDataObject::DAdvise(FORMATETC   *WXUNUSED(pformatetc),
 649                                     DWORD        WXUNUSED(advf),
 650                                     IAdviseSink *WXUNUSED(pAdvSink),
 651                                     DWORD       *WXUNUSED(pdwConnection))
 652 {
 653   return OLE_E_ADVISENOTSUPPORTED;
 654 }
 655
 656 STDMETHODIMP wxIDataObject::DUnadvise(DWORD WXUNUSED(dwConnection))
 657 {
 658   return OLE_E_ADVISENOTSUPPORTED;
 659 }
 660
 661 STDMETHODIMP wxIDataObject::EnumDAdvise(IEnumSTATDATA **WXUNUSED(ppenumAdvise))
 662 {
 663   return OLE_E_ADVISENOTSUPPORTED;
 664 }
 665
 666 // ----------------------------------------------------------------------------
 667 // wxDataObject
 668 // ----------------------------------------------------------------------------
 669
 670 wxDataObject::wxDataObject()
 671 {
 672     m_pIDataObject = new wxIDataObject(this);
 673     m_pIDataObject->AddRef();
 674 }
 675
 676 wxDataObject::~wxDataObject()
 677 {
 678     ReleaseInterface(m_pIDataObject);
 679 }
 680
 681 void wxDataObject::SetAutoDelete()
 682 {
 683     ((wxIDataObject *)m_pIDataObject)->SetDeleteFlag();
 684     m_pIDataObject->Release();
 685
 686     // so that the dtor doesnt' crash
 687     m_pIDataObject = NULL;
 688 }
 689
 690 size_t wxDataObject::GetBufferOffset( const wxDataFormat& WXUNUSED(format) )
 691 {
 692     return sizeof(size_t);
 693 }
 694
 695 const void* wxDataObject::GetSizeFromBuffer( const void* buffer, size_t* size,
 696                                              const wxDataFormat& WXUNUSED(format) )
 697 {
 698     size_t* p = (size_t*)buffer;
 699     *size = *p;
 700
 701     return p + 1;
 702 }
 703
 704 void* wxDataObject::SetSizeInBuffer( void* buffer, size_t size,
 705                                        const wxDataFormat& WXUNUSED(format) )
 706 {
 707     size_t* p = (size_t*)buffer;
 708     *p = size;
 709
 710     return p + 1;
 711 }
 712
 713 #ifdef __WXDEBUG__
 714
 715 const wxChar *wxDataObject::GetFormatName(wxDataFormat format)
 716 {
 717     // case 'xxx' is not a valid value for switch of enum 'wxDataFormat'
 718     #ifdef __VISUALC__
 719         #pragma warning(disable:4063)
 720     #endif // VC++
 721
 722     static wxChar s_szBuf[256];
 723     switch ( format ) {
 724         case CF_TEXT:         return wxT("CF_TEXT");
 725         case CF_BITMAP:       return wxT("CF_BITMAP");
 726         case CF_METAFILEPICT: return wxT("CF_METAFILEPICT");
 727         case CF_SYLK:         return wxT("CF_SYLK");
 728         case CF_DIF:          return wxT("CF_DIF");
 729         case CF_TIFF:         return wxT("CF_TIFF");
 730         case CF_OEMTEXT:      return wxT("CF_OEMTEXT");
 731         case CF_DIB:          return wxT("CF_DIB");
 732         case CF_PALETTE:      return wxT("CF_PALETTE");
 733         case CF_PENDATA:      return wxT("CF_PENDATA");
 734         case CF_RIFF:         return wxT("CF_RIFF");
 735         case CF_WAVE:         return wxT("CF_WAVE");
 736         case CF_UNICODETEXT:  return wxT("CF_UNICODETEXT");
 737         case CF_ENHMETAFILE:  return wxT("CF_ENHMETAFILE");
 738         case CF_HDROP:        return wxT("CF_HDROP");
 739         case CF_LOCALE:       return wxT("CF_LOCALE");
 740
 741         default:
 742             if ( !::GetClipboardFormatName(format, s_szBuf, WXSIZEOF(s_szBuf)) )
 743             {
 744                 // it must be a new predefined format we don't know the name of
 745                 wxSprintf(s_szBuf, wxT("unknown CF (0x%04x)"), format.GetFormatId());
 746             }
 747
 748             return s_szBuf;
 749     }
 750
 751     #ifdef __VISUALC__
 752         #pragma warning(default:4063)
 753     #endif // VC++
 754 }
 755
 756 #endif // Debug
 757
 758 // ----------------------------------------------------------------------------
 759 // wxBitmapDataObject supports CF_DIB format
 760 // ----------------------------------------------------------------------------
 761
 762 size_t wxBitmapDataObject::GetDataSize() const
 763 {
 764     return wxConvertBitmapToDIB(NULL, GetBitmap());
 765 }
 766
 767 bool wxBitmapDataObject::GetDataHere(void *buf) const
 768 {
 769     return wxConvertBitmapToDIB((LPBITMAPINFO)buf, GetBitmap()) != 0;
 770 }
 771
 772 bool wxBitmapDataObject::SetData(size_t WXUNUSED(len), const void *buf)
 773 {
 774     wxBitmap bitmap(wxConvertDIBToBitmap((const LPBITMAPINFO)buf));
 775
 776     if ( !bitmap.Ok() ) {
 777         wxFAIL_MSG(wxT("pasting/dropping invalid bitmap"));
 778
 779         return FALSE;
 780     }
 781
 782     SetBitmap(bitmap);
 783
 784     return TRUE;
 785 }
 786
 787 // ----------------------------------------------------------------------------
 788 // wxBitmapDataObject2 supports CF_BITMAP format
 789 // ----------------------------------------------------------------------------
 790
 791 // the bitmaps aren't passed by value as other types of data (i.e. by copying
 792 // the data into a global memory chunk and passing it to the clipboard or
 793 // another application or whatever), but by handle, so these generic functions
 794 // don't make much sense to them.
 795
 796 size_t wxBitmapDataObject2::GetDataSize() const
 797 {
 798     return 0;
 799 }
 800
 801 bool wxBitmapDataObject2::GetDataHere(void *pBuf) const
 802 {
 803     // we put a bitmap handle into pBuf
 804     *(WXHBITMAP *)pBuf = GetBitmap().GetHBITMAP();
 805
 806     return TRUE;
 807 }
 808
 809 bool wxBitmapDataObject2::SetData(size_t WXUNUSED(len), const void *pBuf)
 810 {
 811     HBITMAP hbmp = *(HBITMAP *)pBuf;
 812
 813     BITMAP bmp;
 814     if ( !GetObject(hbmp, sizeof(BITMAP), &bmp) )
 815     {
 816         wxLogLastError(wxT("GetObject(HBITMAP)"));
 817     }
 818
 819     wxBitmap bitmap(bmp.bmWidth, bmp.bmHeight, bmp.bmPlanes);
 820     bitmap.SetHBITMAP((WXHBITMAP)hbmp);
 821
 822     if ( !bitmap.Ok() ) {
 823         wxFAIL_MSG(wxT("pasting/dropping invalid bitmap"));
 824
 825         return FALSE;
 826     }
 827
 828     SetBitmap(bitmap);
 829
 830     return TRUE;
 831 }
 832
 833 #if 0
 834
 835 size_t wxBitmapDataObject::GetDataSize(const wxDataFormat& format) const
 836 {
 837     if ( format.GetFormatId() == CF_DIB )
 838     {
 839         // create the DIB
 840         ScreenHDC hdc;
 841
 842         // shouldn't be selected into a DC or GetDIBits() would fail
 843         wxASSERT_MSG( !m_bitmap.GetSelectedInto(),
 844                       wxT("can't copy bitmap selected into wxMemoryDC") );
 845
 846         // first get the info
 847         BITMAPINFO bi;
 848         if ( !GetDIBits(hdc, (HBITMAP)m_bitmap.GetHBITMAP(), 0, 0,
 849                         NULL, &bi, DIB_RGB_COLORS) )
 850         {
 851             wxLogLastError(wxT("GetDIBits(NULL)"));
 852
 853             return 0;
 854         }
 855
 856         return sizeof(BITMAPINFO) + bi.bmiHeader.biSizeImage;
 857     }
 858     else // CF_BITMAP
 859     {
 860         // no data to copy - we don't pass HBITMAP via global memory
 861         return 0;
 862     }
 863 }
 864
 865 bool wxBitmapDataObject::GetDataHere(const wxDataFormat& format,
 866                                      void *pBuf) const
 867 {
 868     wxASSERT_MSG( m_bitmap.Ok(), wxT("copying invalid bitmap") );
 869
 870     HBITMAP hbmp = (HBITMAP)m_bitmap.GetHBITMAP();
 871     if ( format.GetFormatId() == CF_DIB )
 872     {
 873         // create the DIB
 874         ScreenHDC hdc;
 875
 876         // shouldn't be selected into a DC or GetDIBits() would fail
 877         wxASSERT_MSG( !m_bitmap.GetSelectedInto(),
 878                       wxT("can't copy bitmap selected into wxMemoryDC") );
 879
 880         // first get the info
 881         BITMAPINFO *pbi = (BITMAPINFO *)pBuf;
 882         if ( !GetDIBits(hdc, hbmp, 0, 0, NULL, pbi, DIB_RGB_COLORS) )
 883         {
 884             wxLogLastError(wxT("GetDIBits(NULL)"));
 885
 886             return 0;
 887         }
 888
 889         // and now copy the bits
 890         if ( !GetDIBits(hdc, hbmp, 0, pbi->bmiHeader.biHeight, pbi + 1,
 891                         pbi, DIB_RGB_COLORS) )
 892         {
 893             wxLogLastError(wxT("GetDIBits"));
 894
 895             return FALSE;
 896         }
 897     }
 898     else // CF_BITMAP
 899     {
 900         // we put a bitmap handle into pBuf
 901         *(HBITMAP *)pBuf = hbmp;
 902     }
 903
 904     return TRUE;
 905 }
 906
 907 bool wxBitmapDataObject::SetData(const wxDataFormat& format,
 908                                  size_t size, const void *pBuf)
 909 {
 910     HBITMAP hbmp;
 911     if ( format.GetFormatId() == CF_DIB )
 912     {
 913         // here we get BITMAPINFO struct followed by the actual bitmap bits and
 914         // BITMAPINFO starts with BITMAPINFOHEADER followed by colour info
 915         ScreenHDC hdc;
 916
 917         BITMAPINFO *pbmi = (BITMAPINFO *)pBuf;
 918         BITMAPINFOHEADER *pbmih = &pbmi->bmiHeader;
 919         hbmp = CreateDIBitmap(hdc, pbmih, CBM_INIT,
 920                               pbmi + 1, pbmi, DIB_RGB_COLORS);
 921         if ( !hbmp )
 922         {
 923             wxLogLastError(wxT("CreateDIBitmap"));
 924         }
 925
 926         m_bitmap.SetWidth(pbmih->biWidth);
 927         m_bitmap.SetHeight(pbmih->biHeight);
 928     }
 929     else // CF_BITMAP
 930     {
 931         // it's easy with bitmaps: we pass them by handle
 932         hbmp = *(HBITMAP *)pBuf;
 933
 934         BITMAP bmp;
 935         if ( !GetObject(hbmp, sizeof(BITMAP), &bmp) )
 936         {
 937             wxLogLastError(wxT("GetObject(HBITMAP)"));
 938         }
 939
 940         m_bitmap.SetWidth(bmp.bmWidth);
 941         m_bitmap.SetHeight(bmp.bmHeight);
 942         m_bitmap.SetDepth(bmp.bmPlanes);
 943     }
 944
 945     m_bitmap.SetHBITMAP((WXHBITMAP)hbmp);
 946
 947     wxASSERT_MSG( m_bitmap.Ok(), wxT("pasting invalid bitmap") );
 948
 949     return TRUE;
 950 }
 951
 952 #endif // 0
 953
 954 // ----------------------------------------------------------------------------
 955 // wxFileDataObject
 956 // ----------------------------------------------------------------------------
 957
 958 bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *pData)
 959 {
 960     m_filenames.Empty();
 961
 962     // the documentation states that the first member of DROPFILES structure is
 963     // a "DWORD offset of double NUL terminated file list". What they mean by
 964     // this (I wonder if you see it immediately) is that the list starts at
 965     // ((char *)&(pDropFiles.pFiles)) + pDropFiles.pFiles. We're also advised
 966     // to use DragQueryFile to work with this structure, but not told where and
 967     // how to get HDROP.
 968     HDROP hdrop = (HDROP)pData;   // NB: it works, but I'm not sure about it
 969
 970     // get number of files (magic value -1)
 971     UINT nFiles = ::DragQueryFile(hdrop, (unsigned)-1, NULL, 0u);
 972
 973     wxCHECK_MSG ( nFiles != (UINT)-1, FALSE, wxT("wrong HDROP handle") );
 974
 975     // for each file get the length, allocate memory and then get the name
 976     wxString str;
 977     UINT len, n;
 978     for ( n = 0; n < nFiles; n++ ) {
 979         // +1 for terminating NUL
 980         len = ::DragQueryFile(hdrop, n, NULL, 0) + 1;
 981
 982         UINT len2 = ::DragQueryFile(hdrop, n, str.GetWriteBuf(len), len);
 983         str.UngetWriteBuf();
 984         m_filenames.Add(str);
 985
 986         if ( len2 != len - 1 ) {
 987             wxLogDebug(wxT("In wxFileDropTarget::OnDrop DragQueryFile returned\
 988  %d characters, %d expected."), len2, len - 1);
 989         }
 990     }
 991
 992     return TRUE;
 993 }
 994
 995 void wxFileDataObject::AddFile(const wxString& file)
 996 {
 997     // just add file to filenames array
 998     // all useful data (such as DROPFILES struct) will be
 999     // created later as necessary
1000     m_filenames.Add(file);
1001 }
1002
1003 size_t wxFileDataObject::GetDataSize() const
1004 {
1005     // size returned will be the size of the DROPFILES structure,
1006     // plus the list of filesnames (null byte separated), plus
1007     // a double null at the end
1008
1009     // if no filenames in list, size is 0
1010     if ( m_filenames.GetCount() == 0 )
1011         return 0;
1012
1013     // inital size of DROPFILES struct + null byte
1014     size_t sz = sizeof(DROPFILES) + 1;
1015
1016     size_t count = m_filenames.GetCount();
1017     for ( size_t i = 0; i < count; i++ )
1018     {
1019         // add filename length plus null byte
1020         sz += m_filenames[i].Len() + 1;
1021     }
1022
1023     return sz;
1024 }
1025
1026 bool wxFileDataObject::GetDataHere(void *pData) const
1027 {
1028     // pData points to an externally allocated memory block
1029     // created using the size returned by GetDataSize()
1030
1031     // if pData is NULL, or there are no files, return
1032     if ( !pData || m_filenames.GetCount() == 0 )
1033         return FALSE;
1034
1035     // convert data pointer to a DROPFILES struct pointer
1036     LPDROPFILES pDrop = (LPDROPFILES) pData;
1037
1038     // initialize DROPFILES struct
1039     pDrop->pFiles = sizeof(DROPFILES);
1040     pDrop->fNC = FALSE;                 // not non-client coords
1041 #if wxUSE_UNICODE
1042     pDrop->fWide = TRUE;
1043 #else // ANSI
1044     pDrop->fWide = FALSE;
1045 #endif // Unicode/Ansi
1046
1047     // set start of filenames list (null separated)
1048     wxChar *pbuf = (wxChar*) ((BYTE *)pDrop + sizeof(DROPFILES));
1049
1050     size_t count = m_filenames.GetCount();
1051     for (size_t i = 0; i < count; i++ )
1052     {
1053         // copy filename to pbuf and add null terminator
1054         size_t len = m_filenames[i].Len();
1055         memcpy(pbuf, m_filenames[i], len);
1056         pbuf += len;
1057         *pbuf++ = wxT('\0');
1058     }
1059
1060     // add final null terminator
1061     *pbuf = wxT('\0');
1062
1063     return TRUE;
1064 }
1065
1066 // ----------------------------------------------------------------------------
1067 // wxURLDataObject
1068 // ----------------------------------------------------------------------------
1069
1070
1071 class CFSTR_SHELLURLDataObject : public wxCustomDataObject
1072 {
1073 public:
1074     CFSTR_SHELLURLDataObject() : wxCustomDataObject(CFSTR_SHELLURL) {}
1075 protected:
1076     virtual size_t GetBufferOffset( const wxDataFormat& WXUNUSED(format) )
1077     {
1078         return 0;
1079     }
1080
1081     virtual const void* GetSizeFromBuffer( const void* buffer, size_t* size,
1082                                            const wxDataFormat& WXUNUSED(format) )
1083     {
1084         // CFSTR_SHELLURL is _always_ ANSI text
1085         *size = strlen( (const char*)buffer );
1086
1087         return buffer;
1088     }
1089
1090     virtual void* SetSizeInBuffer( void* buffer, size_t WXUNUSED(size),
1091                                    const wxDataFormat& WXUNUSED(format) )
1092     {
1093         return buffer;
1094     }
1095
1096 #if wxUSE_UNICODE
1097     virtual bool GetDataHere( void* buffer ) const
1098     {
1099         // CFSTR_SHELLURL is _always_ ANSI!
1100         wxCharBuffer char_buffer( GetDataSize() );
1101         wxCustomDataObject::GetDataHere( (void*)char_buffer.data() );
1102         wxString unicode_buffer( char_buffer );
1103         memcpy( buffer, unicode_buffer.c_str(),
1104                 ( unicode_buffer.length() + 1 ) * sizeof(wxChar) );
1105
1106         return TRUE;
1107     }
1108 #endif
1109 };
1110
1111
1112
1113 wxURLDataObject::wxURLDataObject()
1114 {
1115     // we support CF_TEXT and CFSTR_SHELLURL formats which are basicly the same
1116     // but it seems that some browsers only provide one of them so we have to
1117     // support both
1118     Add(new wxTextDataObject);
1119     Add(new CFSTR_SHELLURLDataObject());
1120
1121     // we don't have any data yet
1122     m_dataObjectLast = NULL;
1123 }
1124
1125 bool wxURLDataObject::SetData(const wxDataFormat& format,
1126                               size_t len,
1127                               const void *buf)
1128 {
1129     m_dataObjectLast = GetObject(format);
1130
1131     wxCHECK_MSG( m_dataObjectLast, FALSE,
1132                  wxT("unsupported format in wxURLDataObject"));
1133
1134     return m_dataObjectLast->SetData(len, buf);
1135 }
1136
1137 wxString wxURLDataObject::GetURL() const
1138 {
1139     wxString url;
1140     wxCHECK_MSG( m_dataObjectLast, url, _T("no data in wxURLDataObject") );
1141
1142     size_t len = m_dataObjectLast->GetDataSize();
1143
1144     m_dataObjectLast->GetDataHere(url.GetWriteBuf(len));
1145     url.UngetWriteBuf();
1146
1147     return url;
1148 }
1149
1150 void wxURLDataObject::SetURL(const wxString& url)
1151 {
1152     SetData(wxDataFormat(wxUSE_UNICODE ? wxDF_UNICODETEXT : wxDF_TEXT),
1153             url.Length()+1, url.c_str());
1154
1155     // CFSTR_SHELLURL is always supposed to be ANSI...
1156     wxWX2MBbuf urlA = (wxWX2MBbuf)url.mbc_str();
1157     size_t len = strlen(urlA);
1158     SetData(wxDataFormat(CFSTR_SHELLURL), len+1, (const char*)urlA);
1159 }
1160
1161 // ----------------------------------------------------------------------------
1162 // private functions
1163 // ----------------------------------------------------------------------------
1164
1165 static size_t wxGetNumOfBitmapColors(size_t bitsPerPixel)
1166 {
1167     switch ( bitsPerPixel )
1168     {
1169         case 1:
1170             // monochrome bitmap, 2 entries
1171             return 2;
1172
1173         case 4:
1174             return 16;
1175
1176         case 8:
1177             return 256;
1178
1179         case 24:
1180             // may be used with 24bit bitmaps, but we don't use it here - fall
1181             // through
1182
1183         case 16:
1184         case 32:
1185             // bmiColors not used at all with these bitmaps
1186             return 0;
1187
1188         default:
1189             wxFAIL_MSG( wxT("unknown bitmap format") );
1190             return 0;
1191     }
1192 }
1193
1194 size_t wxConvertBitmapToDIB(LPBITMAPINFO pbi, const wxBitmap& bitmap)
1195 {
1196     wxASSERT_MSG( bitmap.Ok(), wxT("invalid bmp can't be converted to DIB") );
1197
1198     // shouldn't be selected into a DC or GetDIBits() would fail
1199     wxASSERT_MSG( !bitmap.GetSelectedInto(),
1200                   wxT("can't copy bitmap selected into wxMemoryDC") );
1201
1202     // prepare all the info we need
1203     BITMAP bm;
1204     HBITMAP hbmp = (HBITMAP)bitmap.GetHBITMAP();
1205     if ( !GetObject(hbmp, sizeof(bm), &bm) )
1206     {
1207         wxLogLastError(wxT("GetObject(bitmap)"));
1208
1209         return 0;
1210     }
1211
1212     // calculate the number of bits per pixel and the number of items in
1213     // bmiColors array (whose meaning depends on the bitmap format)
1214     WORD biBits = bm.bmPlanes * bm.bmBitsPixel;
1215     WORD biColors = (WORD)wxGetNumOfBitmapColors(biBits);
1216
1217     BITMAPINFO bi2;
1218
1219     bool wantSizeOnly = pbi == NULL;
1220     if ( wantSizeOnly )
1221         pbi = &bi2;
1222
1223     // just for convenience
1224     BITMAPINFOHEADER& bi = pbi->bmiHeader;
1225
1226     bi.biSize = sizeof(BITMAPINFOHEADER);
1227     bi.biWidth = bm.bmWidth;
1228     bi.biHeight = bm.bmHeight;
1229     bi.biPlanes = 1;
1230     bi.biBitCount = biBits;
1231     bi.biCompression = BI_RGB;
1232     bi.biSizeImage = 0;
1233     bi.biXPelsPerMeter = 0;
1234     bi.biYPelsPerMeter = 0;
1235     bi.biClrUsed = 0;
1236     bi.biClrImportant = 0;
1237
1238     // memory we need for BITMAPINFO only
1239     DWORD dwLen = bi.biSize + biColors * sizeof(RGBQUAD);
1240
1241     // first get the image size
1242     ScreenHDC hdc;
1243     if ( !GetDIBits(hdc, hbmp, 0, bi.biHeight, NULL, pbi, DIB_RGB_COLORS) )
1244     {
1245         wxLogLastError(wxT("GetDIBits(NULL)"));
1246
1247         return 0;
1248     }
1249
1250     if ( wantSizeOnly )
1251     {
1252         // size of the header + size of the image
1253         return dwLen + bi.biSizeImage;
1254     }
1255
1256     // and now copy the bits
1257     void *image = (char *)pbi + dwLen;
1258     if ( !GetDIBits(hdc, hbmp, 0, bi.biHeight, image, pbi, DIB_RGB_COLORS) )
1259     {
1260         wxLogLastError(wxT("GetDIBits"));
1261
1262         return 0;
1263     }
1264
1265     return dwLen + bi.biSizeImage;
1266 }
1267
1268 wxBitmap wxConvertDIBToBitmap(const LPBITMAPINFO pbmi)
1269 {
1270     // here we get BITMAPINFO struct followed by the actual bitmap bits and
1271     // BITMAPINFO starts with BITMAPINFOHEADER followed by colour info
1272     const BITMAPINFOHEADER *pbmih = &pbmi->bmiHeader;
1273
1274     // biClrUsed has the number of colors, unless it's 0
1275     int numColors = pbmih->biClrUsed;
1276     if (numColors==0)
1277     {
1278         numColors = wxGetNumOfBitmapColors(pbmih->biBitCount);
1279     }
1280
1281     // offset of image from the beginning of the header
1282     DWORD ofs = numColors * sizeof(RGBQUAD);
1283     void *image = (char *)pbmih + sizeof(BITMAPINFOHEADER) + ofs;
1284
1285     ScreenHDC hdc;
1286     HBITMAP hbmp = CreateDIBitmap(hdc, pbmih, CBM_INIT,
1287                                   image, pbmi, DIB_RGB_COLORS);
1288     if ( !hbmp )
1289     {
1290         wxLogLastError(wxT("CreateDIBitmap"));
1291     }
1292
1293     wxBitmap bitmap(pbmih->biWidth, pbmih->biHeight, pbmih->biBitCount);
1294     bitmap.SetHBITMAP((WXHBITMAP)hbmp);
1295
1296     return bitmap;
1297 }
1298
1299 #ifdef __WXDEBUG__
1300
1301 static const wxChar *GetTymedName(DWORD tymed)
1302 {
1303     static wxChar s_szBuf[128];
1304     switch ( tymed ) {
1305         case TYMED_HGLOBAL:   return wxT("TYMED_HGLOBAL");
1306         case TYMED_FILE:      return wxT("TYMED_FILE");
1307         case TYMED_ISTREAM:   return wxT("TYMED_ISTREAM");
1308         case TYMED_ISTORAGE:  return wxT("TYMED_ISTORAGE");
1309         case TYMED_GDI:       return wxT("TYMED_GDI");
1310         case TYMED_MFPICT:    return wxT("TYMED_MFPICT");
1311         case TYMED_ENHMF:     return wxT("TYMED_ENHMF");
1312         default:
1313             wxSprintf(s_szBuf, wxT("type of media format %ld (unknown)"), tymed);
1314             return s_szBuf;
1315     }
1316 }
1317
1318 #endif // Debug
1319
1320 #else // not using OLE at all
1321 // ----------------------------------------------------------------------------
1322 // wxDataObject
1323 // ----------------------------------------------------------------------------
1324
1325 wxDataObject::wxDataObject()
1326 {
1327 }
1328
1329 wxDataObject::~wxDataObject()
1330 {
1331 }
1332
1333 void wxDataObject::SetAutoDelete()
1334 {
1335 }
1336
1337 #ifdef __WXDEBUG__
1338 const wxChar *wxDataObject::GetFormatName(wxDataFormat format)
1339 {
1340     return NULL;
1341 }
1342 #endif
1343
1344 #endif
1345