dlls/user32/exticon.c

   1 /*
   2  *      icon extracting
   3  *
   4  * taken and slightly changed from shell
   5  * this should replace the icon extraction code in shell32 and shell16 once
   6  * it needs a serious test for compliance with the native API
   7  *
   8  * Copyright 2000 Juergen Schmied
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include <stdarg.h>
  26 #include <string.h>
  27 #include <stdlib.h>     /* abs() */
  28 #include <sys/types.h>
  29
  30 #define NONAMELESSUNION
  31 #define NONAMELESSSTRUCT
  32 #include "windef.h"
  33 #include "winbase.h"
  34 #include "wingdi.h"
  35 #include "winuser.h"
  36 #include "winnls.h"
  37 #include "user_private.h"
  38 #include "wine/debug.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(icon);
  41
  42 #include "pshpack1.h"
  43
  44 typedef struct
  45 {
  46     BYTE        bWidth;          /* Width, in pixels, of the image      */
  47     BYTE        bHeight;         /* Height, in pixels, of the image     */
  48     BYTE        bColorCount;     /* Number of colors in image (0 if >=8bpp) */
  49     BYTE        bReserved;       /* Reserved ( must be 0)               */
  50     WORD        wPlanes;         /* Color Planes                        */
  51     WORD        wBitCount;       /* Bits per pixel                      */
  52     DWORD       dwBytesInRes;    /* How many bytes in this resource?    */
  53     DWORD       dwImageOffset;   /* Where in the file is this image?    */
  54 } icoICONDIRENTRY, *LPicoICONDIRENTRY;
  55
  56 typedef struct
  57 {
  58     WORD            idReserved;   /* Reserved (must be 0) */
  59     WORD            idType;       /* Resource Type (RES_ICON or RES_CURSOR) */
  60     WORD            idCount;      /* How many images */
  61     icoICONDIRENTRY idEntries[1]; /* An entry for each image (idCount of 'em) */
  62 } icoICONDIR, *LPicoICONDIR;
  63
  64 typedef struct
  65 {
  66     WORD offset;
  67     WORD length;
  68     WORD flags;
  69     WORD id;
  70     WORD handle;
  71     WORD usage;
  72 } NE_NAMEINFO;
  73
  74 typedef struct
  75 {
  76     WORD  type_id;
  77     WORD  count;
  78     DWORD resloader;
  79 } NE_TYPEINFO;
  80
  81 #define NE_RSCTYPE_ICON        0x8003
  82 #define NE_RSCTYPE_GROUP_ICON  0x800e
  83
  84 #include "poppack.h"
  85
  86 #if 0
  87 static void dumpIcoDirEntry ( LPicoICONDIRENTRY entry )
  88 {
  89         TRACE("width = 0x%08x height = 0x%08x\n", entry->bWidth, entry->bHeight);
  90         TRACE("colors = 0x%08x planes = 0x%08x\n", entry->bColorCount, entry->wPlanes);
  91         TRACE("bitcount = 0x%08x bytesinres = 0x%08lx offset = 0x%08lx\n",
  92         entry->wBitCount, entry->dwBytesInRes, entry->dwImageOffset);
  93 }
  94 static void dumpIcoDir ( LPicoICONDIR entry )
  95 {
  96         TRACE("type = 0x%08x count = 0x%08x\n", entry->idType, entry->idCount);
  97 }
  98 #endif
  99
 100 /**********************************************************************
 101  *  find_entry_by_id
 102  *
 103  * Find an entry by id in a resource directory
 104  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
 105  */
 106 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
 107                                                          WORD id, const void *root )
 108 {
 109     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
 110     int min, max, pos;
 111
 112     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
 113     min = dir->NumberOfNamedEntries;
 114     max = min + dir->NumberOfIdEntries - 1;
 115     while (min <= max)
 116     {
 117         pos = (min + max) / 2;
 118         if (entry[pos].u.Id == id)
 119             return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry[pos].u2.s2.OffsetToDirectory);
 120         if (entry[pos].u.Id > id) max = pos - 1;
 121         else min = pos + 1;
 122     }
 123     return NULL;
 124 }
 125
 126 /**********************************************************************
 127  *  find_entry_default
 128  *
 129  * Find a default entry in a resource directory
 130  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
 131  */
 132 static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
 133                                                            const void *root )
 134 {
 135     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
 136     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
 137     return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry->u2.s2.OffsetToDirectory);
 138 }
 139
 140 /*************************************************************************
 141  *                              USER32_GetResourceTable
 142  */
 143 static DWORD USER32_GetResourceTable(LPBYTE peimage,DWORD pesize,LPBYTE *retptr)
 144 {
 145         IMAGE_DOS_HEADER        * mz_header;
 146
 147         TRACE("%p %p\n", peimage, retptr);
 148
 149         *retptr = NULL;
 150
 151         mz_header = (IMAGE_DOS_HEADER*) peimage;
 152
 153         if (mz_header->e_magic != IMAGE_DOS_SIGNATURE)
 154         {
 155           if (mz_header->e_cblp == 1)   /* .ICO file ? */
 156           {
 157             *retptr = (LPBYTE)-1;       /* ICONHEADER.idType, must be 1 */
 158             return 1;
 159           }
 160           else
 161             return 0; /* failed */
 162         }
 163         if (mz_header->e_lfanew >= pesize) {
 164             return 0; /* failed, happens with PKZIP DOS Exes for instance. */
 165         }
 166         if (*((DWORD*)(peimage + mz_header->e_lfanew)) == IMAGE_NT_SIGNATURE )
 167           return IMAGE_NT_SIGNATURE;
 168
 169         if (*((WORD*)(peimage + mz_header->e_lfanew)) == IMAGE_OS2_SIGNATURE )
 170         {
 171           IMAGE_OS2_HEADER      * ne_header;
 172
 173           ne_header = (IMAGE_OS2_HEADER*)(peimage + mz_header->e_lfanew);
 174
 175           if (ne_header->ne_magic != IMAGE_OS2_SIGNATURE)
 176             return 0;
 177
 178           if( (ne_header->ne_restab - ne_header->ne_rsrctab) <= sizeof(NE_TYPEINFO) )
 179             *retptr = (LPBYTE)-1;
 180           else
 181             *retptr = peimage + mz_header->e_lfanew + ne_header->ne_rsrctab;
 182
 183           return IMAGE_OS2_SIGNATURE;
 184         }
 185         return 0; /* failed */
 186 }
 187 /*************************************************************************
 188  *                      USER32_LoadResource
 189  */
 190 static BYTE * USER32_LoadResource( LPBYTE peimage, NE_NAMEINFO* pNInfo, WORD sizeShift, ULONG *uSize)
 191 {
 192         TRACE("%p %p 0x%08x\n", peimage, pNInfo, sizeShift);
 193
 194         *uSize = (DWORD)pNInfo->length << sizeShift;
 195         return peimage + ((DWORD)pNInfo->offset << sizeShift);
 196 }
 197
 198 /*************************************************************************
 199  *                      ICO_LoadIcon
 200  */
 201 static BYTE * ICO_LoadIcon( LPBYTE peimage, LPicoICONDIRENTRY lpiIDE, ULONG *uSize)
 202 {
 203         TRACE("%p %p\n", peimage, lpiIDE);
 204
 205         *uSize = lpiIDE->dwBytesInRes;
 206         return peimage + lpiIDE->dwImageOffset;
 207 }
 208
 209 /*************************************************************************
 210  *                      ICO_GetIconDirectory
 211  *
 212  * Reads .ico file and build phony ICONDIR struct
 213  */
 214 static BYTE * ICO_GetIconDirectory( LPBYTE peimage, LPicoICONDIR* lplpiID, ULONG *uSize )
 215 {
 216         CURSORICONFILEDIR *lpcid;       /* icon resource in resource-dir format */
 217         CURSORICONDIR   * lpID;         /* icon resource in resource format */
 218         int             i;
 219
 220         TRACE("%p %p\n", peimage, lplpiID);
 221
 222         lpcid = (CURSORICONFILEDIR*)peimage;
 223
 224         if( lpcid->idReserved || (lpcid->idType != 1) || (!lpcid->idCount) )
 225           return 0;
 226
 227         /* allocate the phony ICONDIR structure */
 228         *uSize = FIELD_OFFSET(CURSORICONDIR, idEntries[lpcid->idCount]);
 229         if( (lpID = HeapAlloc(GetProcessHeap(),0, *uSize) ))
 230         {
 231           /* copy the header */
 232           lpID->idReserved = lpcid->idReserved;
 233           lpID->idType = lpcid->idType;
 234           lpID->idCount = lpcid->idCount;
 235
 236           /* copy the entries */
 237           for( i=0; i < lpcid->idCount; i++ )
 238           {
 239             memcpy(&lpID->idEntries[i], &lpcid->idEntries[i], sizeof(CURSORICONDIRENTRY) - 2);
 240             lpID->idEntries[i].wResId = i;
 241           }
 242
 243           *lplpiID = (LPicoICONDIR)peimage;
 244           return (BYTE *)lpID;
 245         }
 246         return 0;
 247 }
 248
 249 /*************************************************************************
 250  *      ICO_ExtractIconExW              [internal]
 251  *
 252  * NOTES
 253  *  nIcons = 0: returns number of Icons in file
 254  *
 255  * returns
 256  *  invalid file: -1
 257  *  failure:0;
 258  *  success: number of icons in file (nIcons = 0) or nr of icons retrieved
 259  */
 260 static UINT ICO_ExtractIconExW(
 261         LPCWSTR lpszExeFileName,
 262         HICON * RetPtr,
 263         INT nIconIndex,
 264         UINT nIcons,
 265         UINT cxDesired,
 266         UINT cyDesired,
 267         UINT *pIconId,
 268         UINT flags)
 269 {
 270         UINT            ret = 0;
 271         UINT            cx1, cx2, cy1, cy2;
 272         LPBYTE          pData;
 273         DWORD           sig;
 274         HANDLE          hFile;
 275         UINT16          iconDirCount = 0,iconCount = 0;
 276         LPBYTE          peimage;
 277         HANDLE          fmapping;
 278         DWORD           fsizeh,fsizel;
 279         WCHAR           szExePath[MAX_PATH];
 280         DWORD           dwSearchReturn;
 281
 282         TRACE("%s, %d, %d %p 0x%08x\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons, pIconId, flags);
 283
 284         dwSearchReturn = SearchPathW(NULL, lpszExeFileName, NULL, ARRAY_SIZE(szExePath), szExePath, NULL);
 285         if ((dwSearchReturn == 0) || (dwSearchReturn > ARRAY_SIZE(szExePath)))
 286         {
 287             WARN("File %s not found or path too long\n", debugstr_w(lpszExeFileName));
 288             return -1;
 289         }
 290
 291         hFile = CreateFileW(szExePath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
 292         if (hFile == INVALID_HANDLE_VALUE) return ret;
 293         fsizel = GetFileSize(hFile,&fsizeh);
 294
 295         /* Map the file */
 296         fmapping = CreateFileMappingW(hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL);
 297         CloseHandle(hFile);
 298         if (!fmapping)
 299         {
 300           WARN("CreateFileMapping error %d\n", GetLastError() );
 301           return 0xFFFFFFFF;
 302         }
 303
 304         if (!(peimage = MapViewOfFile(fmapping, FILE_MAP_READ, 0, 0, 0)))
 305         {
 306           WARN("MapViewOfFile error %d\n", GetLastError() );
 307           CloseHandle(fmapping);
 308           return 0xFFFFFFFF;
 309         }
 310         CloseHandle(fmapping);
 311
 312         cx1 = LOWORD(cxDesired);
 313         cx2 = HIWORD(cxDesired);
 314         cy1 = LOWORD(cyDesired);
 315         cy2 = HIWORD(cyDesired);
 316
 317         if (pIconId) /* Invalidate first icon identifier */
 318                 *pIconId = 0xFFFFFFFF;
 319
 320         if (!pIconId) /* if no icon identifier array present use the icon handle array as intermediate storage */
 321           pIconId = (UINT*)RetPtr;
 322
 323         sig = USER32_GetResourceTable(peimage, fsizel, &pData);
 324
 325 /* ico file or NE exe/dll*/
 326         if (sig==IMAGE_OS2_SIGNATURE || sig==1) /* .ICO file */
 327         {
 328           BYTE          *pCIDir = 0;
 329           NE_TYPEINFO   *pTInfo = (NE_TYPEINFO*)(pData + 2);
 330           NE_NAMEINFO   *pIconStorage = NULL;
 331           NE_NAMEINFO   *pIconDir = NULL;
 332           LPicoICONDIR  lpiID = NULL;
 333           ULONG         uSize = 0;
 334
 335           TRACE("-- OS2/icon Signature (0x%08x)\n", sig);
 336
 337           if (pData == (BYTE*)-1)
 338           {
 339             pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize);     /* check for .ICO file */
 340             if (pCIDir)
 341             {
 342               iconDirCount = 1; iconCount = lpiID->idCount;
 343               TRACE("-- icon found %p 0x%08x 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
 344             }
 345           }
 346           else while (pTInfo->type_id && !(pIconStorage && pIconDir))
 347           {
 348             if (pTInfo->type_id == NE_RSCTYPE_GROUP_ICON)       /* find icon directory and icon repository */
 349             {
 350               iconDirCount = pTInfo->count;
 351               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 352               TRACE("\tfound directory - %i icon families\n", iconDirCount);
 353             }
 354             if (pTInfo->type_id == NE_RSCTYPE_ICON)
 355             {
 356               iconCount = pTInfo->count;
 357               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 358               TRACE("\ttotal icons - %i\n", iconCount);
 359             }
 360             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 361           }
 362
 363           if ((pIconStorage && pIconDir) || lpiID)        /* load resources and create icons */
 364           {
 365             if (nIcons == 0)
 366             {
 367               ret = iconDirCount;
 368               if (lpiID)        /* *.ico file, deallocate heap pointer*/
 369                 HeapFree(GetProcessHeap(), 0, pCIDir);
 370             }
 371             else if (nIconIndex < iconDirCount)
 372             {
 373               UINT16   i, icon;
 374               if (nIcons > iconDirCount - nIconIndex)
 375                 nIcons = iconDirCount - nIconIndex;
 376
 377               for (i = 0; i < nIcons; i++)
 378               {
 379                 /* .ICO files have only one icon directory */
 380                 if (lpiID == NULL)      /* not *.ico */
 381                   pCIDir = USER32_LoadResource(peimage, pIconDir + i + nIconIndex, *(WORD*)pData, &uSize);
 382                 pIconId[i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE, cx1, cy1, flags);
 383                 if (cx2 && cy2) pIconId[++i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE,  cx2, cy2, flags);
 384               }
 385               if (lpiID)        /* *.ico file, deallocate heap pointer*/
 386                 HeapFree(GetProcessHeap(), 0, pCIDir);
 387
 388               for (icon = 0; icon < nIcons; icon++)
 389               {
 390                 pCIDir = NULL;
 391                 if (lpiID)
 392                   pCIDir = ICO_LoadIcon(peimage, lpiID->idEntries + (int)pIconId[icon], &uSize);
 393                 else
 394                   for (i = 0; i < iconCount; i++)
 395                     if (pIconStorage[i].id == ((int)pIconId[icon] | 0x8000) )
 396                       pCIDir = USER32_LoadResource(peimage, pIconStorage + i, *(WORD*)pData, &uSize);
 397
 398                 if (pCIDir)
 399                 {
 400                   RetPtr[icon] = CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
 401                                                                  cx1, cy1, flags);
 402                   if (cx2 && cy2)
 403                       RetPtr[++icon] = CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
 404                                                                        cx2, cy2, flags);
 405                 }
 406                 else
 407                   RetPtr[icon] = 0;
 408               }
 409               ret = icon;       /* return number of retrieved icons */
 410             }
 411           }
 412         }
 413 /* end ico file */
 414
 415 /* exe/dll */
 416         else if( sig == IMAGE_NT_SIGNATURE )
 417         {
 418         BYTE *idata, *igdata;
 419         const IMAGE_RESOURCE_DIRECTORY *rootresdir, *iconresdir, *icongroupresdir;
 420         const IMAGE_RESOURCE_DATA_ENTRY *idataent, *igdataent;
 421         const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
 422         ULONG size;
 423         UINT i;
 424
 425         rootresdir = RtlImageDirectoryEntryToData((HMODULE)peimage, FALSE, IMAGE_DIRECTORY_ENTRY_RESOURCE, &size);
 426         if (!rootresdir)
 427         {
 428             WARN("haven't found section for resource directory.\n");
 429             goto end;
 430         }
 431
 432           /* search for the group icon directory */
 433           if (!(icongroupresdir = find_entry_by_id(rootresdir, LOWORD(RT_GROUP_ICON), rootresdir)))
 434           {
 435             WARN("No Icongroupresourcedirectory!\n");
 436             goto end;           /* failure */
 437           }
 438           iconDirCount = icongroupresdir->NumberOfNamedEntries + icongroupresdir->NumberOfIdEntries;
 439
 440           /* only number of icons requested */
 441           if( !pIconId )
 442           {
 443             ret = iconDirCount;
 444             goto end;           /* success */
 445           }
 446
 447           if( nIconIndex < 0 )
 448           {
 449             /* search resource id */
 450             int n = 0;
 451             int iId = abs(nIconIndex);
 452             const IMAGE_RESOURCE_DIRECTORY_ENTRY* xprdeTmp = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1);
 453
 454             while(n<iconDirCount && xprdeTmp)
 455             {
 456               if(xprdeTmp->u.Id ==  iId)
 457               {
 458                   nIconIndex = n;
 459                   break;
 460               }
 461               n++;
 462               xprdeTmp++;
 463             }
 464             if (nIconIndex < 0)
 465             {
 466               WARN("resource id %d not found\n", iId);
 467               goto end;         /* failure */
 468             }
 469           }
 470           else
 471           {
 472             /* check nIconIndex to be in range */
 473             if (nIconIndex >= iconDirCount)
 474             {
 475               WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 476               goto end;         /* failure */
 477             }
 478           }
 479
 480           /* assure we don't get too much */
 481           if( nIcons > iconDirCount - nIconIndex )
 482             nIcons = iconDirCount - nIconIndex;
 483
 484           /* starting from specified index */
 485           xresent = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1) + nIconIndex;
 486
 487           for (i=0; i < nIcons; i++,xresent++)
 488           {
 489             const IMAGE_RESOURCE_DIRECTORY *resdir;
 490
 491             /* go down this resource entry, name */
 492             resdir = (const IMAGE_RESOURCE_DIRECTORY *)((const char *)rootresdir + xresent->u2.s2.OffsetToDirectory);
 493
 494             /* default language (0) */
 495             resdir = find_entry_default(resdir,rootresdir);
 496             igdataent = (const IMAGE_RESOURCE_DATA_ENTRY*)resdir;
 497
 498             /* lookup address in mapped image for virtual address */
 499         igdata = RtlImageRvaToVa(RtlImageNtHeader((HMODULE)peimage), (HMODULE)peimage, igdataent->OffsetToData, NULL);
 500         if (!igdata)
 501             {
 502               FIXME("no matching real address for icongroup!\n");
 503               goto end; /* failure */
 504             }
 505             pIconId[i] = LookupIconIdFromDirectoryEx(igdata, TRUE, cx1, cy1, flags);
 506             if (cx2 && cy2) pIconId[++i] = LookupIconIdFromDirectoryEx(igdata, TRUE, cx2, cy2, flags);
 507           }
 508
 509           if (!(iconresdir=find_entry_by_id(rootresdir,LOWORD(RT_ICON),rootresdir)))
 510           {
 511             WARN("No Iconresourcedirectory!\n");
 512             goto end;           /* failure */
 513           }
 514
 515           for (i=0; i<nIcons; i++)
 516           {
 517             const IMAGE_RESOURCE_DIRECTORY *xresdir;
 518             xresdir = find_entry_by_id(iconresdir, LOWORD(pIconId[i]), rootresdir);
 519             if( !xresdir )
 520             {
 521               WARN("icon entry %d not found\n", LOWORD(pIconId[i]));
 522               RetPtr[i]=0;
 523               continue;
 524             }
 525             xresdir = find_entry_default(xresdir, rootresdir);
 526             idataent = (const IMAGE_RESOURCE_DATA_ENTRY*)xresdir;
 527
 528         idata = RtlImageRvaToVa(RtlImageNtHeader((HMODULE)peimage), (HMODULE)peimage, idataent->OffsetToData, NULL);
 529         if (!idata)
 530             {
 531               WARN("no matching real address found for icondata!\n");
 532               RetPtr[i]=0;
 533               continue;
 534             }
 535             RetPtr[i] = CreateIconFromResourceEx(idata, idataent->Size, TRUE, 0x00030000, cx1, cy1, flags);
 536             if (cx2 && cy2)
 537                 RetPtr[++i] = CreateIconFromResourceEx(idata, idataent->Size, TRUE, 0x00030000, cx2, cy2, flags);
 538           }
 539           ret = i;      /* return number of retrieved icons */
 540         }                       /* if(sig == IMAGE_NT_SIGNATURE) */
 541
 542 end:
 543         UnmapViewOfFile(peimage);       /* success */
 544         return ret;
 545 }
 546
 547 /***********************************************************************
 548  *           PrivateExtractIconsW                       [USER32.@]
 549  *
 550  * NOTES
 551  *  If HIWORD(sizeX) && HIWORD(sizeY) 2 * ((nIcons + 1) MOD 2) icons are
 552  *  returned, with the LOWORD size icon first and the HIWORD size icon
 553  *  second.
 554  *  Also the Windows equivalent does extract icons in a strange way if
 555  *  nIndex is negative. Our implementation treats a negative nIndex as
 556  *  looking for that resource identifier for the first icon to retrieve.
 557  *
 558  * FIXME:
 559  *  should also support 16 bit EXE + DLLs, cursor and animated cursor as
 560  *  well as bitmap files.
 561  */
 562
 563 UINT WINAPI PrivateExtractIconsW (
 564         LPCWSTR lpwstrFile,
 565         int nIndex,
 566         int sizeX,
 567         int sizeY,
 568         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 569         UINT* pIconId,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 570         UINT nIcons,    /* [in] number of icons to retrieve */
 571         UINT flags )    /* [in] LR_* flags used by LoadImage */
 572 {
 573         TRACE("%s %d %dx%d %p %p %d 0x%08x\n",
 574               debugstr_w(lpwstrFile), nIndex, sizeX, sizeY, phicon, pIconId, nIcons, flags);
 575
 576         if ((nIcons & 1) && HIWORD(sizeX) && HIWORD(sizeY))
 577         {
 578           WARN("Uneven number %d of icons requested for small and large icons!\n", nIcons);
 579         }
 580         return ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, nIcons, sizeX, sizeY, pIconId, flags);
 581 }
 582
 583 /***********************************************************************
 584  *           PrivateExtractIconsA                       [USER32.@]
 585  */
 586
 587 UINT WINAPI PrivateExtractIconsA (
 588         LPCSTR lpstrFile,
 589         int nIndex,
 590         int sizeX,
 591         int sizeY,
 592         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 593         UINT* piconid,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 594         UINT nIcons,    /* [in] number of icons to retrieve */
 595         UINT flags )    /* [in] LR_* flags used by LoadImage */
 596 {
 597     UINT ret;
 598     INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 599     LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 600
 601     MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 602     ret = PrivateExtractIconsW(lpwstrFile, nIndex, sizeX, sizeY, phicon, piconid, nIcons, flags);
 603
 604     HeapFree(GetProcessHeap(), 0, lpwstrFile);
 605     return ret;
 606 }
 607
 608 /***********************************************************************
 609  *           PrivateExtractIconExW                      [USER32.@]
 610  * NOTES
 611  *  if nIndex == -1 it returns the number of icons in any case !!!
 612  */
 613 UINT WINAPI PrivateExtractIconExW (
 614         LPCWSTR lpwstrFile,
 615         int nIndex,
 616         HICON * phIconLarge,
 617         HICON * phIconSmall,
 618         UINT nIcons )
 619 {
 620         DWORD cyicon, cysmicon, cxicon, cxsmicon;
 621         UINT ret = 0;
 622
 623         TRACE("%s %d %p %p %d\n",
 624         debugstr_w(lpwstrFile),nIndex,phIconLarge, phIconSmall, nIcons);
 625
 626         if (nIndex == -1)
 627           /* get the number of icons */
 628           return ICO_ExtractIconExW(lpwstrFile, NULL, 0, 0, 0, 0, NULL, LR_DEFAULTCOLOR);
 629
 630         if (nIcons == 1 && phIconSmall && phIconLarge)
 631         {
 632           HICON hIcon[2];
 633           cxicon = GetSystemMetrics(SM_CXICON);
 634           cyicon = GetSystemMetrics(SM_CYICON);
 635           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 636           cysmicon = GetSystemMetrics(SM_CYSMICON);
 637
 638           ret = ICO_ExtractIconExW(lpwstrFile, hIcon, nIndex, 2, cxicon | (cxsmicon<<16),
 639                                    cyicon | (cysmicon<<16), NULL, LR_DEFAULTCOLOR);
 640           *phIconLarge = hIcon[0];
 641           *phIconSmall = hIcon[1];
 642           return ret;
 643         }
 644
 645         if (phIconSmall)
 646         {
 647           /* extract n small icons */
 648           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 649           cysmicon = GetSystemMetrics(SM_CYSMICON);
 650           ret = ICO_ExtractIconExW(lpwstrFile, phIconSmall, nIndex, nIcons, cxsmicon,
 651                                    cysmicon, NULL, LR_DEFAULTCOLOR);
 652         }
 653        if (phIconLarge)
 654         {
 655           /* extract n large icons */
 656           cxicon = GetSystemMetrics(SM_CXICON);
 657           cyicon = GetSystemMetrics(SM_CYICON);
 658          ret = ICO_ExtractIconExW(lpwstrFile, phIconLarge, nIndex, nIcons, cxicon,
 659                                    cyicon, NULL, LR_DEFAULTCOLOR);
 660         }
 661         return ret;
 662 }
 663
 664 /***********************************************************************
 665  *           PrivateExtractIconExA                      [USER32.@]
 666  */
 667 UINT WINAPI PrivateExtractIconExA (
 668         LPCSTR lpstrFile,
 669         int nIndex,
 670         HICON * phIconLarge,
 671         HICON * phIconSmall,
 672         UINT nIcons )
 673 {
 674         UINT ret;
 675         INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 676         LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 677
 678         TRACE("%s %d %p %p %d\n", lpstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 679
 680         MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 681         ret = PrivateExtractIconExW(lpwstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 682         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 683         return ret;
 684 }