src/msw/volume.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/volume.cpp
   3 // Purpose:     wxFSVolume - encapsulates system volume information
   4 // Author:      George Policello
   5 // Modified by:
   6 // Created:     28 Jan 02
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2002 George Policello
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #if wxUSE_FSVOLUME
  27
  28 #include "wx/volume.h"
  29
  30 #ifndef WX_PRECOMP
  31     #if wxUSE_GUI
  32         #include "wx/icon.h"
  33     #endif
  34     #include "wx/intl.h"
  35     #include "wx/log.h"
  36     #include "wx/hashmap.h"
  37     #include "wx/filefn.h"
  38 #endif // WX_PRECOMP
  39
  40 #include "wx/dir.h"
  41 #include "wx/dynlib.h"
  42 #include "wx/arrimpl.cpp"
  43
  44 // some compilers require including <windows.h> before <shellapi.h> so do it
  45 // even if this is not necessary with most of them
  46 #include "wx/msw/wrapwin.h"
  47 #include <shellapi.h>
  48 #include <shlobj.h>
  49 #include "wx/msw/missing.h"
  50
  51 #if wxUSE_BASE
  52
  53 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  54 // Dynamic library function defs.
  55 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  56
  57 #if wxUSE_DYNLIB_CLASS
  58 static wxDynamicLibrary s_mprLib;
  59 #endif
  60
  61 typedef DWORD (WINAPI* WNetOpenEnumPtr)(DWORD, DWORD, DWORD, LPNETRESOURCE, LPHANDLE);
  62 typedef DWORD (WINAPI* WNetEnumResourcePtr)(HANDLE, LPDWORD, LPVOID, LPDWORD);
  63 typedef DWORD (WINAPI* WNetCloseEnumPtr)(HANDLE);
  64
  65 static WNetOpenEnumPtr s_pWNetOpenEnum;
  66 static WNetEnumResourcePtr s_pWNetEnumResource;
  67 static WNetCloseEnumPtr s_pWNetCloseEnum;
  68
  69 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  70 // Globals/Statics
  71 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  72 static long s_cancelSearch = FALSE;
  73
  74 struct FileInfo
  75 {
  76     FileInfo(unsigned flag=0, wxFSVolumeKind type=wxFS_VOL_OTHER) :
  77         m_flags(flag), m_type(type) {}
  78
  79     FileInfo(const FileInfo& other) { *this = other; }
  80     FileInfo& operator=(const FileInfo& other)
  81     {
  82         m_flags = other.m_flags;
  83         m_type = other.m_type;
  84         return *this;
  85     }
  86
  87     unsigned m_flags;
  88     wxFSVolumeKind m_type;
  89 };
  90 WX_DECLARE_STRING_HASH_MAP(FileInfo, FileInfoMap);
  91 // Cygwin bug (?) destructor for global s_fileInfo is called twice...
  92 static FileInfoMap& GetFileInfoMap()
  93 {
  94     static FileInfoMap s_fileInfo(25);
  95
  96     return s_fileInfo;
  97 }
  98 #define s_fileInfo (GetFileInfoMap())
  99
 100 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 101 // Local helper functions.
 102 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 103
 104 //=============================================================================
 105 // Function: GetBasicFlags
 106 // Purpose: Set basic flags, primarily wxFS_VOL_REMOTE and wxFS_VOL_REMOVABLE.
 107 // Notes: - Local and mapped drives are mounted by definition.  We have no
 108 //          way to determine mounted status of network drives, so assume that
 109 //          all drives are mounted, and let the caller decide otherwise.
 110 //        - Other flags are 'best guess' from type of drive.  The system will
 111 //          not report the file attributes with any degree of accuracy.
 112 //=============================================================================
 113 static unsigned GetBasicFlags(const wxChar* filename)
 114 {
 115     unsigned flags = wxFS_VOL_MOUNTED;
 116
 117     //----------------------------------
 118     // 'Best Guess' based on drive type.
 119     //----------------------------------
 120     wxFSVolumeKind type;
 121     switch(GetDriveType(filename))
 122     {
 123     case DRIVE_FIXED:
 124         type = wxFS_VOL_DISK;
 125         break;
 126
 127     case DRIVE_REMOVABLE:
 128         flags |= wxFS_VOL_REMOVABLE;
 129         type = wxFS_VOL_FLOPPY;
 130         break;
 131
 132     case DRIVE_CDROM:
 133         flags |= wxFS_VOL_REMOVABLE | wxFS_VOL_READONLY;
 134         type = wxFS_VOL_CDROM;
 135         break;
 136
 137     case DRIVE_REMOTE:
 138         flags |= wxFS_VOL_REMOTE;
 139         type = wxFS_VOL_NETWORK;
 140         break;
 141
 142     case DRIVE_NO_ROOT_DIR:
 143         flags &= ~wxFS_VOL_MOUNTED;
 144         type = wxFS_VOL_OTHER;
 145         break;
 146
 147     default:
 148         type = wxFS_VOL_OTHER;
 149         break;
 150     }
 151
 152     //-----------------------------------------------------------------------
 153     // The following most likely will not modify anything not set above,
 154     // and will not work at all for network shares or empty CD ROM drives.
 155     // But it is a good check if the Win API ever gets better about reporting
 156     // this information.
 157     //-----------------------------------------------------------------------
 158     SHFILEINFO fi;
 159     long rc = SHGetFileInfo(filename, 0, &fi, sizeof(fi), SHGFI_ATTRIBUTES);
 160     if (!rc)
 161     {
 162         // this error is not fatal, so don't show a message to the user about
 163         // it, otherwise it would appear every time a generic directory picker
 164         // dialog is used and there is a connected network drive
 165         wxLogLastError(wxT("SHGetFileInfo"));
 166     }
 167     else
 168     {
 169         if (fi.dwAttributes & SFGAO_READONLY)
 170             flags |= wxFS_VOL_READONLY;
 171         if (fi.dwAttributes & SFGAO_REMOVABLE)
 172             flags |= wxFS_VOL_REMOVABLE;
 173     }
 174
 175     //------------------
 176     // Flags are cached.
 177     //------------------
 178     s_fileInfo[filename] = FileInfo(flags, type);
 179
 180     return flags;
 181 } // GetBasicFlags
 182
 183 //=============================================================================
 184 // Function: FilteredAdd
 185 // Purpose: Add a file to the list if it meets the filter requirement.
 186 // Notes: - See GetBasicFlags for remarks about the Mounted flag.
 187 //=============================================================================
 188 static bool FilteredAdd(wxArrayString& list, const wxChar* filename,
 189                         unsigned flagsSet, unsigned flagsUnset)
 190 {
 191     bool accept = true;
 192     unsigned flags = GetBasicFlags(filename);
 193
 194     if (flagsSet & wxFS_VOL_MOUNTED && !(flags & wxFS_VOL_MOUNTED))
 195         accept = false;
 196     else if (flagsUnset & wxFS_VOL_MOUNTED && (flags & wxFS_VOL_MOUNTED))
 197         accept = false;
 198     else if (flagsSet & wxFS_VOL_REMOVABLE && !(flags & wxFS_VOL_REMOVABLE))
 199         accept = false;
 200     else if (flagsUnset & wxFS_VOL_REMOVABLE && (flags & wxFS_VOL_REMOVABLE))
 201         accept = false;
 202     else if (flagsSet & wxFS_VOL_READONLY && !(flags & wxFS_VOL_READONLY))
 203         accept = false;
 204     else if (flagsUnset & wxFS_VOL_READONLY && (flags & wxFS_VOL_READONLY))
 205         accept = false;
 206     else if (flagsSet & wxFS_VOL_REMOTE && !(flags & wxFS_VOL_REMOTE))
 207         accept = false;
 208     else if (flagsUnset & wxFS_VOL_REMOTE && (flags & wxFS_VOL_REMOTE))
 209         accept = false;
 210
 211     // Add to the list if passed the filter.
 212     if (accept)
 213         list.Add(filename);
 214
 215     return accept;
 216 } // FilteredAdd
 217
 218 //=============================================================================
 219 // Function: BuildListFromNN
 220 // Purpose: Append or remove items from the list
 221 // Notes: - There is no way to find all disconnected NN items, or even to find
 222 //          all items while determining which are connected and not.  So this
 223 //          function will find either all items or connected items.
 224 //=============================================================================
 225 static void BuildListFromNN(wxArrayString& list, NETRESOURCE* pResSrc,
 226                             unsigned flagsSet, unsigned flagsUnset)
 227 {
 228     HANDLE hEnum;
 229     int rc;
 230
 231     //-----------------------------------------------
 232     // Scope may be all drives or all mounted drives.
 233     //-----------------------------------------------
 234     unsigned scope = RESOURCE_GLOBALNET;
 235     if (flagsSet & wxFS_VOL_MOUNTED)
 236         scope = RESOURCE_CONNECTED;
 237
 238     //----------------------------------------------------------------------
 239     // Enumerate all items, adding only non-containers (ie. network shares).
 240     // Containers cause a recursive call to this function for their own
 241     // enumeration.
 242     //----------------------------------------------------------------------
 243     if (rc = s_pWNetOpenEnum(scope, RESOURCETYPE_DISK, 0, pResSrc, &hEnum), rc == NO_ERROR)
 244     {
 245         DWORD count = 1;
 246         DWORD size = 256;
 247         NETRESOURCE* pRes = (NETRESOURCE*)malloc(size);
 248         memset(pRes, 0, sizeof(NETRESOURCE));
 249         while (rc = s_pWNetEnumResource(hEnum, &count, pRes, &size), rc == NO_ERROR || rc == ERROR_MORE_DATA)
 250         {
 251             if (s_cancelSearch)
 252                 break;
 253
 254             if (rc == ERROR_MORE_DATA)
 255             {
 256                 pRes = (NETRESOURCE*)realloc(pRes, size);
 257                 count = 1;
 258             }
 259             else if (count == 1)
 260             {
 261                 // Enumerate the container.
 262                 if (pRes->dwUsage & RESOURCEUSAGE_CONTAINER)
 263                 {
 264                     BuildListFromNN(list, pRes, flagsSet, flagsUnset);
 265                 }
 266
 267                 // Add the network share.
 268                 else
 269                 {
 270                     wxString filename(pRes->lpRemoteName);
 271
 272                     // if the drive is unavailable, FilteredAdd() can hang for
 273                     // a long time and, moreover, its failure appears to be not
 274                     // cached so this will happen every time we use it, so try
 275                     // a much quicker wxDirExists() test (which still hangs but
 276                     // for much shorter time) for locally mapped drives first
 277                     // to try to avoid this
 278                     if ( pRes->lpLocalName &&
 279                             *pRes->lpLocalName &&
 280                                 !wxDirExists(pRes->lpLocalName) )
 281                         continue;
 282
 283                     if (!filename.empty())
 284                     {
 285                         if (filename.Last() != '\\')
 286                             filename.Append('\\');
 287
 288                         // The filter function will not know mounted from unmounted, and neither do we unless
 289                         // we are iterating using RESOURCE_CONNECTED, in which case they all are mounted.
 290                         // Volumes on disconnected servers, however, will correctly show as unmounted.
 291                         FilteredAdd(list, filename.t_str(), flagsSet, flagsUnset&~wxFS_VOL_MOUNTED);
 292                         if (scope == RESOURCE_GLOBALNET)
 293                             s_fileInfo[filename].m_flags &= ~wxFS_VOL_MOUNTED;
 294                     }
 295                 }
 296             }
 297             else if (count == 0)
 298                 break;
 299         }
 300         free(pRes);
 301         s_pWNetCloseEnum(hEnum);
 302     }
 303 } // BuildListFromNN
 304
 305 //=============================================================================
 306 // Function: CompareFcn
 307 // Purpose: Used to sort the NN list alphabetically, case insensitive.
 308 //=============================================================================
 309 static int CompareFcn(const wxString& first, const wxString& second)
 310 {
 311     return wxStricmp(first.c_str(), second.c_str());
 312 } // CompareFcn
 313
 314 //=============================================================================
 315 // Function: BuildRemoteList
 316 // Purpose: Append Network Neighborhood items to the list.
 317 // Notes: - Mounted gets transalated into Connected.  FilteredAdd is told
 318 //          to ignore the Mounted flag since we need to handle it in a weird
 319 //          way manually.
 320 //        - The resulting list is sorted alphabetically.
 321 //=============================================================================
 322 static bool BuildRemoteList(wxArrayString& list, NETRESOURCE* pResSrc,
 323                             unsigned flagsSet, unsigned flagsUnset)
 324 {
 325     // NN query depends on dynamically loaded library.
 326     if (!s_pWNetOpenEnum || !s_pWNetEnumResource || !s_pWNetCloseEnum)
 327     {
 328         wxLogError(_("Failed to load mpr.dll."));
 329         return false;
 330     }
 331
 332     // Don't waste time doing the work if the flags conflict.
 333     if (flagsSet & wxFS_VOL_MOUNTED && flagsUnset & wxFS_VOL_MOUNTED)
 334         return false;
 335
 336     //----------------------------------------------
 337     // Generate the list according to the flags set.
 338     //----------------------------------------------
 339     BuildListFromNN(list, pResSrc, flagsSet, flagsUnset);
 340     list.Sort(CompareFcn);
 341
 342     //-------------------------------------------------------------------------
 343     // If mounted only is requested, then we only need one simple pass.
 344     // Otherwise, we need to build a list of all NN volumes and then apply the
 345     // list of mounted drives to it.
 346     //-------------------------------------------------------------------------
 347     if (!(flagsSet & wxFS_VOL_MOUNTED))
 348     {
 349         // generate.
 350         wxArrayString mounted;
 351         BuildListFromNN(mounted, pResSrc, flagsSet | wxFS_VOL_MOUNTED, flagsUnset & ~wxFS_VOL_MOUNTED);
 352         mounted.Sort(CompareFcn);
 353
 354         // apply list from bottom to top to preserve indexes if removing items.
 355         ssize_t iList = list.GetCount()-1;
 356         for (ssize_t iMounted = mounted.GetCount()-1; iMounted >= 0 && iList >= 0; iMounted--)
 357         {
 358             int compare;
 359             wxString all(list[iList]);
 360             wxString mount(mounted[iMounted]);
 361
 362             while (compare =
 363                      wxStricmp(list[iList].c_str(), mounted[iMounted].c_str()),
 364                    compare > 0 && iList >= 0)
 365             {
 366                 iList--;
 367                 all = list[iList];
 368             }
 369
 370
 371             if (compare == 0)
 372             {
 373                 // Found the element.  Remove it or mark it mounted.
 374                 if (flagsUnset & wxFS_VOL_MOUNTED)
 375                     list.RemoveAt(iList);
 376                 else
 377                     s_fileInfo[list[iList]].m_flags |= wxFS_VOL_MOUNTED;
 378
 379             }
 380
 381             iList--;
 382         }
 383     }
 384
 385     return true;
 386 } // BuildRemoteList
 387
 388 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 389 // wxFSVolume
 390 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 391
 392 //=============================================================================
 393 // Function: GetVolumes
 394 // Purpose: Generate and return a list of all volumes (drives) available.
 395 // Notes:
 396 //=============================================================================
 397 wxArrayString wxFSVolumeBase::GetVolumes(int flagsSet, int flagsUnset)
 398 {
 399     ::InterlockedExchange(&s_cancelSearch, FALSE);     // reset
 400
 401 #if wxUSE_DYNLIB_CLASS
 402     if (!s_mprLib.IsLoaded() && s_mprLib.Load(wxT("mpr.dll")))
 403     {
 404 #ifdef UNICODE
 405         s_pWNetOpenEnum = (WNetOpenEnumPtr)s_mprLib.GetSymbol(wxT("WNetOpenEnumW"));
 406         s_pWNetEnumResource = (WNetEnumResourcePtr)s_mprLib.GetSymbol(wxT("WNetEnumResourceW"));
 407 #else
 408         s_pWNetOpenEnum = (WNetOpenEnumPtr)s_mprLib.GetSymbol(wxT("WNetOpenEnumA"));
 409         s_pWNetEnumResource = (WNetEnumResourcePtr)s_mprLib.GetSymbol(wxT("WNetEnumResourceA"));
 410 #endif
 411         s_pWNetCloseEnum = (WNetCloseEnumPtr)s_mprLib.GetSymbol(wxT("WNetCloseEnum"));
 412     }
 413 #endif
 414
 415     wxArrayString list;
 416
 417     //-------------------------------
 418     // Local and mapped drives first.
 419     //-------------------------------
 420     // Allocate the required space for the API call.
 421     const DWORD chars = GetLogicalDriveStrings(0, NULL);
 422     TCHAR* buf = new TCHAR[chars+1];
 423
 424     // Get the list of drives.
 425     GetLogicalDriveStrings(chars, buf);
 426
 427     // Parse the list into an array, applying appropriate filters.
 428     TCHAR *pVol;
 429     pVol = buf;
 430     while (*pVol)
 431     {
 432         FilteredAdd(list, pVol, flagsSet, flagsUnset);
 433         pVol = pVol + wxStrlen(pVol) + 1;
 434     }
 435
 436     // Cleanup.
 437     delete[] buf;
 438
 439     //---------------------------
 440     // Network Neighborhood next.
 441     //---------------------------
 442
 443     // not exclude remote and not removable
 444     if (!(flagsUnset & wxFS_VOL_REMOTE) &&
 445         !(flagsSet & wxFS_VOL_REMOVABLE)
 446        )
 447     {
 448         // The returned list will be sorted alphabetically.  We don't pass
 449         // our in since we don't want to change to order of the local drives.
 450         wxArrayString nn;
 451         if (BuildRemoteList(nn, 0, flagsSet, flagsUnset))
 452         {
 453             for (size_t idx = 0; idx < nn.GetCount(); idx++)
 454                 list.Add(nn[idx]);
 455         }
 456     }
 457
 458     return list;
 459 } // GetVolumes
 460
 461 //=============================================================================
 462 // Function: CancelSearch
 463 // Purpose: Instruct an active search to stop.
 464 // Notes: - This will only sensibly be called by a thread other than the one
 465 //          performing the search.  This is the only thread-safe function
 466 //          provided by the class.
 467 //=============================================================================
 468 void wxFSVolumeBase::CancelSearch()
 469 {
 470     ::InterlockedExchange(&s_cancelSearch, TRUE);
 471 } // CancelSearch
 472
 473 //=============================================================================
 474 // Function: constructor
 475 // Purpose: default constructor
 476 //=============================================================================
 477 wxFSVolumeBase::wxFSVolumeBase()
 478 {
 479     m_isOk = false;
 480 } // wxVolume
 481
 482 //=============================================================================
 483 // Function: constructor
 484 // Purpose: constructor that calls Create
 485 //=============================================================================
 486 wxFSVolumeBase::wxFSVolumeBase(const wxString& name)
 487 {
 488     Create(name);
 489 } // wxVolume
 490
 491 //=============================================================================
 492 // Function: Create
 493 // Purpose: Finds, logs in, etc. to the request volume.
 494 //=============================================================================
 495 bool wxFSVolumeBase::Create(const wxString& name)
 496 {
 497     // assume fail.
 498     m_isOk = false;
 499
 500     // supplied.
 501     m_volName = name;
 502
 503     // Display name.
 504     SHFILEINFO fi;
 505     long rc = SHGetFileInfo(m_volName.t_str(), 0, &fi, sizeof(fi), SHGFI_DISPLAYNAME);
 506     if (!rc)
 507     {
 508         wxLogError(_("Cannot read typename from '%s'!"), m_volName.c_str());
 509         return m_isOk;
 510     }
 511     m_dispName = fi.szDisplayName;
 512
 513     // all tests passed.
 514     return m_isOk = true;
 515 } // Create
 516
 517 //=============================================================================
 518 // Function: IsOk
 519 // Purpose: returns true if the volume is legal.
 520 // Notes: For fixed disks, it must exist.  For removable disks, it must also
 521 //        be present.  For Network Shares, it must also be logged in, etc.
 522 //=============================================================================
 523 bool wxFSVolumeBase::IsOk() const
 524 {
 525     return m_isOk;
 526 } // IsOk
 527
 528 //=============================================================================
 529 // Function: GetKind
 530 // Purpose: Return the type of the volume.
 531 //=============================================================================
 532 wxFSVolumeKind wxFSVolumeBase::GetKind() const
 533 {
 534     if (!m_isOk)
 535         return wxFS_VOL_OTHER;
 536
 537     FileInfoMap::iterator itr = s_fileInfo.find(m_volName);
 538     if (itr == s_fileInfo.end())
 539         return wxFS_VOL_OTHER;
 540
 541     return itr->second.m_type;
 542 }
 543
 544 //=============================================================================
 545 // Function: GetFlags
 546 // Purpose: Return the caches flags for this volume.
 547 // Notes: - Returns -1 if no flags were cached.
 548 //=============================================================================
 549 int wxFSVolumeBase::GetFlags() const
 550 {
 551     if (!m_isOk)
 552         return -1;
 553
 554     FileInfoMap::iterator itr = s_fileInfo.find(m_volName);
 555     if (itr == s_fileInfo.end())
 556         return -1;
 557
 558     return itr->second.m_flags;
 559 } // GetFlags
 560
 561 #endif // wxUSE_BASE
 562
 563 // ============================================================================
 564 // wxFSVolume
 565 // ============================================================================
 566
 567 #if wxUSE_GUI
 568
 569 void wxFSVolume::InitIcons()
 570 {
 571     m_icons.Alloc(wxFS_VOL_ICO_MAX);
 572     wxIcon null;
 573     for (int idx = 0; idx < wxFS_VOL_ICO_MAX; idx++)
 574         m_icons.Add(null);
 575 }
 576
 577 //=============================================================================
 578 // Function: GetIcon
 579 // Purpose: return the requested icon.
 580 //=============================================================================
 581
 582 wxIcon wxFSVolume::GetIcon(wxFSIconType type) const
 583 {
 584     wxCHECK_MSG( type >= 0 && (size_t)type < m_icons.GetCount(), wxNullIcon,
 585                  wxT("wxFSIconType::GetIcon(): invalid icon index") );
 586
 587 #ifdef __WXMSW__
 588     // Load on demand.
 589     if (m_icons[type].IsNull())
 590     {
 591         UINT flags = SHGFI_ICON;
 592         switch (type)
 593         {
 594         case wxFS_VOL_ICO_SMALL:
 595             flags |= SHGFI_SMALLICON;
 596             break;
 597
 598         case wxFS_VOL_ICO_LARGE:
 599             flags |= SHGFI_SHELLICONSIZE;
 600             break;
 601
 602         case wxFS_VOL_ICO_SEL_SMALL:
 603             flags |= SHGFI_SMALLICON | SHGFI_OPENICON;
 604             break;
 605
 606         case wxFS_VOL_ICO_SEL_LARGE:
 607             flags |= SHGFI_SHELLICONSIZE | SHGFI_OPENICON;
 608             break;
 609
 610         case wxFS_VOL_ICO_MAX:
 611             wxFAIL_MSG(wxT("wxFS_VOL_ICO_MAX is not valid icon type"));
 612             break;
 613         }
 614
 615         SHFILEINFO fi;
 616         long rc = SHGetFileInfo(m_volName.t_str(), 0, &fi, sizeof(fi), flags);
 617         m_icons[type].SetHICON((WXHICON)fi.hIcon);
 618         if (!rc || !fi.hIcon)
 619         {
 620             wxLogError(_("Cannot load icon from '%s'."), m_volName.c_str());
 621         }
 622     }
 623
 624     return m_icons[type];
 625 #else
 626     wxFAIL_MSG(wxS("Can't convert HICON to wxIcon in this port."));
 627     return wxNullIcon;
 628 #endif
 629 } // GetIcon
 630
 631 #endif // wxUSE_GUI
 632
 633 #endif // wxUSE_FSVOLUME