src/msw/clipbrd.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        clipbrd.cpp
   3 // Purpose:     Clipboard functionality
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "clipbrd.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/setup.h"
  33 #endif
  34
  35 #if wxUSE_CLIPBOARD
  36
  37 #ifndef WX_PRECOMP
  38     #include "wx/object.h"
  39     #include "wx/event.h"
  40     #include "wx/app.h"
  41     #include "wx/frame.h"
  42     #include "wx/bitmap.h"
  43     #include "wx/utils.h"
  44     #include "wx/intl.h"
  45 #endif
  46
  47 #if wxUSE_METAFILE
  48     #include "wx/metafile.h"
  49 #endif
  50
  51 #include "wx/log.h"
  52 #include "wx/clipbrd.h"
  53
  54 #include <string.h>
  55 #include <windows.h>
  56
  57 #include "wx/msw/private.h"
  58 #include "wx/msw/dib.h"
  59
  60 // wxDataObject is tied to OLE/drag and drop implementation, therefore so are
  61 // the functions using wxDataObject in wxClipboard
  62 #define wxUSE_DATAOBJ wxUSE_DRAG_AND_DROP
  63
  64 #if wxUSE_DATAOBJ
  65     #include "wx/dataobj.h"
  66
  67     // use OLE clipboard
  68     #define wxUSE_OLE_CLIPBOARD 1
  69 #else // !wxUSE_DATAOBJ
  70     // use Win clipboard API
  71     #define wxUSE_OLE_CLIPBOARD 0
  72 #endif
  73
  74 #if wxUSE_OLE_CLIPBOARD
  75     #include <ole2.h>
  76 #endif // wxUSE_OLE_CLIPBOARD
  77
  78 #ifdef __WIN16__
  79     #define memcpy hmemcpy
  80 #endif
  81
  82 // ===========================================================================
  83 // implementation
  84 // ===========================================================================
  85
  86 // ---------------------------------------------------------------------------
  87 // old-style clipboard functions using Windows API
  88 // ---------------------------------------------------------------------------
  89
  90 static bool gs_wxClipboardIsOpen = FALSE;
  91
  92 bool wxOpenClipboard()
  93 {
  94     wxCHECK_MSG( !gs_wxClipboardIsOpen, TRUE, wxT("clipboard already opened.") );
  95
  96     wxWindow *win = wxTheApp->GetTopWindow();
  97     if ( win )
  98     {
  99         gs_wxClipboardIsOpen = ::OpenClipboard((HWND)win->GetHWND()) != 0;
 100
 101         if ( !gs_wxClipboardIsOpen )
 102             wxLogSysError(_("Failed to open the clipboard."));
 103
 104         return gs_wxClipboardIsOpen;
 105     }
 106     else
 107     {
 108         wxLogDebug(wxT("Can not open clipboard without a main window."));
 109
 110         return FALSE;
 111     }
 112 }
 113
 114 bool wxCloseClipboard()
 115 {
 116     wxCHECK_MSG( gs_wxClipboardIsOpen, FALSE, wxT("clipboard is not opened") );
 117
 118     gs_wxClipboardIsOpen = FALSE;
 119
 120     if ( ::CloseClipboard() == 0 )
 121     {
 122         wxLogSysError(_("Failed to close the clipboard."));
 123
 124         return FALSE;
 125     }
 126
 127     return TRUE;
 128 }
 129
 130 bool wxEmptyClipboard()
 131 {
 132     if ( ::EmptyClipboard() == 0 )
 133     {
 134         wxLogSysError(_("Failed to empty the clipboard."));
 135
 136         return FALSE;
 137     }
 138
 139     return TRUE;
 140 }
 141
 142 bool wxIsClipboardOpened()
 143 {
 144   return gs_wxClipboardIsOpen;
 145 }
 146
 147 bool wxIsClipboardFormatAvailable(wxDataFormat dataFormat)
 148 {
 149     // for bitmaps, DIBs will also do
 150     return (::IsClipboardFormatAvailable(dataFormat) != 0) ||
 151            (dataFormat.GetFormatId() == CF_BITMAP &&
 152             ::IsClipboardFormatAvailable(CF_DIB));
 153 }
 154
 155 bool wxSetClipboardData(wxDataFormat dataFormat,
 156                         const void *data,
 157                         int width, int height)
 158 {
 159     HANDLE handle = 0; // return value of SetClipboardData
 160
 161     switch (dataFormat)
 162     {
 163         case wxDF_BITMAP:
 164             {
 165                 wxBitmap *bitmap = (wxBitmap *)data;
 166
 167                 HDC hdcMem = CreateCompatibleDC((HDC) NULL);
 168                 HDC hdcSrc = CreateCompatibleDC((HDC) NULL);
 169                 HBITMAP old = (HBITMAP)
 170                     ::SelectObject(hdcSrc, (HBITMAP)bitmap->GetHBITMAP());
 171                 HBITMAP hBitmap = CreateCompatibleBitmap(hdcSrc,
 172                                                          bitmap->GetWidth(),
 173                                                          bitmap->GetHeight());
 174                 if (!hBitmap)
 175                 {
 176                     SelectObject(hdcSrc, old);
 177                     DeleteDC(hdcMem);
 178                     DeleteDC(hdcSrc);
 179                     return FALSE;
 180                 }
 181
 182                 HBITMAP old1 = (HBITMAP) SelectObject(hdcMem, hBitmap);
 183                 BitBlt(hdcMem, 0, 0, bitmap->GetWidth(), bitmap->GetHeight(),
 184                        hdcSrc, 0, 0, SRCCOPY);
 185
 186                 // Select new bitmap out of memory DC
 187                 SelectObject(hdcMem, old1);
 188
 189                 // Set the data
 190                 handle = ::SetClipboardData(CF_BITMAP, hBitmap);
 191
 192                 // Clean up
 193                 SelectObject(hdcSrc, old);
 194                 DeleteDC(hdcSrc);
 195                 DeleteDC(hdcMem);
 196                 break;
 197             }
 198
 199         case wxDF_DIB:
 200             {
 201 #if wxUSE_IMAGE_LOADING_IN_MSW
 202                 wxBitmap *bitmap = (wxBitmap *)data;
 203                 HBITMAP hBitmap = (HBITMAP)bitmap->GetHBITMAP();
 204                 // NULL palette means to use the system one
 205                 HANDLE hDIB = wxBitmapToDIB(hBitmap, (HPALETTE)NULL);
 206                 handle = SetClipboardData(CF_DIB, hDIB);
 207 #endif // wxUSE_IMAGE_LOADING_IN_MSW
 208                 break;
 209             }
 210
 211 #if wxUSE_METAFILE
 212         case wxDF_METAFILE:
 213             {
 214                 wxMetafile *wxMF = (wxMetafile *)data;
 215                 HANDLE data = GlobalAlloc(GHND, sizeof(METAFILEPICT) + 1);
 216                 METAFILEPICT *mf = (METAFILEPICT *)GlobalLock(data);
 217
 218                 mf->mm = wxMF->GetWindowsMappingMode();
 219                 mf->xExt = width;
 220                 mf->yExt = height;
 221                 mf->hMF = (HMETAFILE) wxMF->GetHMETAFILE();
 222                 GlobalUnlock(data);
 223                 wxMF->SetHMETAFILE((WXHANDLE) NULL);
 224
 225                 handle = SetClipboardData(CF_METAFILEPICT, data);
 226                 break;
 227             }
 228 #endif
 229         case CF_SYLK:
 230         case CF_DIF:
 231         case CF_TIFF:
 232         case CF_PALETTE:
 233         default:
 234             {
 235                 wxLogError(_("Unsupported clipboard format."));
 236                 return FALSE;
 237             }
 238
 239         case wxDF_OEMTEXT:
 240             dataFormat = wxDF_TEXT;
 241             // fall through
 242
 243         case wxDF_TEXT:
 244             {
 245                 char *s = (char *)data;
 246
 247                 width = strlen(s) + 1;
 248                 height = 1;
 249                 DWORD l = (width * height);
 250                 HANDLE hGlobalMemory = GlobalAlloc(GHND, l);
 251                 if ( hGlobalMemory )
 252                 {
 253                     LPSTR lpGlobalMemory = (LPSTR)GlobalLock(hGlobalMemory);
 254
 255                     memcpy(lpGlobalMemory, s, l);
 256
 257                     GlobalUnlock(hGlobalMemory);
 258                 }
 259
 260                 handle = SetClipboardData(dataFormat, hGlobalMemory);
 261                 break;
 262             }
 263     }
 264
 265     if ( handle == 0 )
 266     {
 267         wxLogSysError(_("Failed to set clipboard data."));
 268
 269         return FALSE;
 270     }
 271
 272     return TRUE;
 273 }
 274
 275 void *wxGetClipboardData(wxDataFormat dataFormat, long *len)
 276 {
 277     void *retval = NULL;
 278
 279     switch ( dataFormat )
 280     {
 281         case wxDF_BITMAP:
 282             {
 283                 BITMAP bm;
 284                 HBITMAP hBitmap = (HBITMAP) GetClipboardData(CF_BITMAP);
 285                 if (!hBitmap)
 286                     break;
 287
 288                 HDC hdcMem = CreateCompatibleDC((HDC) NULL);
 289                 HDC hdcSrc = CreateCompatibleDC((HDC) NULL);
 290
 291                 HBITMAP old = (HBITMAP) ::SelectObject(hdcSrc, hBitmap);
 292                 GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&bm);
 293
 294                 HBITMAP hNewBitmap = CreateBitmapIndirect(&bm);
 295
 296                 if (!hNewBitmap)
 297                 {
 298                     SelectObject(hdcSrc, old);
 299                     DeleteDC(hdcMem);
 300                     DeleteDC(hdcSrc);
 301                     break;
 302                 }
 303
 304                 HBITMAP old1 = (HBITMAP) SelectObject(hdcMem, hNewBitmap);
 305                 BitBlt(hdcMem, 0, 0, bm.bmWidth, bm.bmHeight,
 306                        hdcSrc, 0, 0, SRCCOPY);
 307
 308                 // Select new bitmap out of memory DC
 309                 SelectObject(hdcMem, old1);
 310
 311                 // Clean up
 312                 SelectObject(hdcSrc, old);
 313                 DeleteDC(hdcSrc);
 314                 DeleteDC(hdcMem);
 315
 316                 // Create and return a new wxBitmap
 317                 wxBitmap *wxBM = new wxBitmap;
 318                 wxBM->SetHBITMAP((WXHBITMAP) hNewBitmap);
 319                 wxBM->SetWidth(bm.bmWidth);
 320                 wxBM->SetHeight(bm.bmHeight);
 321                 wxBM->SetDepth(bm.bmPlanes);
 322                 wxBM->SetOk(TRUE);
 323                 retval = wxBM;
 324                 break;
 325             }
 326
 327         case wxDF_METAFILE:
 328         case CF_SYLK:
 329         case CF_DIF:
 330         case CF_TIFF:
 331         case CF_PALETTE:
 332         case wxDF_DIB:
 333             {
 334                 wxLogError(_("Unsupported clipboard format."));
 335                 return FALSE;
 336             }
 337
 338         case wxDF_OEMTEXT:
 339             dataFormat = wxDF_TEXT;
 340             // fall through
 341
 342         case wxDF_TEXT:
 343             {
 344                 HANDLE hGlobalMemory = ::GetClipboardData(dataFormat);
 345                 if (!hGlobalMemory)
 346                     break;
 347
 348                 DWORD hsize = ::GlobalSize(hGlobalMemory);
 349                 if (len)
 350                     *len = hsize;
 351
 352                 char *s = new char[hsize];
 353                 if (!s)
 354                     break;
 355
 356                 LPSTR lpGlobalMemory = (LPSTR)::GlobalLock(hGlobalMemory);
 357
 358                 memcpy(s, lpGlobalMemory, hsize);
 359
 360                 ::GlobalUnlock(hGlobalMemory);
 361
 362                 retval = s;
 363                 break;
 364             }
 365
 366         default:
 367             {
 368                 HANDLE hGlobalMemory = ::GetClipboardData(dataFormat);
 369                 if ( !hGlobalMemory )
 370                     break;
 371
 372                 DWORD size = ::GlobalSize(hGlobalMemory);
 373                 if ( len )
 374                     *len = size;
 375
 376                 void *buf = malloc(size);
 377                 if ( !buf )
 378                     break;
 379
 380                 LPSTR lpGlobalMemory = (LPSTR)::GlobalLock(hGlobalMemory);
 381
 382                 memcpy(buf, lpGlobalMemory, size);
 383
 384                 ::GlobalUnlock(hGlobalMemory);
 385
 386                 retval = buf;
 387                 break;
 388             }
 389     }
 390
 391     if ( !retval )
 392     {
 393         wxLogSysError(_("Failed to retrieve data from the clipboard."));
 394     }
 395
 396     return retval;
 397 }
 398
 399 wxDataFormat wxEnumClipboardFormats(wxDataFormat dataFormat)
 400 {
 401   return ::EnumClipboardFormats(dataFormat);
 402 }
 403
 404 int wxRegisterClipboardFormat(wxChar *formatName)
 405 {
 406   return ::RegisterClipboardFormat(formatName);
 407 }
 408
 409 bool wxGetClipboardFormatName(wxDataFormat dataFormat,
 410                               wxChar *formatName,
 411                               int maxCount)
 412 {
 413   return ::GetClipboardFormatName((int)dataFormat, formatName, maxCount) > 0;
 414 }
 415
 416 // ---------------------------------------------------------------------------
 417 // wxClipboard
 418 // ---------------------------------------------------------------------------
 419
 420 IMPLEMENT_DYNAMIC_CLASS(wxClipboard, wxObject)
 421
 422 wxClipboard::wxClipboard()
 423 {
 424     m_clearOnExit = FALSE;
 425 }
 426
 427 wxClipboard::~wxClipboard()
 428 {
 429     if ( m_clearOnExit )
 430     {
 431         Clear();
 432     }
 433 }
 434
 435 void wxClipboard::Clear()
 436 {
 437 #if wxUSE_OLE_CLIPBOARD
 438     if ( FAILED(OleSetClipboard(NULL)) )
 439     {
 440         wxLogLastError("OleSetClipboard(NULL)");
 441     }
 442 #endif
 443 }
 444
 445 bool wxClipboard::Flush()
 446 {
 447 #if wxUSE_OLE_CLIPBOARD
 448     if ( FAILED(OleFlushClipboard()) )
 449     {
 450         wxLogLastError("OleFlushClipboard");
 451
 452         return FALSE;
 453     }
 454     else
 455     {
 456         m_clearOnExit = FALSE;
 457
 458         return TRUE;
 459     }
 460 #else // !wxUSE_OLE_CLIPBOARD
 461     return FALSE;
 462 #endif // wxUSE_OLE_CLIPBOARD/!wxUSE_OLE_CLIPBOARD
 463 }
 464
 465 bool wxClipboard::Open()
 466 {
 467     // OLE opens clipboard for us
 468 #if wxUSE_OLE_CLIPBOARD
 469     return TRUE;
 470 #else
 471     return wxOpenClipboard();
 472 #endif
 473 }
 474
 475 bool wxClipboard::IsOpened() const
 476 {
 477 #if wxUSE_OLE_CLIPBOARD
 478     return TRUE;
 479 #else
 480     return wxIsClipboardOpened();
 481 #endif
 482 }
 483
 484 bool wxClipboard::SetData( wxDataObject *data )
 485 {
 486     (void)wxEmptyClipboard();
 487
 488     if ( data )
 489         return AddData(data);
 490     else
 491         return TRUE;
 492 }
 493
 494 bool wxClipboard::AddData( wxDataObject *data )
 495 {
 496     wxCHECK_MSG( data, FALSE, wxT("data is invalid") );
 497
 498 #if wxUSE_OLE_CLIPBOARD
 499     HRESULT hr = OleSetClipboard(data->GetInterface());
 500     if ( FAILED(hr) )
 501     {
 502         wxLogSysError(hr, _("Failed to put data on the clipboard"));
 503
 504         // don't free anything in this case
 505
 506         return FALSE;
 507     }
 508
 509     // we have a problem here because we should delete wxDataObject, but we
 510     // can't do it because IDataObject which we just gave to the clipboard
 511     // would try to use it when it will need the data. IDataObject is ref
 512     // counted and so doesn't suffer from such problem, so we release it now
 513     // and tell it to delete wxDataObject when it is deleted itself.
 514     data->SetAutoDelete();
 515
 516     // we have to call either OleSetClipboard(NULL) or OleFlushClipboard() when
 517     // using OLE clipboard when the app terminates - by default, we call
 518     // OleSetClipboard(NULL) which won't waste RAM, but the app can call
 519     // wxClipboard::Flush() to chaneg this
 520     m_clearOnExit = TRUE;
 521
 522     return TRUE;
 523 #elif wxUSE_DATAOBJ
 524     wxCHECK_MSG( wxIsClipboardOpened(), FALSE, wxT("clipboard not open") );
 525
 526     wxDataFormat format = data->GetFormat();
 527
 528     switch ( format )
 529     {
 530         case wxDF_TEXT:
 531         case wxDF_OEMTEXT:
 532         {
 533             wxTextDataObject* textDataObject = (wxTextDataObject*) data;
 534             wxString str(textDataObject->GetText());
 535             return wxSetClipboardData(format, str.c_str());
 536         }
 537
 538         case wxDF_BITMAP:
 539         case wxDF_DIB:
 540         {
 541             wxBitmapDataObject* bitmapDataObject = (wxBitmapDataObject*) data;
 542             wxBitmap bitmap(bitmapDataObject->GetBitmap());
 543             return wxSetClipboardData(data->GetFormat(), &bitmap);
 544         }
 545
 546 #if wxUSE_METAFILE
 547         case wxDF_METAFILE:
 548         {
 549             wxMetafileDataObject* metaFileDataObject =
 550                 (wxMetafileDataObject*) data;
 551             wxMetafile metaFile = metaFileDataObject->GetMetafile();
 552             return wxSetClipboardData(wxDF_METAFILE, &metaFile,
 553                                       metaFileDataObject->GetWidth(),
 554                                       metaFileDataObject->GetHeight());
 555         }
 556 #endif // wxUSE_METAFILE
 557
 558         default:
 559             return wxSetClipboardData(data);
 560     }
 561 #else // !wxUSE_DATAOBJ
 562     return FALSE;
 563 #endif // wxUSE_DATAOBJ/!wxUSE_DATAOBJ
 564 }
 565
 566 void wxClipboard::Close()
 567 {
 568     // OLE closes clipboard for us
 569 #if !wxUSE_OLE_CLIPBOARD
 570     wxCloseClipboard();
 571 #endif
 572 }
 573
 574 bool wxClipboard::IsSupported( wxDataFormat format )
 575 {
 576     return wxIsClipboardFormatAvailable(format);
 577 }
 578
 579 bool wxClipboard::GetData( wxDataObject& data )
 580 {
 581 #if wxUSE_OLE_CLIPBOARD
 582     IDataObject *pDataObject = NULL;
 583     HRESULT hr = OleGetClipboard(&pDataObject);
 584     if ( FAILED(hr) || !pDataObject )
 585     {
 586         wxLogSysError(hr, _("Failed to get data from the clipboard"));
 587
 588         return FALSE;
 589     }
 590
 591     // build the list of supported formats
 592     size_t nFormats = data.GetFormatCount(wxDataObject::Set);
 593     wxDataFormat format, *formats;
 594     if ( nFormats == 1 )
 595     {
 596         // the most common case
 597         formats = &format;
 598     }
 599     else
 600     {
 601         // bad luck, need to alloc mem
 602         formats = new wxDataFormat[nFormats];
 603     }
 604
 605     data.GetAllFormats(formats, wxDataObject::Set);
 606
 607     // get the format enumerator
 608     bool result = FALSE;
 609     wxArrayInt supportedFormats;
 610     IEnumFORMATETC *pEnumFormatEtc = NULL;
 611     hr = pDataObject->EnumFormatEtc(DATADIR_GET, &pEnumFormatEtc);
 612     if ( FAILED(hr) || !pEnumFormatEtc )
 613     {
 614         wxLogSysError(hr,
 615                       _("Failed to retrieve the supported clipboard formats"));
 616     }
 617     else
 618     {
 619         // ask for the supported formats and see if there are any we support
 620         FORMATETC formatEtc;
 621         for ( ;; )
 622         {
 623             ULONG nCount;
 624             hr = pEnumFormatEtc->Next(1, &formatEtc, &nCount);
 625
 626             // don't use FAILED() because S_FALSE would pass it
 627             if ( hr != S_OK )
 628             {
 629                 // no more formats
 630                 break;
 631             }
 632
 633             CLIPFORMAT cf = formatEtc.cfFormat;
 634
 635 #ifdef __WXDEBUG__
 636             wxLogTrace(wxTRACE_OleCalls,
 637                        wxT("Object on the clipboard supports format %s."),
 638                        wxDataObject::GetFormatName(cf));
 639 #endif // Debug
 640
 641             // is supported?
 642             for ( size_t n = 0; n < nFormats; n++ )
 643             {
 644                 if ( formats[n].GetFormatId() == cf )
 645                 {
 646                     if ( supportedFormats.Index(cf) == wxNOT_FOUND )
 647                     {
 648                         supportedFormats.Add(cf);
 649                     }
 650                 }
 651             }
 652         }
 653
 654         pEnumFormatEtc->Release();
 655     }
 656
 657     if ( formats != &format )
 658     {
 659         delete [] formats;
 660     }
 661     //else: we didn't allocate any memory
 662
 663     if ( !supportedFormats.IsEmpty() )
 664     {
 665         FORMATETC formatEtc;
 666         formatEtc.ptd      = NULL;
 667         formatEtc.dwAspect = DVASPECT_CONTENT;
 668         formatEtc.lindex   = -1;
 669         formatEtc.tymed    = TYMED_HGLOBAL;
 670
 671         size_t nSupportedFormats = supportedFormats.GetCount();
 672         for ( size_t n = 0; !result && (n < nSupportedFormats); n++ )
 673         {
 674             STGMEDIUM medium;
 675             formatEtc.cfFormat = supportedFormats[n];
 676
 677             // try to get data
 678             hr = pDataObject->GetData(&formatEtc, &medium);
 679             if ( FAILED(hr) )
 680             {
 681                 // try other tymed for GDI objects
 682                 if ( formatEtc.cfFormat == CF_BITMAP )
 683                 {
 684                     formatEtc.tymed = TYMED_HGLOBAL;
 685                     hr = pDataObject->GetData(&formatEtc, &medium);
 686                 }
 687             }
 688
 689             if ( SUCCEEDED(hr) )
 690             {
 691                 // pass the data to the data object
 692                 hr = data.GetInterface()->SetData(&formatEtc, &medium, TRUE);
 693                 if ( FAILED(hr) )
 694                 {
 695                     wxLogDebug(wxT("Failed to set data in wxIDataObject"));
 696
 697                     // IDataObject only takes the ownership of data if it
 698                     // successfully got it - which is not the case here
 699                     ReleaseStgMedium(&medium);
 700                 }
 701                 else
 702                 {
 703                     result = TRUE;
 704                 }
 705             }
 706             //else: unsupported tymed?
 707         }
 708     }
 709     //else: unsupported format
 710
 711     // clean up and return
 712     pDataObject->Release();
 713
 714     return result;
 715 #elif wxUSE_DATAOBJ
 716     wxCHECK_MSG( wxIsClipboardOpened(), FALSE, wxT("clipboard not open") );
 717
 718     wxDataFormat format = data.GetFormat();
 719     switch ( format )
 720     {
 721         case wxDF_TEXT:
 722         case wxDF_OEMTEXT:
 723         {
 724             wxTextDataObject& textDataObject = (wxTextDataObject &)data;
 725             char* s = (char*)wxGetClipboardData(format);
 726             if ( !s )
 727                 return FALSE;
 728
 729             textDataObject.SetText(s);
 730             delete [] s;
 731
 732             return TRUE;
 733         }
 734
 735         case wxDF_BITMAP:
 736         case wxDF_DIB:
 737         {
 738             wxBitmapDataObject& bitmapDataObject = (wxBitmapDataObject &)data;
 739             wxBitmap* bitmap = (wxBitmap *)wxGetClipboardData(data->GetFormat());
 740             if ( !bitmap )
 741                 return FALSE;
 742
 743             bitmapDataObject.SetBitmap(*bitmap);
 744             delete bitmap;
 745
 746             return TRUE;
 747         }
 748 #if wxUSE_METAFILE
 749         case wxDF_METAFILE:
 750         {
 751             wxMetafileDataObject& metaFileDataObject = (wxMetafileDataObject &)data;
 752             wxMetafile* metaFile = (wxMetafile *)wxGetClipboardData(wxDF_METAFILE);
 753             if ( !metaFile )
 754                 return FALSE;
 755
 756             metaFileDataObject.SetMetafile(*metaFile);
 757             delete metaFile;
 758
 759             return TRUE;
 760         }
 761 #endif // wxUSE_METAFILE
 762     }
 763 #else // !wxUSE_DATAOBJ
 764     wxFAIL_MSG( wxT("no clipboard implementation") );
 765 #endif // wxUSE_OLE_CLIPBOARD/wxUSE_DATAOBJ
 766
 767     return FALSE;
 768 }
 769
 770 #else
 771     #error "Please turn wxUSE_CLIPBOARD on to compile this file."
 772 #endif // wxUSE_CLIPBOARD
 773