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 license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "fsvolume.h"
  22 #endif
  23
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 #if wxUSE_FSVOLUME
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/icon.h"
  34     #include "wx/intl.h"
  35 #endif // WX_PRECOMP
  36
  37 #include "wx/dir.h"
  38 #include "wx/hashmap.h"
  39 #include "wx/dynlib.h"
  40 #include "wx/arrimpl.cpp"
  41
  42 #include "wx/volume.h"
  43
  44 #include <shellapi.h>
  45
  46 #ifndef SHGetFileInfo
  47 #ifdef UNICODE
  48 #define SHGetFileInfo SHGetFileInfoW
  49 #else
  50 #define SHGetFileInfo SHGetFileInfoA
  51 #endif
  52 #endif
  53
  54 #ifndef SHGFI_ATTRIBUTES
  55     #define SHGFI_ATTRIBUTES 2048
  56 #endif
  57
  58 #ifndef SFGAO_READONLY
  59     #define SFGAO_READONLY 0x00040000L
  60 #endif
  61
  62 #ifndef SFGAO_REMOVABLE
  63     #define SFGAO_REMOVABLE 0x02000000L
  64 #endif
  65
  66 #ifndef SHGFI_DISPLAYNAME
  67     #define SHGFI_DISPLAYNAME 512
  68 #endif
  69
  70 #ifndef SHGFI_ICON
  71     #define SHGFI_ICON 256
  72 #endif
  73
  74 #ifndef SHGFI_SMALLICON
  75      #define SHGFI_SMALLICON 1
  76 #endif
  77
  78 #ifndef SHGFI_SHELLICONSIZE
  79     #define SHGFI_SHELLICONSIZE 4
  80 #endif
  81
  82 #ifndef SHGFI_OPENICON
  83     #define SHGFI_OPENICON 2
  84 #endif
  85
  86 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  87 // Dynamic library function defs.
  88 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  89
  90 static wxDynamicLibrary s_mprLib;
  91
  92 typedef DWORD (WINAPI* WNetOpenEnumPtr)(DWORD, DWORD, DWORD, LPNETRESOURCE, LPHANDLE);
  93 typedef DWORD (WINAPI* WNetEnumResourcePtr)(HANDLE, LPDWORD, LPVOID, LPDWORD);
  94 typedef DWORD (WINAPI* WNetCloseEnumPtr)(HANDLE);
  95
  96 static WNetOpenEnumPtr s_pWNetOpenEnum;
  97 static WNetEnumResourcePtr s_pWNetEnumResource;
  98 static WNetCloseEnumPtr s_pWNetCloseEnum;
  99
 100 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 101 // Globals/Statics
 102 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 103 static long s_cancelSearch = FALSE;
 104
 105 struct FileInfo
 106 {
 107     FileInfo(unsigned flag=0, wxFSVolumeKind type=wxFS_VOL_OTHER) :
 108         m_flags(flag), m_type(type) {}
 109
 110     FileInfo(const FileInfo& other) { *this = other; }
 111     FileInfo& operator=(const FileInfo& other)
 112     {
 113         m_flags = other.m_flags;
 114         m_type = other.m_type;
 115         return *this;
 116     }
 117
 118     unsigned m_flags;
 119     wxFSVolumeKind m_type;
 120 };
 121 WX_DECLARE_STRING_HASH_MAP(FileInfo, FileInfoMap);
 122 // Cygwin bug (?) destructor for global s_fileInfo is called twice...
 123 static FileInfoMap& GetFileInfoMap()
 124 {
 125     static FileInfoMap s_fileInfo(25);
 126
 127     return s_fileInfo;
 128 }
 129 #define s_fileInfo (GetFileInfoMap())
 130
 131 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 132 // Other initialization.
 133 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 134 #if wxUSE_GUI
 135 // already in wx/iconbndl.h
 136 // WX_DEFINE_OBJARRAY(wxIconArray);
 137 #endif
 138
 139 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 140 // Local helper functions.
 141 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 142
 143 //=============================================================================
 144 // Function: GetBasicFlags
 145 // Purpose: Set basic flags, primarily wxFS_VOL_REMOTE and wxFS_VOL_REMOVABLE.
 146 // Notes: - Local and mapped drives are mounted by definition.  We have no
 147 //          way to determine mounted status of network drives, so assume that
 148 //          all drives are mounted, and let the caller decide otherwise.
 149 //        - Other flags are 'best guess' from type of drive.  The system will
 150 //          not report the file attributes with any degree of accuracy.
 151 //=============================================================================
 152 static unsigned GetBasicFlags(const wxChar* filename)
 153 {
 154     unsigned flags = wxFS_VOL_MOUNTED;
 155
 156     //----------------------------------
 157     // 'Best Guess' based on drive type.
 158     //----------------------------------
 159     wxFSVolumeKind type;
 160     switch(GetDriveType(filename))
 161     {
 162     case DRIVE_FIXED:
 163         type = wxFS_VOL_DISK;
 164         break;
 165
 166     case DRIVE_REMOVABLE:
 167         flags |= wxFS_VOL_REMOVABLE;
 168         type = wxFS_VOL_FLOPPY;
 169         break;
 170
 171     case DRIVE_CDROM:
 172         flags |= wxFS_VOL_REMOVABLE | wxFS_VOL_READONLY;
 173         type = wxFS_VOL_CDROM;
 174         break;
 175
 176     case DRIVE_REMOTE:
 177         flags |= wxFS_VOL_REMOTE;
 178         type = wxFS_VOL_NETWORK;
 179         break;
 180
 181     case DRIVE_NO_ROOT_DIR:
 182         flags &= ~wxFS_VOL_MOUNTED;
 183         type = wxFS_VOL_OTHER;
 184         break;
 185
 186     default:
 187         type = wxFS_VOL_OTHER;
 188         break;
 189     }
 190
 191     //-----------------------------------------------------------------------
 192     // The following will most likely will not modify anything not set above,
 193     // and will not work at all for network shares or empty CD ROM drives.
 194     // But it is a good check if the Win API ever gets better about reporting
 195     // this information.
 196     //-----------------------------------------------------------------------
 197     SHFILEINFO fi;
 198     long rc;
 199     rc = SHGetFileInfo(filename, 0, &fi, sizeof(fi), SHGFI_ATTRIBUTES );
 200     if (!rc)
 201     {
 202         wxLogError(_("Cannot read typename from '%s'!"), filename);
 203     }
 204     else
 205     {
 206         if (fi.dwAttributes & SFGAO_READONLY)
 207             flags |= wxFS_VOL_READONLY;
 208         if (fi.dwAttributes & SFGAO_REMOVABLE)
 209             flags |= wxFS_VOL_REMOVABLE;
 210     }
 211
 212     //------------------
 213     // Flags are cached.
 214     //------------------
 215     s_fileInfo[filename] = FileInfo(flags, type);
 216
 217     return flags;
 218 } // GetBasicFlags
 219
 220 //=============================================================================
 221 // Function: FilteredAdd
 222 // Purpose: Add a file to the list if it meets the filter requirement.
 223 // Notes: - See GetBasicFlags for remarks about the Mounted flag.
 224 //=============================================================================
 225 static bool FilteredAdd(wxArrayString& list, const wxChar* filename,
 226                         unsigned flagsSet, unsigned flagsUnset)
 227 {
 228     bool accept = TRUE;
 229     unsigned flags = GetBasicFlags(filename);
 230
 231     if (flagsSet & wxFS_VOL_MOUNTED && !(flags & wxFS_VOL_MOUNTED))
 232         accept = FALSE;
 233     else if (flagsUnset & wxFS_VOL_MOUNTED && (flags & wxFS_VOL_MOUNTED))
 234         accept = FALSE;
 235     else if (flagsSet & wxFS_VOL_REMOVABLE && !(flags & wxFS_VOL_REMOVABLE))
 236         accept = FALSE;
 237     else if (flagsUnset & wxFS_VOL_REMOVABLE && (flags & wxFS_VOL_REMOVABLE))
 238         accept = FALSE;
 239     else if (flagsSet & wxFS_VOL_READONLY && !(flags & wxFS_VOL_READONLY))
 240         accept = FALSE;
 241     else if (flagsUnset & wxFS_VOL_READONLY && (flags & wxFS_VOL_READONLY))
 242         accept = FALSE;
 243     else if (flagsSet & wxFS_VOL_REMOTE && !(flags & wxFS_VOL_REMOTE))
 244         accept = FALSE;
 245     else if (flagsUnset & wxFS_VOL_REMOTE && (flags & wxFS_VOL_REMOTE))
 246         accept = FALSE;
 247
 248     // Add to the list if passed the filter.
 249     if (accept)
 250         list.Add(filename);
 251
 252     return accept;
 253 } // FilteredAdd
 254
 255 //=============================================================================
 256 // Function: BuildListFromNN
 257 // Purpose: Append or remove items from the list
 258 // Notes: - There is no way to find all disconnected NN items, or even to find
 259 //          all items while determining which are connected and not.  So this
 260 //          function will find either all items or connected items.
 261 //=============================================================================
 262 static void BuildListFromNN(wxArrayString& list, NETRESOURCE* pResSrc,
 263                             unsigned flagsSet, unsigned flagsUnset)
 264 {
 265     HANDLE hEnum;
 266     int rc;
 267
 268     //-----------------------------------------------
 269     // Scope may be all drives or all mounted drives.
 270     //-----------------------------------------------
 271     unsigned scope = RESOURCE_GLOBALNET;
 272     if (flagsSet & wxFS_VOL_MOUNTED)
 273         scope = RESOURCE_CONNECTED;
 274
 275     //----------------------------------------------------------------------
 276     // Enumerate all items, adding only non-containers (ie. network shares).
 277     // Containers cause a recursive call to this function for their own
 278     // enumeration.
 279     //----------------------------------------------------------------------
 280     if (rc = s_pWNetOpenEnum(scope, RESOURCETYPE_DISK, 0, pResSrc, &hEnum), rc == NO_ERROR)
 281     {
 282         DWORD count = 1;
 283         DWORD size = 256;
 284         NETRESOURCE* pRes = (NETRESOURCE*)malloc(size);
 285         memset(pRes, 0, sizeof(NETRESOURCE));
 286         while (rc = s_pWNetEnumResource(hEnum, &count, pRes, &size), rc == NO_ERROR || rc == ERROR_MORE_DATA)
 287         {
 288             if (s_cancelSearch)
 289                 break;
 290
 291             if (rc == ERROR_MORE_DATA)
 292             {
 293                 pRes = (NETRESOURCE*)realloc(pRes, size);
 294                 count = 1;
 295             }
 296             else if (count == 1)
 297             {
 298                 // Enumerate the container.
 299                 if (pRes->dwUsage & RESOURCEUSAGE_CONTAINER)
 300                 {
 301                     BuildListFromNN(list, pRes, flagsSet, flagsUnset);
 302                 }
 303
 304                 // Add the network share.
 305                 else
 306                 {
 307                     wxString filename(pRes->lpRemoteName);
 308
 309                     if (filename.Len())
 310                     {
 311                         if (filename.Last() != '\\')
 312                             filename.Append('\\');
 313
 314                         // The filter function will not know mounted from unmounted, and neither do we unless
 315                         // we are iterating using RESOURCE_CONNECTED, in which case they all are mounted.
 316                         // Volumes on disconnected servers, however, will correctly show as unmounted.
 317                         FilteredAdd(list, filename, flagsSet, flagsUnset&~wxFS_VOL_MOUNTED);
 318                         if (scope == RESOURCE_GLOBALNET)
 319                             s_fileInfo[filename].m_flags &= ~wxFS_VOL_MOUNTED;
 320                     }
 321                 }
 322             }
 323             else if (count == 0)
 324                 break;
 325         }
 326         free(pRes);
 327         s_pWNetCloseEnum(hEnum);
 328     }
 329 } // BuildListFromNN
 330
 331 //=============================================================================
 332 // Function: CompareFcn
 333 // Purpose: Used to sort the NN list alphabetically, case insensitive.
 334 //=============================================================================
 335 static int CompareFcn(const wxString& first, const wxString& second)
 336 {
 337     return wxStricmp(first.c_str(), second.c_str());
 338 } // CompareFcn
 339
 340 //=============================================================================
 341 // Function: BuildRemoteList
 342 // Purpose: Append Network Neighborhood items to the list.
 343 // Notes: - Mounted gets transalated into Connected.  FilteredAdd is told
 344 //          to ignore the Mounted flag since we need to handle it in a weird
 345 //          way manually.
 346 //        - The resulting list is sorted alphabetically.
 347 //=============================================================================
 348 static bool BuildRemoteList(wxArrayString& list, NETRESOURCE* pResSrc,
 349                             unsigned flagsSet, unsigned flagsUnset)
 350 {
 351     // NN query depends on dynamically loaded library.
 352     if (!s_pWNetOpenEnum || !s_pWNetEnumResource || !s_pWNetCloseEnum)
 353     {
 354         wxLogError(_("Failed to load mpr.dll."));
 355         return FALSE;
 356     }
 357
 358     // Don't waste time doing the work if the flags conflict.
 359     if (flagsSet & wxFS_VOL_MOUNTED && flagsUnset & wxFS_VOL_MOUNTED)
 360         return FALSE;
 361
 362     //----------------------------------------------
 363     // Generate the list according to the flags set.
 364     //----------------------------------------------
 365     BuildListFromNN(list, pResSrc, flagsSet, flagsUnset);
 366     list.Sort(CompareFcn);
 367
 368     //-------------------------------------------------------------------------
 369     // If mounted only is requested, then we only need one simple pass.
 370     // Otherwise, we need to build a list of all NN volumes and then apply the
 371     // list of mounted drives to it.
 372     //-------------------------------------------------------------------------
 373     if (!(flagsSet & wxFS_VOL_MOUNTED))
 374     {
 375         // generate.
 376         wxArrayString mounted;
 377         BuildListFromNN(mounted, pResSrc, flagsSet | wxFS_VOL_MOUNTED, flagsUnset & ~wxFS_VOL_MOUNTED);
 378         mounted.Sort(CompareFcn);
 379
 380         // apply list from bottom to top to preserve indexes if removing items.
 381         int iList = list.GetCount()-1;
 382         int iMounted;
 383         for (iMounted = mounted.GetCount()-1; iMounted >= 0 && iList >= 0; iMounted--)
 384         {
 385             int compare;
 386             wxString all(list[iList]);
 387             wxString mount(mounted[iMounted]);
 388
 389             while (compare =
 390                      wxStricmp(list[iList].c_str(), mounted[iMounted].c_str()),
 391                    compare > 0 && iList >= 0)
 392             {
 393                 iList--;
 394                 all = list[iList];
 395             }
 396
 397
 398             if (compare == 0)
 399             {
 400                 // Found the element.  Remove it or mark it mounted.
 401                 if (flagsUnset & wxFS_VOL_MOUNTED)
 402                     list.Remove(iList);
 403                 else
 404                     s_fileInfo[list[iList]].m_flags |= wxFS_VOL_MOUNTED;
 405
 406             }
 407
 408             iList--;
 409         }
 410     }
 411
 412     return TRUE;
 413 } // BuildRemoteList
 414
 415 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 416 // wxFSVolume
 417 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 418
 419 //=============================================================================
 420 // Function: GetVolumes
 421 // Purpose: Generate and return a list of all volumes (drives) available.
 422 // Notes:
 423 //=============================================================================
 424 wxArrayString wxFSVolume::GetVolumes(int flagsSet, int flagsUnset)
 425 {
 426     InterlockedExchange(&s_cancelSearch, FALSE);     // reset
 427
 428     if (!s_mprLib.IsLoaded() && s_mprLib.Load(_T("mpr.dll")))
 429     {
 430 #ifdef UNICODE
 431         s_pWNetOpenEnum = (WNetOpenEnumPtr)s_mprLib.GetSymbol(_T("WNetOpenEnumW"));
 432         s_pWNetEnumResource = (WNetEnumResourcePtr)s_mprLib.GetSymbol(_T("WNetEnumResourceW"));
 433 #else
 434         s_pWNetOpenEnum = (WNetOpenEnumPtr)s_mprLib.GetSymbol(_T("WNetOpenEnumA"));
 435         s_pWNetEnumResource = (WNetEnumResourcePtr)s_mprLib.GetSymbol(_T("WNetEnumResourceA"));
 436 #endif
 437         s_pWNetCloseEnum = (WNetCloseEnumPtr)s_mprLib.GetSymbol(_T("WNetCloseEnum"));
 438     }
 439
 440     wxArrayString list;
 441
 442     //-------------------------------
 443     // Local and mapped drives first.
 444     //-------------------------------
 445     // Allocate the required space for the API call.
 446     size_t chars = GetLogicalDriveStrings(0, 0);
 447     TCHAR* buf = new TCHAR[chars+1];
 448
 449     // Get the list of drives.
 450     chars = GetLogicalDriveStrings(chars, buf);
 451
 452     // Parse the list into an array, applying appropriate filters.
 453     TCHAR *pVol;
 454     pVol = buf;
 455     while (*pVol)
 456     {
 457         FilteredAdd(list, pVol, flagsSet, flagsUnset);
 458         pVol = pVol + wxStrlen(pVol) + 1;
 459     }
 460
 461     // Cleanup.
 462     delete[] buf;
 463
 464     //---------------------------
 465     // Network Neighborhood next.
 466     //---------------------------
 467
 468     // not exclude remote and not removable
 469     if (!(flagsUnset & wxFS_VOL_REMOTE) &&
 470         !(flagsSet & wxFS_VOL_REMOVABLE)
 471        )
 472     {
 473         // The returned list will be sorted alphabetically.  We don't pass
 474         // our in since we don't want to change to order of the local drives.
 475         wxArrayString nn;
 476         if (BuildRemoteList(nn, 0, flagsSet, flagsUnset))
 477         {
 478             for (size_t idx = 0; idx < nn.GetCount(); idx++)
 479                 list.Add(nn[idx]);
 480         }
 481     }
 482
 483     return list;
 484 } // GetVolumes
 485
 486 //=============================================================================
 487 // Function: CancelSearch
 488 // Purpose: Instruct an active search to stop.
 489 // Notes: - This will only sensibly be called by a thread other than the one
 490 //          performing the search.  This is the only thread-safe function
 491 //          provided by the class.
 492 //=============================================================================
 493 void wxFSVolume::CancelSearch()
 494 {
 495     InterlockedExchange(&s_cancelSearch, TRUE);
 496 } // CancelSearch
 497
 498 //=============================================================================
 499 // Function: constructor
 500 // Purpose: default constructor
 501 //=============================================================================
 502 wxFSVolume::wxFSVolume()
 503 {
 504     m_isOk = FALSE;
 505 } // wxVolume
 506
 507 //=============================================================================
 508 // Function: constructor
 509 // Purpose: constructor that calls Create
 510 //=============================================================================
 511 wxFSVolume::wxFSVolume(const wxString& name)
 512 {
 513     Create(name);
 514 } // wxVolume
 515
 516 //=============================================================================
 517 // Function: Create
 518 // Purpose: Finds, logs in, etc. to the request volume.
 519 //=============================================================================
 520 bool wxFSVolume::Create(const wxString& name)
 521 {
 522     // assume fail.
 523     m_isOk = FALSE;
 524
 525     // supplied.
 526     m_volName = name;
 527
 528     // Display name.
 529     SHFILEINFO fi;
 530     long rc = SHGetFileInfo(m_volName, 0, &fi, sizeof(fi), SHGFI_DISPLAYNAME);
 531     if (!rc)
 532     {
 533         wxLogError(_("Cannot read typename from '%s'!"), m_volName.c_str());
 534         return m_isOk;
 535     }
 536     m_dispName = fi.szDisplayName;
 537
 538 #if wxUSE_GUI
 539
 540     m_icons.Alloc(wxFS_VOL_ICO_MAX);
 541     int idx;
 542     wxIcon null;
 543     for (idx = 0; idx < wxFS_VOL_ICO_MAX; idx++)
 544         m_icons.Add(null);
 545
 546 #endif
 547
 548     // all tests passed.
 549     return m_isOk = TRUE;
 550 } // Create
 551
 552 //=============================================================================
 553 // Function: IsOk
 554 // Purpose: returns TRUE if the volume is legal.
 555 // Notes: For fixed disks, it must exist.  For removable disks, it must also
 556 //        be present.  For Network Shares, it must also be logged in, etc.
 557 //=============================================================================
 558 bool wxFSVolume::IsOk() const
 559 {
 560     return m_isOk;
 561 } // IsOk
 562
 563 //=============================================================================
 564 // Function: GetKind
 565 // Purpose: Return the type of the volume.
 566 //=============================================================================
 567 wxFSVolumeKind wxFSVolume::GetKind() const
 568 {
 569     if (!m_isOk)
 570         return wxFS_VOL_OTHER;
 571
 572     FileInfoMap::iterator itr = s_fileInfo.find(m_volName);
 573     if (itr == s_fileInfo.end())
 574         return wxFS_VOL_OTHER;
 575
 576     return itr->second.m_type;
 577 }
 578
 579 //=============================================================================
 580 // Function: GetFlags
 581 // Purpose: Return the caches flags for this volume.
 582 // Notes: - Returns -1 if no flags were cached.
 583 //=============================================================================
 584 int wxFSVolume::GetFlags() const
 585 {
 586     if (!m_isOk)
 587         return -1;
 588
 589     FileInfoMap::iterator itr = s_fileInfo.find(m_volName);
 590     if (itr == s_fileInfo.end())
 591         return -1;
 592
 593     return itr->second.m_flags;
 594 } // GetFlags
 595
 596 #if wxUSE_GUI
 597
 598 //=============================================================================
 599 // Function: GetIcon
 600 // Purpose: return the requested icon.
 601 //=============================================================================
 602 wxIcon wxFSVolume::GetIcon(wxFSIconType type) const
 603 {
 604     wxCHECK_MSG(type < (int)m_icons.GetCount(), wxNullIcon,
 605                 _T("Invalid request for icon type!"));
 606     wxCHECK_MSG( type >= 0 && (size_t)type < m_icons.GetCount(),
 607                  wxIcon(),
 608                  _T("invalid icon index") );
 609
 610     // Load on demand.
 611     if (m_icons[type].IsNull())
 612     {
 613         unsigned flags = 0;
 614         switch (type)
 615         {
 616         case wxFS_VOL_ICO_SMALL:
 617             flags = SHGFI_ICON | SHGFI_SMALLICON;
 618             break;
 619
 620         case wxFS_VOL_ICO_LARGE:
 621             flags = SHGFI_ICON | SHGFI_SHELLICONSIZE;
 622             break;
 623
 624         case wxFS_VOL_ICO_SEL_SMALL:
 625             flags = SHGFI_ICON | SHGFI_SMALLICON | SHGFI_OPENICON;
 626             break;
 627
 628         case wxFS_VOL_ICO_SEL_LARGE:
 629             flags = SHGFI_ICON | SHGFI_SHELLICONSIZE | SHGFI_OPENICON;
 630             break;
 631
 632         case wxFS_VOL_ICO_MAX:
 633             wxFAIL_MSG(_T("wxFS_VOL_ICO_MAX is not valid icon type"));
 634             break;
 635         }
 636
 637         SHFILEINFO fi;
 638         long rc = SHGetFileInfo(m_volName, 0, &fi, sizeof(fi), flags);
 639         m_icons[type].SetHICON((WXHICON)fi.hIcon);
 640         if (!rc || !fi.hIcon)
 641             wxLogError(_("Cannot load icon from '%s'."), m_volName.c_str());
 642     }
 643
 644     return m_icons[type];
 645 } // GetIcon
 646
 647 #endif // wxUSE_GUI
 648
 649 #endif // wxUSE_FSVOLUME
 650