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