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 "config.h"
  26
  27 #include <stdarg.h>
  28 #include <string.h>
  29 #include <stdlib.h>     /* abs() */
  30 #include <sys/types.h>
  31 #ifdef HAVE_UNISTD_H
  32 # include <unistd.h>
  33 #endif
  34
  35 #define NONAMELESSUNION
  36 #define NONAMELESSSTRUCT
  37 #include "windef.h"
  38 #include "winbase.h"
  39 #include "wingdi.h"
  40 #include "winuser.h"
  41 #include "winnls.h"
  42 #include "user_private.h"
  43 #include "wine/debug.h"
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(icon);
  46
  47 #include "pshpack1.h"
  48
  49 typedef struct
  50 {
  51     BYTE        bWidth;          /* Width, in pixels, of the image      */
  52     BYTE        bHeight;         /* Height, in pixels, of the image     */
  53     BYTE        bColorCount;     /* Number of colors in image (0 if >=8bpp) */
  54     BYTE        bReserved;       /* Reserved ( must be 0)               */
  55     WORD        wPlanes;         /* Color Planes                        */
  56     WORD        wBitCount;       /* Bits per pixel                      */
  57     DWORD       dwBytesInRes;    /* How many bytes in this resource?    */
  58     DWORD       dwImageOffset;   /* Where in the file is this image?    */
  59 } icoICONDIRENTRY, *LPicoICONDIRENTRY;
  60
  61 typedef struct
  62 {
  63     WORD            idReserved;   /* Reserved (must be 0) */
  64     WORD            idType;       /* Resource Type (RES_ICON or RES_CURSOR) */
  65     WORD            idCount;      /* How many images */
  66     icoICONDIRENTRY idEntries[1]; /* An entry for each image (idCount of 'em) */
  67 } icoICONDIR, *LPicoICONDIR;
  68
  69 typedef struct
  70 {
  71     WORD offset;
  72     WORD length;
  73     WORD flags;
  74     WORD id;
  75     WORD handle;
  76     WORD usage;
  77 } NE_NAMEINFO;
  78
  79 typedef struct
  80 {
  81     WORD  type_id;
  82     WORD  count;
  83     DWORD resloader;
  84 } NE_TYPEINFO;
  85
  86 #define NE_RSCTYPE_ICON        0x8003
  87 #define NE_RSCTYPE_GROUP_ICON  0x800e
  88
  89 #include "poppack.h"
  90
  91 #if 0
  92 static void dumpIcoDirEnty ( LPicoICONDIRENTRY entry )
  93 {
  94         TRACE("width = 0x%08x height = 0x%08x\n", entry->bWidth, entry->bHeight);
  95         TRACE("colors = 0x%08x planes = 0x%08x\n", entry->bColorCount, entry->wPlanes);
  96         TRACE("bitcount = 0x%08x bytesinres = 0x%08lx offset = 0x%08lx\n",
  97         entry->wBitCount, entry->dwBytesInRes, entry->dwImageOffset);
  98 }
  99 static void dumpIcoDir ( LPicoICONDIR entry )
 100 {
 101         TRACE("type = 0x%08x count = 0x%08x\n", entry->idType, entry->idCount);
 102 }
 103 #endif
 104
 105 /**********************************************************************
 106  *  find_entry_by_id
 107  *
 108  * Find an entry by id in a resource directory
 109  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
 110  */
 111 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
 112                                                          WORD id, const void *root )
 113 {
 114     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
 115     int min, max, pos;
 116
 117     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
 118     min = dir->NumberOfNamedEntries;
 119     max = min + dir->NumberOfIdEntries - 1;
 120     while (min <= max)
 121     {
 122         pos = (min + max) / 2;
 123         if (entry[pos].u.Id == id)
 124             return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry[pos].u2.s2.OffsetToDirectory);
 125         if (entry[pos].u.Id > id) max = pos - 1;
 126         else min = pos + 1;
 127     }
 128     return NULL;
 129 }
 130
 131 /**********************************************************************
 132  *  find_entry_default
 133  *
 134  * Find a default entry in a resource directory
 135  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
 136  */
 137 static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
 138                                                            const void *root )
 139 {
 140     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
 141     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
 142     return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry->u2.s2.OffsetToDirectory);
 143 }
 144
 145 /*************************************************************************
 146  *                              USER32_GetResourceTable
 147  */
 148 static DWORD USER32_GetResourceTable(LPBYTE peimage,DWORD pesize,LPBYTE *retptr)
 149 {
 150         IMAGE_DOS_HEADER        * mz_header;
 151
 152         TRACE("%p %p\n", peimage, retptr);
 153
 154         *retptr = NULL;
 155
 156         mz_header = (IMAGE_DOS_HEADER*) peimage;
 157
 158         if (mz_header->e_magic != IMAGE_DOS_SIGNATURE)
 159         {
 160           if (mz_header->e_cblp == 1)   /* .ICO file ? */
 161           {
 162             *retptr = (LPBYTE)-1;       /* ICONHEADER.idType, must be 1 */
 163             return 1;
 164           }
 165           else
 166             return 0; /* failed */
 167         }
 168         if (mz_header->e_lfanew >= pesize) {
 169             return 0; /* failed, happens with PKZIP DOS Exes for instance. */
 170         }
 171         if (*((DWORD*)(peimage + mz_header->e_lfanew)) == IMAGE_NT_SIGNATURE )
 172           return IMAGE_NT_SIGNATURE;
 173
 174         if (*((WORD*)(peimage + mz_header->e_lfanew)) == IMAGE_OS2_SIGNATURE )
 175         {
 176           IMAGE_OS2_HEADER      * ne_header;
 177
 178           ne_header = (IMAGE_OS2_HEADER*)(peimage + mz_header->e_lfanew);
 179
 180           if (ne_header->ne_magic != IMAGE_OS2_SIGNATURE)
 181             return 0;
 182
 183           if( (ne_header->ne_restab - ne_header->ne_rsrctab) <= sizeof(NE_TYPEINFO) )
 184             *retptr = (LPBYTE)-1;
 185           else
 186             *retptr = peimage + mz_header->e_lfanew + ne_header->ne_rsrctab;
 187
 188           return IMAGE_OS2_SIGNATURE;
 189         }
 190         return 0; /* failed */
 191 }
 192 /*************************************************************************
 193  *                      USER32_LoadResource
 194  */
 195 static BYTE * USER32_LoadResource( LPBYTE peimage, NE_NAMEINFO* pNInfo, WORD sizeShift, ULONG *uSize)
 196 {
 197         TRACE("%p %p 0x%08x\n", peimage, pNInfo, sizeShift);
 198
 199         *uSize = (DWORD)pNInfo->length << sizeShift;
 200         return peimage + ((DWORD)pNInfo->offset << sizeShift);
 201 }
 202
 203 /*************************************************************************
 204  *                      ICO_LoadIcon
 205  */
 206 static BYTE * ICO_LoadIcon( LPBYTE peimage, LPicoICONDIRENTRY lpiIDE, ULONG *uSize)
 207 {
 208         TRACE("%p %p\n", peimage, lpiIDE);
 209
 210         *uSize = lpiIDE->dwBytesInRes;
 211         return peimage + lpiIDE->dwImageOffset;
 212 }
 213
 214 /*************************************************************************
 215  *                      ICO_GetIconDirectory
 216  *
 217  * Reads .ico file and build phony ICONDIR struct
 218  */
 219 static BYTE * ICO_GetIconDirectory( LPBYTE peimage, LPicoICONDIR* lplpiID, ULONG *uSize )
 220 {
 221         CURSORICONDIR   * lpcid;        /* icon resource in resource-dir format */
 222         CURSORICONDIR   * lpID;         /* icon resource in resource format */
 223         int             i;
 224
 225         TRACE("%p %p\n", peimage, lplpiID);
 226
 227         lpcid = (CURSORICONDIR*)peimage;
 228
 229         if( lpcid->idReserved || (lpcid->idType != 1) || (!lpcid->idCount) )
 230           return 0;
 231
 232         /* allocate the phony ICONDIR structure */
 233         *uSize = FIELD_OFFSET(CURSORICONDIR, idEntries[lpcid->idCount]);
 234         if( (lpID = HeapAlloc(GetProcessHeap(),0, *uSize) ))
 235         {
 236           /* copy the header */
 237           lpID->idReserved = lpcid->idReserved;
 238           lpID->idType = lpcid->idType;
 239           lpID->idCount = lpcid->idCount;
 240
 241           /* copy the entries */
 242           for( i=0; i < lpcid->idCount; i++ )
 243           {
 244             memcpy(&lpID->idEntries[i], &lpcid->idEntries[i], sizeof(CURSORICONDIRENTRY) - 2);
 245             lpID->idEntries[i].wResId = i;
 246           }
 247
 248           *lplpiID = (LPicoICONDIR)peimage;
 249           return (BYTE *)lpID;
 250         }
 251         return 0;
 252 }
 253
 254 /*************************************************************************
 255  *      ICO_ExtractIconExW              [internal]
 256  *
 257  * NOTES
 258  *  nIcons = 0: returns number of Icons in file
 259  *
 260  * returns
 261  *  invalid file: -1
 262  *  failure:0;
 263  *  success: number of icons in file (nIcons = 0) or nr of icons retrieved
 264  */
 265 static UINT ICO_ExtractIconExW(
 266         LPCWSTR lpszExeFileName,
 267         HICON * RetPtr,
 268         INT nIconIndex,
 269         UINT nIcons,
 270         UINT cxDesired,
 271         UINT cyDesired,
 272         UINT *pIconId,
 273         UINT flags)
 274 {
 275         UINT            ret = 0;
 276         UINT            cx1, cx2, cy1, cy2;
 277         LPBYTE          pData;
 278         DWORD           sig;
 279         HANDLE          hFile;
 280         UINT16          iconDirCount = 0,iconCount = 0;
 281         LPBYTE          peimage;
 282         HANDLE          fmapping;
 283         DWORD           fsizeh,fsizel;
 284         WCHAR           szExePath[MAX_PATH];
 285         DWORD           dwSearchReturn;
 286
 287         TRACE("%s, %d, %d %p 0x%08x\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons, pIconId, flags);
 288
 289         dwSearchReturn = SearchPathW(NULL, lpszExeFileName, NULL, sizeof(szExePath) / sizeof(szExePath[0]), szExePath, NULL);
 290         if ((dwSearchReturn == 0) || (dwSearchReturn > sizeof(szExePath) / sizeof(szExePath[0])))
 291         {
 292             WARN("File %s not found or path too long\n", debugstr_w(lpszExeFileName));
 293             return -1;
 294         }
 295
 296         hFile = CreateFileW(szExePath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
 297         if (hFile == INVALID_HANDLE_VALUE) return ret;
 298         fsizel = GetFileSize(hFile,&fsizeh);
 299
 300         /* Map the file */
 301         fmapping = CreateFileMappingW(hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL);
 302         CloseHandle(hFile);
 303         if (!fmapping)
 304         {
 305           WARN("CreateFileMapping error %d\n", GetLastError() );
 306           return 0xFFFFFFFF;
 307         }
 308
 309         if (!(peimage = MapViewOfFile(fmapping, FILE_MAP_READ, 0, 0, 0)))
 310         {
 311           WARN("MapViewOfFile error %d\n", GetLastError() );
 312           CloseHandle(fmapping);
 313           return 0xFFFFFFFF;
 314         }
 315         CloseHandle(fmapping);
 316
 317         cx1 = LOWORD(cxDesired);
 318         cx2 = HIWORD(cxDesired);
 319         cy1 = LOWORD(cyDesired);
 320         cy2 = HIWORD(cyDesired);
 321
 322         if (pIconId) /* Invalidate first icon identifier */
 323                 *pIconId = 0xFFFFFFFF;
 324
 325         if (!pIconId) /* if no icon identifier array present use the icon handle array as intermediate storage */
 326           pIconId = (UINT*)RetPtr;
 327
 328         sig = USER32_GetResourceTable(peimage, fsizel, &pData);
 329
 330 /* ico file or NE exe/dll*/
 331         if (sig==IMAGE_OS2_SIGNATURE || sig==1) /* .ICO file */
 332         {
 333           BYTE          *pCIDir = 0;
 334           NE_TYPEINFO   *pTInfo = (NE_TYPEINFO*)(pData + 2);
 335           NE_NAMEINFO   *pIconStorage = NULL;
 336           NE_NAMEINFO   *pIconDir = NULL;
 337           LPicoICONDIR  lpiID = NULL;
 338           ULONG         uSize = 0;
 339
 340           TRACE("-- OS2/icon Signature (0x%08x)\n", sig);
 341
 342           if (pData == (BYTE*)-1)
 343           {
 344             pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize);     /* check for .ICO file */
 345             if (pCIDir)
 346             {
 347               iconDirCount = 1; iconCount = lpiID->idCount;
 348               TRACE("-- icon found %p 0x%08x 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
 349             }
 350           }
 351           else while (pTInfo->type_id && !(pIconStorage && pIconDir))
 352           {
 353             if (pTInfo->type_id == NE_RSCTYPE_GROUP_ICON)       /* find icon directory and icon repository */
 354             {
 355               iconDirCount = pTInfo->count;
 356               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 357               TRACE("\tfound directory - %i icon families\n", iconDirCount);
 358             }
 359             if (pTInfo->type_id == NE_RSCTYPE_ICON)
 360             {
 361               iconCount = pTInfo->count;
 362               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 363               TRACE("\ttotal icons - %i\n", iconCount);
 364             }
 365             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 366           }
 367
 368           if ((pIconStorage && pIconDir) || lpiID)        /* load resources and create icons */
 369           {
 370             if (nIcons == 0)
 371             {
 372               ret = iconDirCount;
 373               if (lpiID)        /* *.ico file, deallocate heap pointer*/
 374                 HeapFree(GetProcessHeap(), 0, pCIDir);
 375             }
 376             else if (nIconIndex < iconDirCount)
 377             {
 378               UINT16   i, icon;
 379               if (nIcons > iconDirCount - nIconIndex)
 380                 nIcons = iconDirCount - nIconIndex;
 381
 382               for (i = 0; i < nIcons; i++)
 383               {
 384                 /* .ICO files have only one icon directory */
 385                 if (lpiID == NULL)      /* not *.ico */
 386                   pCIDir = USER32_LoadResource(peimage, pIconDir + i + nIconIndex, *(WORD*)pData, &uSize);
 387                 pIconId[i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE, cx1, cy1, flags);
 388                 if (cx2 && cy2) pIconId[++i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE,  cx2, cy2, flags);
 389               }
 390               if (lpiID)        /* *.ico file, deallocate heap pointer*/
 391                 HeapFree(GetProcessHeap(), 0, pCIDir);
 392
 393               for (icon = 0; icon < nIcons; icon++)
 394               {
 395                 pCIDir = NULL;
 396                 if (lpiID)
 397                   pCIDir = ICO_LoadIcon(peimage, lpiID->idEntries + (int)pIconId[icon], &uSize);
 398                 else
 399                   for (i = 0; i < iconCount; i++)
 400                     if (pIconStorage[i].id == ((int)pIconId[icon] | 0x8000) )
 401                       pCIDir = USER32_LoadResource(peimage, pIconStorage + i, *(WORD*)pData, &uSize);
 402
 403                 if (pCIDir)
 404                 {
 405                   RetPtr[icon] = CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
 406                                                                  cx1, cy1, flags);
 407                   if (cx2 && cy2)
 408                       RetPtr[++icon] = CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
 409                                                                        cx2, cy2, flags);
 410                 }
 411                 else
 412                   RetPtr[icon] = 0;
 413               }
 414               ret = icon;       /* return number of retrieved icons */
 415             }
 416           }
 417         }
 418 /* end ico file */
 419
 420 /* exe/dll */
 421         else if( sig == IMAGE_NT_SIGNATURE )
 422         {
 423         BYTE *idata, *igdata;
 424         const IMAGE_RESOURCE_DIRECTORY *rootresdir, *iconresdir, *icongroupresdir;
 425         const IMAGE_RESOURCE_DATA_ENTRY *idataent, *igdataent;
 426         const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
 427         ULONG size;
 428         UINT i;
 429
 430         rootresdir = RtlImageDirectoryEntryToData((HMODULE)peimage, FALSE, IMAGE_DIRECTORY_ENTRY_RESOURCE, &size);
 431         if (!rootresdir)
 432         {
 433             WARN("haven't found section for resource directory.\n");
 434             goto end;
 435         }
 436
 437           /* search for the group icon directory */
 438           if (!(icongroupresdir = find_entry_by_id(rootresdir, LOWORD(RT_GROUP_ICON), rootresdir)))
 439           {
 440             WARN("No Icongroupresourcedirectory!\n");
 441             goto end;           /* failure */
 442           }
 443           iconDirCount = icongroupresdir->NumberOfNamedEntries + icongroupresdir->NumberOfIdEntries;
 444
 445           /* only number of icons requested */
 446           if( !pIconId )
 447           {
 448             ret = iconDirCount;
 449             goto end;           /* success */
 450           }
 451
 452           if( nIconIndex < 0 )
 453           {
 454             /* search resource id */
 455             int n = 0;
 456             int iId = abs(nIconIndex);
 457             const IMAGE_RESOURCE_DIRECTORY_ENTRY* xprdeTmp = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1);
 458
 459             while(n<iconDirCount && xprdeTmp)
 460             {
 461               if(xprdeTmp->u.Id ==  iId)
 462               {
 463                   nIconIndex = n;
 464                   break;
 465               }
 466               n++;
 467               xprdeTmp++;
 468             }
 469             if (nIconIndex < 0)
 470             {
 471               WARN("resource id %d not found\n", iId);
 472               goto end;         /* failure */
 473             }
 474           }
 475           else
 476           {
 477             /* check nIconIndex to be in range */
 478             if (nIconIndex >= iconDirCount)
 479             {
 480               WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 481               goto end;         /* failure */
 482             }
 483           }
 484
 485           /* assure we don't get too much */
 486           if( nIcons > iconDirCount - nIconIndex )
 487             nIcons = iconDirCount - nIconIndex;
 488
 489           /* starting from specified index */
 490           xresent = (const IMAGE_RESOURCE_DIRECTORY_ENTRY*)(icongroupresdir+1) + nIconIndex;
 491
 492           for (i=0; i < nIcons; i++,xresent++)
 493           {
 494             const IMAGE_RESOURCE_DIRECTORY *resdir;
 495
 496             /* go down this resource entry, name */
 497             resdir = (const IMAGE_RESOURCE_DIRECTORY *)((const char *)rootresdir + xresent->u2.s2.OffsetToDirectory);
 498
 499             /* default language (0) */
 500             resdir = find_entry_default(resdir,rootresdir);
 501             igdataent = (const IMAGE_RESOURCE_DATA_ENTRY*)resdir;
 502
 503             /* lookup address in mapped image for virtual address */
 504         igdata = RtlImageRvaToVa(RtlImageNtHeader((HMODULE)peimage), (HMODULE)peimage, igdataent->OffsetToData, NULL);
 505         if (!igdata)
 506             {
 507               FIXME("no matching real address for icongroup!\n");
 508               goto end; /* failure */
 509             }
 510             pIconId[i] = LookupIconIdFromDirectoryEx(igdata, TRUE, cx1, cy1, flags);
 511             if (cx2 && cy2) pIconId[++i] = LookupIconIdFromDirectoryEx(igdata, TRUE, cx2, cy2, flags);
 512           }
 513
 514           if (!(iconresdir=find_entry_by_id(rootresdir,LOWORD(RT_ICON),rootresdir)))
 515           {
 516             WARN("No Iconresourcedirectory!\n");
 517             goto end;           /* failure */
 518           }
 519
 520           for (i=0; i<nIcons; i++)
 521           {
 522             const IMAGE_RESOURCE_DIRECTORY *xresdir;
 523             xresdir = find_entry_by_id(iconresdir, LOWORD(pIconId[i]), rootresdir);
 524             if( !xresdir )
 525             {
 526               WARN("icon entry %d not found\n", LOWORD(pIconId[i]));
 527               RetPtr[i]=0;
 528               continue;
 529             }
 530             xresdir = find_entry_default(xresdir, rootresdir);
 531             idataent = (const IMAGE_RESOURCE_DATA_ENTRY*)xresdir;
 532
 533         idata = RtlImageRvaToVa(RtlImageNtHeader((HMODULE)peimage), (HMODULE)peimage, idataent->OffsetToData, NULL);
 534         if (!idata)
 535             {
 536               WARN("no matching real address found for icondata!\n");
 537               RetPtr[i]=0;
 538               continue;
 539             }
 540             RetPtr[i] = CreateIconFromResourceEx(idata, idataent->Size, TRUE, 0x00030000, cx1, cy1, flags);
 541             if (cx2 && cy2)
 542                 RetPtr[++i] = CreateIconFromResourceEx(idata, idataent->Size, TRUE, 0x00030000, cx2, cy2, flags);
 543           }
 544           ret = i;      /* return number of retrieved icons */
 545         }                       /* if(sig == IMAGE_NT_SIGNATURE) */
 546
 547 end:
 548         UnmapViewOfFile(peimage);       /* success */
 549         return ret;
 550 }
 551
 552 /***********************************************************************
 553  *           PrivateExtractIconsW                       [USER32.@]
 554  *
 555  * NOTES
 556  *  If HIWORD(sizeX) && HIWORD(sizeY) 2 * ((nIcons + 1) MOD 2) icons are
 557  *  returned, with the LOWORD size icon first and the HIWORD size icon
 558  *  second.
 559  *  Also the Windows equivalent does extract icons in a strange way if
 560  *  nIndex is negative. Our implementation treats a negative nIndex as
 561  *  looking for that resource identifier for the first icon to retrieve.
 562  *
 563  * FIXME:
 564  *  should also support 16 bit EXE + DLLs, cursor and animated cursor as
 565  *  well as bitmap files.
 566  */
 567
 568 UINT WINAPI PrivateExtractIconsW (
 569         LPCWSTR lpwstrFile,
 570         int nIndex,
 571         int sizeX,
 572         int sizeY,
 573         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 574         UINT* pIconId,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 575         UINT nIcons,    /* [in] number of icons to retrieve */
 576         UINT flags )    /* [in] LR_* flags used by LoadImage */
 577 {
 578         TRACE("%s %d %dx%d %p %p %d 0x%08x\n",
 579               debugstr_w(lpwstrFile), nIndex, sizeX, sizeY, phicon, pIconId, nIcons, flags);
 580
 581         if ((nIcons & 1) && HIWORD(sizeX) && HIWORD(sizeY))
 582         {
 583           WARN("Uneven number %d of icons requested for small and large icons!\n", nIcons);
 584         }
 585         return ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, nIcons, sizeX, sizeY, pIconId, flags);
 586 }
 587
 588 /***********************************************************************
 589  *           PrivateExtractIconsA                       [USER32.@]
 590  */
 591
 592 UINT WINAPI PrivateExtractIconsA (
 593         LPCSTR lpstrFile,
 594         int nIndex,
 595         int sizeX,
 596         int sizeY,
 597         HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
 598         UINT* piconid,  /* [out] pointer to array of nIcons icon identifiers or NULL */
 599         UINT nIcons,    /* [in] number of icons to retrieve */
 600         UINT flags )    /* [in] LR_* flags used by LoadImage */
 601 {
 602     UINT ret;
 603     INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 604     LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 605
 606     MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 607     ret = PrivateExtractIconsW(lpwstrFile, nIndex, sizeX, sizeY, phicon, piconid, nIcons, flags);
 608
 609     HeapFree(GetProcessHeap(), 0, lpwstrFile);
 610     return ret;
 611 }
 612
 613 /***********************************************************************
 614  *           PrivateExtractIconExW                      [USER32.@]
 615  * NOTES
 616  *  if nIndex == -1 it returns the number of icons in any case !!!
 617  */
 618 UINT WINAPI PrivateExtractIconExW (
 619         LPCWSTR lpwstrFile,
 620         int nIndex,
 621         HICON * phIconLarge,
 622         HICON * phIconSmall,
 623         UINT nIcons )
 624 {
 625         DWORD cyicon, cysmicon, cxicon, cxsmicon;
 626         UINT ret = 0;
 627
 628         TRACE("%s %d %p %p %d\n",
 629         debugstr_w(lpwstrFile),nIndex,phIconLarge, phIconSmall, nIcons);
 630
 631         if (nIndex == -1)
 632           /* get the number of icons */
 633           return ICO_ExtractIconExW(lpwstrFile, NULL, 0, 0, 0, 0, NULL, LR_DEFAULTCOLOR);
 634
 635         if (nIcons == 1 && phIconSmall && phIconLarge)
 636         {
 637           HICON hIcon[2];
 638           cxicon = GetSystemMetrics(SM_CXICON);
 639           cyicon = GetSystemMetrics(SM_CYICON);
 640           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 641           cysmicon = GetSystemMetrics(SM_CYSMICON);
 642
 643           ret = ICO_ExtractIconExW(lpwstrFile, hIcon, nIndex, 2, cxicon | (cxsmicon<<16),
 644                                    cyicon | (cysmicon<<16), NULL, LR_DEFAULTCOLOR);
 645           *phIconLarge = hIcon[0];
 646           *phIconSmall = hIcon[1];
 647           return ret;
 648         }
 649
 650         if (phIconSmall)
 651         {
 652           /* extract n small icons */
 653           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 654           cysmicon = GetSystemMetrics(SM_CYSMICON);
 655           ret = ICO_ExtractIconExW(lpwstrFile, phIconSmall, nIndex, nIcons, cxsmicon,
 656                                    cysmicon, NULL, LR_DEFAULTCOLOR);
 657         }
 658        if (phIconLarge)
 659         {
 660           /* extract n large icons */
 661           cxicon = GetSystemMetrics(SM_CXICON);
 662           cyicon = GetSystemMetrics(SM_CYICON);
 663          ret = ICO_ExtractIconExW(lpwstrFile, phIconLarge, nIndex, nIcons, cxicon,
 664                                    cyicon, NULL, LR_DEFAULTCOLOR);
 665         }
 666         return ret;
 667 }
 668
 669 /***********************************************************************
 670  *           PrivateExtractIconExA                      [USER32.@]
 671  */
 672 UINT WINAPI PrivateExtractIconExA (
 673         LPCSTR lpstrFile,
 674         int nIndex,
 675         HICON * phIconLarge,
 676         HICON * phIconSmall,
 677         UINT nIcons )
 678 {
 679         UINT ret;
 680         INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
 681         LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 682
 683         TRACE("%s %d %p %p %d\n", lpstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 684
 685         MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
 686         ret = PrivateExtractIconExW(lpwstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 687         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 688         return ret;
 689 }