src/msw/mimetype.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/mimetype.cpp
   3 // Purpose:     classes and functions to manage MIME types
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     23.09.98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows licence (part of wxExtra library)
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef    __GNUG__
  13 #pragma implementation "mimetype.h"
  14 #endif
  15
  16 // for compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20   #pragma hdrstop
  21 #endif
  22
  23 #if wxUSE_MIMETYPE
  24
  25 // Doesn't compile in WIN16 mode
  26 #ifndef __WIN16__
  27
  28 #ifndef WX_PRECOMP
  29     #include "wx/string.h"
  30     #if wxUSE_GUI
  31         #include "wx/icon.h"
  32         #include "wx/msgdlg.h"
  33     #endif
  34 #endif //WX_PRECOMP
  35
  36 #include "wx/log.h"
  37 #include "wx/file.h"
  38 #include "wx/intl.h"
  39 #include "wx/dynarray.h"
  40 #include "wx/confbase.h"
  41
  42 #ifdef __WXMSW__
  43     #include "wx/msw/registry.h"
  44     #include "wx/msw/private.h"
  45 #endif // OS
  46
  47 #include "wx/msw/mimetype.h"
  48
  49 // other standard headers
  50 #include <ctype.h>
  51
  52 // in case we're compiling in non-GUI mode
  53 class WXDLLEXPORT wxIcon;
  54
  55 // These classes use Windows registry to retrieve the required information.
  56 //
  57 // Keys used (not all of them are documented, so it might actually stop working
  58 // in future versions of Windows...):
  59 //  1. "HKCR\MIME\Database\Content Type" contains subkeys for all known MIME
  60 //     types, each key has a string value "Extension" which gives (dot preceded)
  61 //     extension for the files of this MIME type.
  62 //
  63 //  2. "HKCR\.ext" contains
  64 //   a) unnamed value containing the "filetype"
  65 //   b) value "Content Type" containing the MIME type
  66 //
  67 // 3. "HKCR\filetype" contains
  68 //   a) unnamed value containing the description
  69 //   b) subkey "DefaultIcon" with single unnamed value giving the icon index in
  70 //      an icon file
  71 //   c) shell\open\command and shell\open\print subkeys containing the commands
  72 //      to open/print the file (the positional parameters are introduced by %1,
  73 //      %2, ... in these strings, we change them to %s ourselves)
  74
  75 // although I don't know of any official documentation which mentions this
  76 // location, uses it, so it isn't likely to change
  77 static const wxChar *MIME_DATABASE_KEY = wxT("MIME\\Database\\Content Type\\");
  78
  79 void wxFileTypeImpl::Init(const wxString& strFileType, const wxString& ext)
  80 {
  81     // VZ: does it? (FIXME)
  82     wxCHECK_RET( !ext.IsEmpty(), _T("needs an extension") );
  83
  84     if ( ext[0u] != wxT('.') ) {
  85         m_ext = wxT('.');
  86     }
  87     m_ext << ext;
  88
  89     m_strFileType = strFileType;
  90     if ( !strFileType ) {
  91         m_strFileType = m_ext.AfterFirst('.') + _T("_auto_file");
  92     }
  93 }
  94
  95 wxString wxFileTypeImpl::GetVerbPath(const wxString& verb) const
  96 {
  97     wxString path;
  98     path << m_strFileType << _T("\\shell\\") << verb << _T("\\command");
  99     return path;
 100 }
 101
 102 size_t wxFileTypeImpl::GetAllCommands(wxArrayString *verbs,
 103                                       wxArrayString *commands,
 104                                       const wxFileType::MessageParameters& params) const
 105 {
 106     wxCHECK_MSG( !m_ext.IsEmpty(), 0, _T("GetAllCommands() needs an extension") );
 107
 108     if ( m_strFileType.IsEmpty() )
 109     {
 110         // get it from the registry
 111         wxFileTypeImpl *self = wxConstCast(this, wxFileTypeImpl);
 112         wxRegKey rkey(wxRegKey::HKCR, m_ext);
 113         if ( !rkey.Exists() || !rkey.QueryValue(_T(""), self->m_strFileType) )
 114         {
 115             wxLogDebug(_T("Can't get the filetype for extension '%s'."),
 116                        m_ext.c_str());
 117
 118             return 0;
 119         }
 120     }
 121
 122     // enum all subkeys of HKCR\filetype\shell
 123     size_t count = 0;
 124     wxRegKey rkey(wxRegKey::HKCR, m_strFileType  + _T("\\shell"));
 125     long dummy;
 126     wxString verb;
 127     bool ok = rkey.GetFirstKey(verb, dummy);
 128     while ( ok )
 129     {
 130         wxString command = wxFileType::ExpandCommand(GetCommand(verb), params);
 131
 132         // we want the open bverb to eb always the first
 133
 134         if ( verb.CmpNoCase(_T("open")) == 0 )
 135         {
 136             if ( verbs )
 137                 verbs->Insert(verb, 0);
 138             if ( commands )
 139                 commands->Insert(command, 0);
 140         }
 141         else // anything else than "open"
 142         {
 143             if ( verbs )
 144                 verbs->Add(verb);
 145             if ( commands )
 146                 commands->Add(command);
 147         }
 148
 149         count++;
 150
 151         ok = rkey.GetNextKey(verb, dummy);
 152     }
 153
 154     return count;
 155 }
 156
 157 // ----------------------------------------------------------------------------
 158 // modify the registry database
 159 // ----------------------------------------------------------------------------
 160
 161 bool wxFileTypeImpl::EnsureExtKeyExists()
 162 {
 163     wxRegKey rkey(wxRegKey::HKCR, m_ext);
 164     if ( !rkey.Exists() )
 165     {
 166         if ( !rkey.Create() || !rkey.SetValue(_T(""), m_strFileType) )
 167         {
 168             wxLogError(_("Failed to create registry entry for '%s' files."),
 169                        m_ext.c_str());
 170             return FALSE;
 171         }
 172     }
 173
 174     return TRUE;
 175 }
 176
 177 // ----------------------------------------------------------------------------
 178 // get the command to use
 179 // ----------------------------------------------------------------------------
 180
 181 wxString wxFileTypeImpl::GetCommand(const wxChar *verb) const
 182 {
 183     // suppress possible error messages
 184     wxLogNull nolog;
 185     wxString strKey;
 186
 187     if ( wxRegKey(wxRegKey::HKCR, m_ext + _T("\\shell")).Exists() )
 188         strKey = m_ext;
 189     if ( wxRegKey(wxRegKey::HKCR, m_strFileType + _T("\\shell")).Exists() )
 190         strKey = m_strFileType;
 191
 192     if ( !strKey )
 193     {
 194         // no info
 195         return wxEmptyString;
 196     }
 197
 198     strKey << wxT("\\shell\\") << verb;
 199     wxRegKey key(wxRegKey::HKCR, strKey + _T("\\command"));
 200     wxString command;
 201     if ( key.Open() ) {
 202         // it's the default value of the key
 203         if ( key.QueryValue(wxT(""), command) ) {
 204             // transform it from '%1' to '%s' style format string (now also
 205             // test for %L - apparently MS started using it as well for the
 206             // same purpose)
 207
 208             // NB: we don't make any attempt to verify that the string is valid,
 209             //     i.e. doesn't contain %2, or second %1 or .... But we do make
 210             //     sure that we return a string with _exactly_ one '%s'!
 211             bool foundFilename = FALSE;
 212             size_t len = command.Len();
 213             for ( size_t n = 0; (n < len) && !foundFilename; n++ ) {
 214                 if ( command[n] == wxT('%') &&
 215                      (n + 1 < len) &&
 216                      (command[n + 1] == wxT('1') ||
 217                       command[n + 1] == wxT('L')) ) {
 218                     // replace it with '%s'
 219                     command[n + 1] = wxT('s');
 220
 221                     foundFilename = TRUE;
 222                 }
 223             }
 224
 225 #if wxUSE_IPC
 226             // look whether we must issue some DDE requests to the application
 227             // (and not just launch it)
 228             strKey += _T("\\DDEExec");
 229             wxRegKey keyDDE(wxRegKey::HKCR, strKey);
 230             if ( keyDDE.Open() ) {
 231                 wxString ddeCommand, ddeServer, ddeTopic;
 232                 keyDDE.QueryValue(_T(""), ddeCommand);
 233                 ddeCommand.Replace(_T("%1"), _T("%s"));
 234
 235                 wxRegKey(wxRegKey::HKCR, strKey + _T("\\Application")).
 236                     QueryValue(_T(""), ddeServer);
 237                 wxRegKey(wxRegKey::HKCR, strKey + _T("\\Topic")).
 238                     QueryValue(_T(""), ddeTopic);
 239
 240                 if (ddeTopic.IsEmpty())
 241                     ddeTopic = wxT("System");
 242
 243                 // HACK: we use a special feature of wxExecute which exists
 244                 //       just because we need it here: it will establish DDE
 245                 //       conversation with the program it just launched
 246                 command.Prepend(_T("WX_DDE#"));
 247                 command << _T('#') << ddeServer
 248                         << _T('#') << ddeTopic
 249                         << _T('#') << ddeCommand;
 250             }
 251             else
 252 #endif // wxUSE_IPC
 253                 if ( !foundFilename ) {
 254                 // we didn't find any '%1' - the application doesn't know which
 255                 // file to open (note that we only do it if there is no DDEExec
 256                 // subkey)
 257                 //
 258                 // HACK: append the filename at the end, hope that it will do
 259                 command << wxT(" %s");
 260             }
 261         }
 262     }
 263     //else: no such file type or no value, will return empty string
 264
 265     return command;
 266 }
 267
 268 bool
 269 wxFileTypeImpl::GetOpenCommand(wxString *openCmd,
 270                                const wxFileType::MessageParameters& params)
 271                                const
 272 {
 273     wxString cmd = GetCommand(wxT("open"));
 274
 275     *openCmd = wxFileType::ExpandCommand(cmd, params);
 276
 277     return !openCmd->IsEmpty();
 278 }
 279
 280 bool
 281 wxFileTypeImpl::GetPrintCommand(wxString *printCmd,
 282                                 const wxFileType::MessageParameters& params)
 283                                 const
 284 {
 285     wxString cmd = GetCommand(wxT("print"));
 286
 287     *printCmd = wxFileType::ExpandCommand(cmd, params);
 288
 289     return !printCmd->IsEmpty();
 290 }
 291
 292 // ----------------------------------------------------------------------------
 293 // getting other stuff
 294 // ----------------------------------------------------------------------------
 295
 296 // TODO this function is half implemented
 297 bool wxFileTypeImpl::GetExtensions(wxArrayString& extensions)
 298 {
 299     if ( m_ext.IsEmpty() ) {
 300         // the only way to get the list of extensions from the file type is to
 301         // scan through all extensions in the registry - too slow...
 302         return FALSE;
 303     }
 304     else {
 305         extensions.Empty();
 306         extensions.Add(m_ext);
 307
 308         // it's a lie too, we don't return _all_ extensions...
 309         return TRUE;
 310     }
 311 }
 312
 313 bool wxFileTypeImpl::GetMimeType(wxString *mimeType) const
 314 {
 315     // suppress possible error messages
 316     wxLogNull nolog;
 317     wxRegKey key(wxRegKey::HKCR, m_ext);
 318
 319     return key.Open() && key.QueryValue(wxT("Content Type"), *mimeType);
 320 }
 321
 322 bool wxFileTypeImpl::GetMimeTypes(wxArrayString& mimeTypes) const
 323 {
 324     wxString s;
 325
 326     if ( !GetMimeType(&s) )
 327     {
 328         return FALSE;
 329     }
 330
 331     mimeTypes.Clear();
 332     mimeTypes.Add(s);
 333     return TRUE;
 334 }
 335
 336
 337 bool wxFileTypeImpl::GetIcon(wxIcon *icon,
 338                              wxString *iconFile,
 339                              int *iconIndex,
 340                              int iconSize) const
 341 {
 342 #if wxUSE_GUI
 343     wxString strIconKey;
 344     strIconKey << m_strFileType << wxT("\\DefaultIcon");
 345
 346     // suppress possible error messages
 347     wxLogNull nolog;
 348     wxRegKey key(wxRegKey::HKCR, strIconKey);
 349
 350     if ( key.Open() ) {
 351         wxString strIcon;
 352         // it's the default value of the key
 353         if ( key.QueryValue(wxT(""), strIcon) ) {
 354             // the format is the following: <full path to file>, <icon index>
 355             // NB: icon index may be negative as well as positive and the full
 356             //     path may contain the environment variables inside '%'
 357             wxString strFullPath = strIcon.BeforeLast(wxT(',')),
 358             strIndex = strIcon.AfterLast(wxT(','));
 359
 360             // index may be omitted, in which case BeforeLast(',') is empty and
 361             // AfterLast(',') is the whole string
 362             if ( strFullPath.IsEmpty() ) {
 363                 strFullPath = strIndex;
 364                 strIndex = wxT("0");
 365             }
 366
 367             wxString strExpPath = wxExpandEnvVars(strFullPath);
 368             // here we need C based counting!
 369             int nIndex = wxAtoi(strIndex);
 370
 371             HICON hIcon, hIconLarge, hIconSmall;
 372             ExtractIconEx(strExpPath, nIndex, &hIconLarge, &hIconSmall, 1);
 373
 374             hIcon = (iconSize == wxICON_LARGE) ? hIconLarge : hIconSmall;
 375
 376
 377             switch ( (int)hIcon ) {
 378                 case 0: // means no icons were found
 379                 case 1: // means no such file or it wasn't a DLL/EXE/OCX/ICO/...
 380                     wxLogDebug(wxT("incorrect registry entry '%s': no such icon."),
 381                                key.GetName().c_str());
 382                     break;
 383
 384                 default:
 385                     icon->SetHICON((WXHICON)hIcon);
 386                     wxSize size = wxGetHiconSize(hIcon);
 387                     icon->SetSize(size);
 388                     if ( iconIndex )
 389                         *iconIndex = nIndex;
 390                     if ( iconFile )
 391                         *iconFile = strFullPath;
 392                     return TRUE;
 393             }
 394         }
 395     }
 396
 397     // no such file type or no value or incorrect icon entry
 398 #endif // wxUSE_GUI
 399
 400     return FALSE;
 401 }
 402
 403 bool wxFileTypeImpl::GetDescription(wxString *desc) const
 404 {
 405     // suppress possible error messages
 406     wxLogNull nolog;
 407     wxRegKey key(wxRegKey::HKCR, m_strFileType);
 408
 409     if ( key.Open() ) {
 410         // it's the default value of the key
 411         if ( key.QueryValue(wxT(""), *desc) ) {
 412             return TRUE;
 413         }
 414     }
 415
 416     return FALSE;
 417 }
 418
 419 // helper function
 420 wxFileType *
 421 wxMimeTypesManagerImpl::CreateFileType(const wxString& filetype, const wxString& ext)
 422 {
 423     wxFileType *fileType = new wxFileType;
 424     fileType->m_impl->Init(filetype, ext);
 425     return fileType;
 426 }
 427
 428 // extension -> file type
 429 wxFileType *
 430 wxMimeTypesManagerImpl::GetFileTypeFromExtension(const wxString& ext)
 431 {
 432     // add the leading point if necessary
 433     wxString str;
 434     if ( ext[0u] != wxT('.') ) {
 435         str = wxT('.');
 436     }
 437     str << ext;
 438
 439     // suppress possible error messages
 440     wxLogNull nolog;
 441
 442     bool knownExtension = FALSE;
 443
 444     wxString strFileType;
 445     wxRegKey key(wxRegKey::HKCR, str);
 446     if ( key.Open() ) {
 447         // it's the default value of the key
 448         if ( key.QueryValue(wxT(""), strFileType) ) {
 449             // create the new wxFileType object
 450             return CreateFileType(strFileType, ext);
 451         }
 452         else {
 453             // this extension doesn't have a filetype, but it's known to the
 454             // system and may be has some other useful keys (open command or
 455             // content-type), so still return a file type object for it
 456             knownExtension = TRUE;
 457         }
 458     }
 459
 460     if ( !knownExtension )
 461     {
 462         // unknown extension
 463         return NULL;
 464     }
 465
 466     return CreateFileType(wxEmptyString, ext);
 467 }
 468
 469 /*
 470 wxFileType *
 471 wxMimeTypesManagerImpl::GetOrAllocateFileTypeFromExtension(const wxString& ext)
 472 {
 473     wxFileType *fileType = GetFileTypeFromExtension(ext);
 474     if ( !fileType )
 475     {
 476         fileType = CreateFileType(wxEmptyString, ext);
 477     }
 478
 479     return fileType;
 480 }
 481 */
 482
 483 // MIME type -> extension -> file type
 484 wxFileType *
 485 wxMimeTypesManagerImpl::GetFileTypeFromMimeType(const wxString& mimeType)
 486 {
 487     wxString strKey = MIME_DATABASE_KEY;
 488     strKey << mimeType;
 489
 490     // suppress possible error messages
 491     wxLogNull nolog;
 492
 493     wxString ext;
 494     wxRegKey key(wxRegKey::HKCR, strKey);
 495     if ( key.Open() ) {
 496         if ( key.QueryValue(wxT("Extension"), ext) ) {
 497             return GetFileTypeFromExtension(ext);
 498         }
 499     }
 500
 501     // unknown MIME type
 502     return NULL;
 503 }
 504
 505 size_t wxMimeTypesManagerImpl::EnumAllFileTypes(wxArrayString& mimetypes)
 506 {
 507     // enumerate all keys under MIME_DATABASE_KEY
 508     wxRegKey key(wxRegKey::HKCR, MIME_DATABASE_KEY);
 509
 510     wxString type;
 511     long cookie;
 512     bool cont = key.GetFirstKey(type, cookie);
 513     while ( cont )
 514     {
 515         mimetypes.Add(type);
 516
 517         cont = key.GetNextKey(type, cookie);
 518     }
 519
 520     return mimetypes.GetCount();
 521 }
 522
 523 // ----------------------------------------------------------------------------
 524 // create a new association
 525 // ----------------------------------------------------------------------------
 526
 527 wxFileType *wxMimeTypesManagerImpl::Associate(const wxFileTypeInfo& ftInfo)
 528 {
 529     wxCHECK_MSG( !ftInfo.GetExtensions().IsEmpty(), NULL,
 530                  _T("Associate() needs extension") );
 531
 532     bool ok = FALSE ;
 533     int iExtCount = 0 ;
 534     wxString filetype;
 535     wxString extWithDot;
 536
 537     wxString ext = ftInfo.GetExtensions()[iExtCount];
 538
 539     wxCHECK_MSG( !ext.empty(), NULL,
 540                  _T("Associate() needs non empty extension") );
 541
 542     if ( ext[0u] != _T('.') )
 543         extWithDot = _T('.');
 544     extWithDot += ext;
 545
 546     // start by setting the HKCR\\.ext entries
 547     // default is filetype; content type is mimetype
 548     const wxString& filetypeOrig = ftInfo.GetShortDesc();
 549
 550     wxRegKey key(wxRegKey::HKCR, extWithDot);
 551     if ( !key.Exists() )
 552     {
 553         // create the mapping from the extension to the filetype
 554         ok = key.Create();
 555         if ( ok )
 556         {
 557
 558             if ( filetypeOrig.empty() )
 559             {
 560                 // make it up from the extension
 561                 filetype << extWithDot.c_str() + 1 << _T("_file");
 562             }
 563             else
 564             {
 565                 // just use the provided one
 566                 filetype = filetypeOrig;
 567             }
 568
 569             ok = key.SetValue(_T(""), filetype);
 570         }
 571         }
 572         else
 573         {
 574             // key already exists, maybe we want to change it ??
 575             if (!filetypeOrig.empty())
 576                 {
 577                     filetype = filetypeOrig;
 578                     ok = key.SetValue(_T(""), filetype);
 579                 }
 580             else
 581                 {
 582                     ok = key.QueryValue(_T(""), filetype);
 583                 }
 584         }
 585         // now set a mimetypeif we have it, but ignore it if none
 586         const wxString& mimetype = ftInfo.GetMimeType();
 587         if ( !mimetype.empty() )
 588         {
 589             // set the MIME type
 590             ok = key.SetValue(_T("Content Type"), mimetype);
 591
 592             if ( ok )
 593             {
 594                 // create the MIME key
 595                 wxString strKey = MIME_DATABASE_KEY;
 596                 strKey << mimetype;
 597                 wxRegKey keyMIME(wxRegKey::HKCR, strKey);
 598                 ok = keyMIME.Create();
 599
 600                 if ( ok )
 601                 {
 602                     // and provide a back link to the extension
 603                     ok = keyMIME.SetValue(_T("Extension"), extWithDot);
 604                 }
 605             }
 606         }
 607
 608
 609     // now make other extensions have the same filetype
 610
 611     for (iExtCount=1; iExtCount < ftInfo.GetExtensionsCount(); iExtCount++ )
 612         {
 613             ext = ftInfo.GetExtensions()[iExtCount];
 614             if ( ext[0u] != _T('.') )
 615                extWithDot = _T('.');
 616             extWithDot += ext;
 617
 618             wxRegKey key(wxRegKey::HKCR, extWithDot);
 619             if ( !key.Exists() ) ok = key.Create();
 620             ok = key.SetValue(_T(""), filetype);
 621
 622         // now set any mimetypes we may have, but ignore it if none
 623         const wxString& mimetype = ftInfo.GetMimeType();
 624         if ( !mimetype.empty() )
 625         {
 626             // set the MIME type
 627             ok = key.SetValue(_T("Content Type"), mimetype);
 628
 629         if ( ok )
 630         {
 631                 // create the MIME key
 632                 wxString strKey = MIME_DATABASE_KEY;
 633                 strKey << mimetype;
 634                 wxRegKey keyMIME(wxRegKey::HKCR, strKey);
 635                 ok = keyMIME.Create();
 636
 637         if ( ok )
 638         {
 639                     // and provide a back link to the extension
 640                     ok = keyMIME.SetValue(_T("Extension"), extWithDot);
 641         }
 642         }
 643     }
 644
 645
 646     } // end of for loop; all extensions now point to HKCR\.ext\Default
 647
 648     // create the filetype key itself (it will be empty for now, but
 649     // SetCommand(), SetDefaultIcon() &c will use it later)
 650     wxRegKey keyFT(wxRegKey::HKCR, filetype);
 651     ok = keyFT.Create();
 652
 653     wxFileType *ft = NULL;
 654     ft = CreateFileType(filetype, extWithDot);
 655
 656     if (ft)
 657     {
 658             if (! ftInfo.GetOpenCommand ().IsEmpty() ) ft->SetCommand (ftInfo.GetOpenCommand (), wxT("open"  ) );
 659             if (! ftInfo.GetPrintCommand().IsEmpty() ) ft->SetCommand (ftInfo.GetPrintCommand(), wxT("print" ) );
 660             // chris: I don't like the ->m_impl-> here FIX this ??
 661             if (! ftInfo.GetDescription ().IsEmpty() ) ft->m_impl->SetDescription (ftInfo.GetDescription ()) ;
 662             if (! ftInfo.GetIconFile().IsEmpty() ) ft->SetDefaultIcon (ftInfo.GetIconFile(), ftInfo.GetIconIndex() );
 663
 664         }
 665     return ft;
 666 }
 667
 668 bool wxFileTypeImpl::SetCommand(const wxString& cmd,
 669                                 const wxString& verb,
 670                                 bool WXUNUSED(overwriteprompt))
 671 {
 672     wxCHECK_MSG( !m_ext.IsEmpty() && !verb.IsEmpty(), FALSE,
 673                  _T("SetCommand() needs an extension and a verb") );
 674
 675     if ( !EnsureExtKeyExists() )
 676         return FALSE;
 677
 678     wxRegKey rkey(wxRegKey::HKCR, GetVerbPath(verb));
 679 #if 0
 680     if ( rkey.Exists() && overwriteprompt )
 681     {
 682 #if wxUSE_GUI
 683         wxString old;
 684         rkey.QueryValue(wxT(""), old);
 685         if ( wxMessageBox
 686              (
 687                 wxString::Format(
 688                     _("Do you want to overwrite the command used to %s "
 689                       "files with extension \"%s\" ?\nCurrent value is \n%s, "
 690                       "\nNew value is \n%s %1"), // bug here FIX need %1 ??
 691                     verb.c_str(),
 692                     m_ext.c_str(),
 693                     old.c_str(),
 694                     cmd.c_str()),
 695                 _("Confirm registry update"),
 696                 wxYES_NO | wxICON_QUESTION
 697              ) != wxYES )
 698 #endif // wxUSE_GUI
 699         {
 700             // cancelled by user
 701             return FALSE;
 702         }
 703     }
 704 #endif
 705     // TODO:
 706     // 1. translate '%s' to '%1' instead of always adding it
 707     // 2. create DDEExec value if needed (undo GetCommand)
 708     return rkey.Create() && rkey.SetValue(_T(""), cmd + _T(" \"%1\"") );
 709 }
 710
 711 /* // no longer used
 712 bool wxFileTypeImpl::SetMimeType(const wxString& mimeTypeOrig)
 713 {
 714     wxCHECK_MSG( !m_ext.IsEmpty(), FALSE, _T("SetMimeType() needs extension") );
 715
 716     if ( !EnsureExtKeyExists() )
 717         return FALSE;
 718
 719     // VZ: is this really useful? (FIXME)
 720     wxString mimeType;
 721     if ( !mimeTypeOrig )
 722     {
 723         // make up a default value for it
 724         wxString cmd;
 725         wxSplitPath(GetCommand(_T("open")), NULL, &cmd, NULL);
 726         mimeType << _T("application/x-") << cmd;
 727     }
 728     else
 729     {
 730         mimeType = mimeTypeOrig;
 731     }
 732
 733     wxRegKey rkey(wxRegKey::HKCR, m_ext);
 734     return rkey.Create() && rkey.SetValue(_T("Content Type"), mimeType);
 735 }
 736 */
 737
 738 bool wxFileTypeImpl::SetDefaultIcon(const wxString& cmd, int index)
 739 {
 740     wxCHECK_MSG( !m_ext.IsEmpty(), FALSE, _T("SetDefaultIcon() needs extension") );
 741     wxCHECK_MSG( !m_strFileType.IsEmpty(), FALSE, _T("File key not found") );
 742 //    the next line fails on a SMBshare, I think because it is case mangled
 743 //    wxCHECK_MSG( !wxFileExists(cmd), FALSE, _T("Icon file not found.") );
 744
 745     if ( !EnsureExtKeyExists() )
 746         return FALSE;
 747
 748     wxRegKey rkey(wxRegKey::HKCR, m_strFileType + _T("\\DefaultIcon"));
 749
 750     return rkey.Create() &&
 751            rkey.SetValue(_T(""),
 752                          wxString::Format(_T("%s,%d"), cmd.c_str(), index));
 753 }
 754
 755 bool wxFileTypeImpl::SetDescription (const wxString& desc)
 756 {
 757     wxCHECK_MSG( !m_strFileType.IsEmpty(), FALSE, _T("File key not found") );
 758     wxCHECK_MSG( !desc.IsEmpty(), FALSE, _T("No file description supplied") );
 759
 760     if ( !EnsureExtKeyExists() )
 761         return FALSE;
 762
 763     wxRegKey rkey(wxRegKey::HKCR, m_strFileType );
 764
 765     return rkey.Create() &&
 766            rkey.SetValue(_T(""), desc);
 767 }
 768
 769 // ----------------------------------------------------------------------------
 770 // remove file association
 771 // ----------------------------------------------------------------------------
 772
 773 bool wxFileTypeImpl::Unassociate()
 774 {
 775     bool result = TRUE;
 776     if ( !RemoveOpenCommand() )
 777         result = FALSE;
 778     if ( !RemoveDefaultIcon() )
 779         result = FALSE;
 780     if ( !RemoveMimeType() )
 781         result = FALSE;
 782    if ( !RemoveDescription() )
 783         result = FALSE;
 784
 785 /*
 786     //this might hold other keys, eg some have CSLID keys
 787     if ( result )
 788     {
 789         // delete the root key
 790         wxRegKey key(wxRegKey::HKCR, m_ext);
 791         if ( key.Exists() )
 792             result = key.DeleteSelf();
 793     }
 794 */
 795     return result;
 796 }
 797
 798 bool wxFileTypeImpl::RemoveOpenCommand()
 799 {
 800    return RemoveCommand(_T("open"));
 801 }
 802
 803 bool wxFileTypeImpl::RemoveCommand(const wxString& verb)
 804 {
 805     wxCHECK_MSG( !m_ext.IsEmpty() && !verb.IsEmpty(), FALSE,
 806                  _T("RemoveCommand() needs an extension and a verb") );
 807
 808     wxString  sKey = m_strFileType;
 809     wxRegKey rkey(wxRegKey::HKCR, GetVerbPath(verb));
 810
 811     // if the key already doesn't exist, it's a success
 812     return !rkey.Exists() || rkey.DeleteSelf();
 813 }
 814
 815 bool wxFileTypeImpl::RemoveMimeType()
 816 {
 817     wxCHECK_MSG( !m_ext.IsEmpty(), FALSE, _T("RemoveMimeType() needs extension") );
 818
 819     wxRegKey rkey(wxRegKey::HKCR, m_ext);
 820     return !rkey.Exists() || rkey.DeleteSelf();
 821 }
 822
 823 bool wxFileTypeImpl::RemoveDefaultIcon()
 824 {
 825     wxCHECK_MSG( !m_ext.IsEmpty(), FALSE,
 826                  _T("RemoveDefaultIcon() needs extension") );
 827
 828     wxRegKey rkey (wxRegKey::HKCR, m_strFileType  + _T("\\DefaultIcon"));
 829     return !rkey.Exists() || rkey.DeleteSelf();
 830 }
 831
 832 bool wxFileTypeImpl::RemoveDescription()
 833 {
 834     wxCHECK_MSG( !m_ext.IsEmpty(), FALSE,
 835                  _T("RemoveDescription() needs extension") );
 836
 837     wxRegKey rkey (wxRegKey::HKCR, m_strFileType );
 838     return !rkey.Exists() || rkey.DeleteSelf();
 839 }
 840
 841 #endif
 842   // __WIN16__
 843
 844 #endif // wxUSE_MIMETYPE