dlls/user/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 #include <string.h>
   9 #include <stdlib.h>     /* abs() */
  10 #include <sys/types.h>
  11 #include <unistd.h>
  12 #include "config.h"
  13 #include "winbase.h"
  14 #include "windef.h"
  15 #include "winerror.h"
  16 #include "wingdi.h"
  17 #include "winuser.h"
  18 #include "wine/winbase16.h"
  19 #include "cursoricon.h"
  20 #include "heap.h"
  21 #include "debugtools.h"
  22
  23 DEFAULT_DEBUG_CHANNEL(icon);
  24
  25 #include "pshpack1.h"
  26
  27 typedef struct
  28 {
  29     BYTE        bWidth;          /* Width, in pixels, of the image      */
  30     BYTE        bHeight;         /* Height, in pixels, of the image     */
  31     BYTE        bColorCount;     /* Number of colors in image (0 if >=8bpp) */
  32     BYTE        bReserved;       /* Reserved ( must be 0)               */
  33     WORD        wPlanes;         /* Color Planes                        */
  34     WORD        wBitCount;       /* Bits per pixel                      */
  35     DWORD       dwBytesInRes;    /* How many bytes in this resource?    */
  36     DWORD       dwImageOffset;   /* Where in the file is this image?    */
  37 } icoICONDIRENTRY, *LPicoICONDIRENTRY;
  38
  39 typedef struct
  40 {
  41     WORD            idReserved;   /* Reserved (must be 0) */
  42     WORD            idType;       /* Resource Type (RES_ICON or RES_CURSOR) */
  43     WORD            idCount;      /* How many images */
  44     icoICONDIRENTRY idEntries[1]; /* An entry for each image (idCount of 'em) */
  45 } icoICONDIR, *LPicoICONDIR;
  46
  47 #include "poppack.h"
  48
  49 #if 0
  50 static void dumpIcoDirEnty ( LPicoICONDIRENTRY entry )
  51 {
  52         TRACE("width = 0x%08x height = 0x%08x\n", entry->bWidth, entry->bHeight);
  53         TRACE("colors = 0x%08x planes = 0x%08x\n", entry->bColorCount, entry->wPlanes);
  54         TRACE("bitcount = 0x%08x bytesinres = 0x%08lx offset = 0x%08lx\n",
  55         entry->wBitCount, entry->dwBytesInRes, entry->dwImageOffset);
  56 }
  57 static void dumpIcoDir ( LPicoICONDIR entry )
  58 {
  59         TRACE("type = 0x%08x count = 0x%08x\n", entry->idType, entry->idCount);
  60 }
  61 #endif
  62
  63 /**********************************************************************
  64  *  find_entry_by_id
  65  *
  66  * Find an entry by id in a resource directory
  67  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
  68  */
  69 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
  70                                                          WORD id, const void *root )
  71 {
  72     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
  73     int min, max, pos;
  74
  75     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
  76     min = dir->NumberOfNamedEntries;
  77     max = min + dir->NumberOfIdEntries - 1;
  78     while (min <= max)
  79     {
  80         pos = (min + max) / 2;
  81         if (entry[pos].u1.s2.Id == id)
  82             return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
  83         if (entry[pos].u1.s2.Id > id) max = pos - 1;
  84         else min = pos + 1;
  85     }
  86     return NULL;
  87 }
  88
  89 /**********************************************************************
  90  *  find_entry_default
  91  *
  92  * Find a default entry in a resource directory
  93  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
  94  */
  95 static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
  96                                                            const void *root )
  97 {
  98     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
  99     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
 100     return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry->u2.s3.OffsetToDirectory);
 101 }
 102
 103 /*************************************************************************
 104  *                              USER32_GetResourceTable
 105  */
 106 static DWORD USER32_GetResourceTable(LPBYTE peimage,DWORD pesize,LPBYTE *retptr)
 107 {
 108         IMAGE_DOS_HEADER        * mz_header;
 109
 110         TRACE("%p %p\n", peimage, retptr);
 111
 112         *retptr = NULL;
 113
 114         mz_header = (IMAGE_DOS_HEADER*) peimage;
 115
 116         if (mz_header->e_magic != IMAGE_DOS_SIGNATURE)
 117         {
 118           if (mz_header->e_cblp == 1)   /* .ICO file ? */
 119           {
 120             *retptr = (LPBYTE)-1;       /* ICONHEADER.idType, must be 1 */
 121             return 1;
 122           }
 123           else
 124             return 0; /* failed */
 125         }
 126         if (mz_header->e_lfanew >= pesize) {
 127             return 0; /* failed, happens with PKZIP DOS Exes for instance. */
 128         }
 129         if (*((DWORD*)(peimage + mz_header->e_lfanew)) == IMAGE_NT_SIGNATURE )
 130           return IMAGE_NT_SIGNATURE;
 131
 132         if (*((WORD*)(peimage + mz_header->e_lfanew)) == IMAGE_OS2_SIGNATURE )
 133         {
 134           IMAGE_OS2_HEADER      * ne_header;
 135
 136           ne_header = (IMAGE_OS2_HEADER*)(peimage + mz_header->e_lfanew);
 137
 138           if (ne_header->ne_magic != IMAGE_OS2_SIGNATURE)
 139             return 0;
 140
 141           if( (ne_header->ne_restab - ne_header->ne_rsrctab) <= sizeof(NE_TYPEINFO) )
 142             *retptr = (LPBYTE)-1;
 143           else
 144             *retptr = peimage + mz_header->e_lfanew + ne_header->ne_rsrctab;
 145
 146           return IMAGE_OS2_SIGNATURE;
 147         }
 148         return 0; /* failed */
 149 }
 150 /*************************************************************************
 151  *                      USER32_LoadResource
 152  */
 153 static BYTE * USER32_LoadResource( LPBYTE peimage, NE_NAMEINFO* pNInfo, WORD sizeShift, ULONG *uSize)
 154 {
 155         TRACE("%p %p 0x%08x\n", peimage, pNInfo, sizeShift);
 156
 157         *uSize = (DWORD)pNInfo->length << sizeShift;
 158         return peimage + ((DWORD)pNInfo->offset << sizeShift);
 159 }
 160
 161 /*************************************************************************
 162  *                      ICO_LoadIcon
 163  */
 164 static BYTE * ICO_LoadIcon( LPBYTE peimage, LPicoICONDIRENTRY lpiIDE, ULONG *uSize)
 165 {
 166         TRACE("%p %p\n", peimage, lpiIDE);
 167
 168         *uSize = lpiIDE->dwBytesInRes;
 169         return peimage + lpiIDE->dwImageOffset;
 170 }
 171
 172 /*************************************************************************
 173  *                      ICO_GetIconDirectory
 174  *
 175  * Reads .ico file and build phony ICONDIR struct
 176  * see http://www.microsoft.com/win32dev/ui/icons.htm
 177  */
 178 #define HEADER_SIZE             (sizeof(CURSORICONDIR) - sizeof (CURSORICONDIRENTRY))
 179 #define HEADER_SIZE_FILE        (sizeof(icoICONDIR) - sizeof (icoICONDIRENTRY))
 180
 181 static BYTE * ICO_GetIconDirectory( LPBYTE peimage, LPicoICONDIR* lplpiID, ULONG *uSize )
 182 {
 183         CURSORICONDIR   * lpcid;        /* icon resource in resource-dir format */
 184         CURSORICONDIR   * lpID;         /* icon resource in resource format */
 185         int             i;
 186
 187         TRACE("%p %p\n", peimage, lplpiID);
 188
 189         lpcid = (CURSORICONDIR*)peimage;
 190
 191         if( lpcid->idReserved || (lpcid->idType != 1) || (!lpcid->idCount) )
 192           return 0;
 193
 194         /* allocate the phony ICONDIR structure */
 195         *uSize = lpcid->idCount * sizeof(CURSORICONDIRENTRY) + HEADER_SIZE;
 196         if( (lpID = (CURSORICONDIR*)HeapAlloc(GetProcessHeap(),0, *uSize) ))
 197         {
 198           /* copy the header */
 199           lpID->idReserved = lpcid->idReserved;
 200           lpID->idType = lpcid->idType;
 201           lpID->idCount = lpcid->idCount;
 202
 203           /* copy the entrys */
 204           for( i=0; i < lpcid->idCount; i++ )
 205           {
 206             memcpy((void*)&(lpID->idEntries[i]),(void*)&(lpcid->idEntries[i]), sizeof(CURSORICONDIRENTRY) - 2);
 207             lpID->idEntries[i].wResId = i;
 208           }
 209
 210           *lplpiID = (LPicoICONDIR)peimage;
 211           return (BYTE *)lpID;
 212         }
 213         return 0;
 214 }
 215
 216 /*************************************************************************
 217  *      ICO_ExtractIconExW              [internal]
 218  *
 219  * NOTES
 220  *  nIcons = 0: returns number of Icons in file
 221  *
 222  * returns
 223  *  failure:0; success: icon handle or nr of icons (nIconIndex-1)
 224  */
 225 static HRESULT ICO_ExtractIconExW(
 226         LPCWSTR lpszExeFileName,
 227         HICON * RetPtr,
 228         INT nIconIndex,
 229         UINT nIcons,
 230         UINT cxDesired,
 231         UINT cyDesired )
 232 {
 233         HGLOBAL         hRet = E_FAIL;
 234         LPBYTE          pData;
 235         DWORD           sig;
 236         HFILE           hFile;
 237         UINT16          iconDirCount = 0,iconCount = 0;
 238         LPBYTE          peimage;
 239         HANDLE          fmapping;
 240         ULONG           uSize;
 241         DWORD           fsizeh,fsizel;
 242
 243         TRACE("(file %s,start %d,extract %d\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons);
 244
 245         hFile = CreateFileW( lpszExeFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0 );
 246         if (hFile == INVALID_HANDLE_VALUE) return hRet;
 247         fsizel = GetFileSize(hFile,&fsizeh);
 248
 249         /* Map the file */
 250         fmapping = CreateFileMappingA( hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL );
 251         CloseHandle( hFile );
 252         if (!fmapping)
 253         {
 254           WARN("CreateFileMapping error %ld\n", GetLastError() );
 255           return hRet;
 256         }
 257
 258         if ( !(peimage = MapViewOfFile(fmapping,FILE_MAP_READ,0,0,0)))
 259         {
 260           WARN("MapViewOfFile error %ld\n", GetLastError() );
 261           CloseHandle( fmapping );
 262           return hRet;
 263         }
 264         CloseHandle( fmapping );
 265
 266         sig = USER32_GetResourceTable(peimage,fsizel,&pData);
 267
 268 /* ico file */
 269         if( sig==IMAGE_OS2_SIGNATURE || sig==1 ) /* .ICO file */
 270         {
 271           BYTE          *pCIDir = 0;
 272           NE_TYPEINFO   *pTInfo = (NE_TYPEINFO*)(pData + 2);
 273           NE_NAMEINFO   *pIconStorage = NULL;
 274           NE_NAMEINFO   *pIconDir = NULL;
 275           LPicoICONDIR  lpiID = NULL;
 276
 277           TRACE("-- OS2/icon Signature (0x%08lx)\n", sig);
 278
 279           if( pData == (BYTE*)-1 )
 280           {
 281             /* FIXME: pCIDir is allocated on the heap - memory leak */
 282             pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize);     /* check for .ICO file */
 283             if( pCIDir )
 284             {
 285               iconDirCount = 1; iconCount = lpiID->idCount;
 286               TRACE("-- icon found %p 0x%08lx 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
 287             }
 288           }
 289           else while( pTInfo->type_id && !(pIconStorage && pIconDir) )
 290           {
 291             if( pTInfo->type_id == NE_RSCTYPE_GROUP_ICON )      /* find icon directory and icon repository */
 292             {
 293               iconDirCount = pTInfo->count;
 294               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 295               TRACE("\tfound directory - %i icon families\n", iconDirCount);
 296             }
 297             if( pTInfo->type_id == NE_RSCTYPE_ICON )
 298             {
 299               iconCount = pTInfo->count;
 300               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 301               TRACE("\ttotal icons - %i\n", iconCount);
 302             }
 303             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 304           }
 305
 306           if( (pIconStorage && pIconDir) || lpiID )       /* load resources and create icons */
 307           {
 308             if( nIcons == 0 )
 309             {
 310               hRet = iconDirCount;
 311             }
 312             else if( nIconIndex < iconDirCount )
 313             {
 314               UINT16   i, icon;
 315               if( nIcons > iconDirCount - nIconIndex )
 316                 nIcons = iconDirCount - nIconIndex;
 317
 318               for( i = nIconIndex; i < nIconIndex + nIcons; i++ )
 319               {
 320                 /* .ICO files have only one icon directory */
 321                 if( lpiID == NULL )     /* *.ico */
 322                   pCIDir = USER32_LoadResource( peimage, pIconDir + i, *(WORD*)pData, &uSize );
 323                 RetPtr[i-nIconIndex] = LookupIconIdFromDirectoryEx( pCIDir, TRUE, cxDesired, cyDesired, 0);
 324               }
 325
 326               for( icon = nIconIndex; icon < nIconIndex + nIcons; icon++ )
 327               {
 328                 pCIDir = NULL;
 329                 if( lpiID )
 330                   pCIDir = ICO_LoadIcon( peimage, lpiID->idEntries + RetPtr[icon-nIconIndex], &uSize);
 331                 else
 332                   for( i = 0; i < iconCount; i++ )
 333                     if( pIconStorage[i].id == (RetPtr[icon-nIconIndex] | 0x8000) )
 334                       pCIDir = USER32_LoadResource( peimage, pIconStorage + i,*(WORD*)pData, &uSize );
 335
 336                 if( pCIDir )
 337                   RetPtr[icon-nIconIndex] = (HICON) CreateIconFromResourceEx(pCIDir,uSize,TRUE,0x00030000, cxDesired, cyDesired, LR_DEFAULTCOLOR);
 338                 else
 339                   RetPtr[icon-nIconIndex] = 0;
 340               }
 341               hRet = S_OK;
 342             }
 343           }
 344         }
 345 /* end ico file */
 346
 347 /* exe/dll */
 348         else if( sig == IMAGE_NT_SIGNATURE )
 349         {
 350           LPBYTE                idata,igdata;
 351           PIMAGE_DOS_HEADER     dheader;
 352           PIMAGE_NT_HEADERS     pe_header;
 353           PIMAGE_SECTION_HEADER pe_sections;
 354           const IMAGE_RESOURCE_DIRECTORY *rootresdir,*iconresdir,*icongroupresdir;
 355           const IMAGE_RESOURCE_DATA_ENTRY *idataent,*igdataent;
 356           const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
 357           int                   i,j;
 358
 359           dheader = (PIMAGE_DOS_HEADER)peimage;
 360           pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew);     /* it is a pe header, USER32_GetResourceTable checked that */
 361           pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header)+sizeof(*pe_header)); /* probably makes problems with short PE headers...*/
 362           rootresdir = NULL;
 363
 364           /* search for the root resource directory */
 365           for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
 366           {
 367             if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 368               continue;
 369             if (fsizel < pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData) {
 370               FIXME("File %s too short (section is at %ld bytes, real size is %ld)\n",
 371                       debugstr_w(lpszExeFileName),
 372                       pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData,
 373                       fsizel
 374               );
 375               goto end;
 376             }
 377             /* FIXME: doesn't work when the resources are not in a seperate section */
 378             if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
 379             {
 380               rootresdir = (PIMAGE_RESOURCE_DIRECTORY)(peimage+pe_sections[i].PointerToRawData);
 381               break;
 382             }
 383           }
 384
 385           if (!rootresdir)
 386           {
 387             WARN("haven't found section for resource directory.\n");
 388             goto end;           /* failure */
 389           }
 390
 391           /* search for the group icon directory */
 392           if (!(icongroupresdir = find_entry_by_id(rootresdir, LOWORD(RT_GROUP_ICONW), rootresdir)))
 393           {
 394             WARN("No Icongroupresourcedirectory!\n");
 395             goto end;           /* failure */
 396           }
 397           iconDirCount = icongroupresdir->NumberOfNamedEntries + icongroupresdir->NumberOfIdEntries;
 398
 399           /* only number of icons requested */
 400           if( nIcons == 0 )
 401           {
 402             hRet = iconDirCount;
 403             goto end;           /* success */
 404           }
 405
 406           if( nIconIndex < 0 )
 407           {
 408             /* search resource id */
 409             int n = 0;
 410             int iId = abs(nIconIndex);
 411             PIMAGE_RESOURCE_DIRECTORY_ENTRY xprdeTmp = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1);
 412
 413             while(n<iconDirCount && xprdeTmp)
 414             {
 415               if(xprdeTmp->u1.s2.Id ==  iId)
 416               {
 417                   nIconIndex = n;
 418                   break;
 419               }
 420               n++;
 421               xprdeTmp++;
 422             }
 423             if (nIconIndex < 0)
 424             {
 425               WARN("resource id %d not found\n", iId);
 426               goto end;         /* failure */
 427             }
 428           }
 429           else
 430           {
 431             /* check nIconIndex to be in range */
 432             if (nIconIndex >= iconDirCount)
 433             {
 434               WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 435               goto end;         /* failure */
 436             }
 437           }
 438
 439           /* assure we don't get too much */
 440           if( nIcons > iconDirCount - nIconIndex )
 441             nIcons = iconDirCount - nIconIndex;
 442
 443           /* starting from specified index */
 444           xresent = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1) + nIconIndex;
 445
 446           for (i=0; i < nIcons; i++,xresent++)
 447           {
 448               const IMAGE_RESOURCE_DIRECTORY *resdir;
 449
 450             /* go down this resource entry, name */
 451             resdir = (PIMAGE_RESOURCE_DIRECTORY)((DWORD)rootresdir+(xresent->u2.s3.OffsetToDirectory));
 452
 453             /* default language (0) */
 454             resdir = find_entry_default(resdir,rootresdir);
 455             igdataent = (PIMAGE_RESOURCE_DATA_ENTRY)resdir;
 456
 457             /* lookup address in mapped image for virtual address */
 458             igdata = NULL;
 459
 460             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 461             {
 462               if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
 463                 continue;
 464               if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 465                 continue;
 466
 467               if (igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData+igdataent->Size > fsizel) {
 468                   FIXME("overflow in PE lookup (%s has len %ld, have offset %ld), short file?\n",debugstr_w(lpszExeFileName),fsizel,igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData+igdataent->Size);
 469                   goto end; /* failure */
 470               }
 471               igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 472             }
 473
 474             if (!igdata)
 475             {
 476               FIXME("no matching real address for icongroup!\n");
 477               goto end; /* failure */
 478             }
 479             RetPtr[i] = (HICON)LookupIconIdFromDirectoryEx(igdata, TRUE, cxDesired, cyDesired, LR_DEFAULTCOLOR);
 480           }
 481
 482           if (!(iconresdir=find_entry_by_id(rootresdir,LOWORD(RT_ICONW),rootresdir)))
 483           {
 484             WARN("No Iconresourcedirectory!\n");
 485             goto end;           /* failure */
 486           }
 487
 488           for (i=0; i<nIcons; i++)
 489           {
 490               const IMAGE_RESOURCE_DIRECTORY *xresdir;
 491               xresdir = find_entry_by_id(iconresdir,RetPtr[i],rootresdir);
 492               xresdir = find_entry_default(xresdir,rootresdir);
 493             idataent = (PIMAGE_RESOURCE_DATA_ENTRY)xresdir;
 494             idata = NULL;
 495
 496             /* map virtual to address in image */
 497             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 498             {
 499               if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
 500                 continue;
 501               if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 502                 continue;
 503               idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 504             }
 505             if (!idata)
 506             {
 507               WARN("no matching real address found for icondata!\n");
 508               RetPtr[i]=0;
 509               continue;
 510             }
 511             RetPtr[i] = (HICON) CreateIconFromResourceEx(idata,idataent->Size,TRUE,0x00030000, cxDesired, cyDesired, LR_DEFAULTCOLOR);
 512           }
 513           hRet = S_OK;  /* return first icon */
 514         }                       /* if(sig == IMAGE_NT_SIGNATURE) */
 515
 516 end:    UnmapViewOfFile(peimage);       /* success */
 517         return hRet;
 518 }
 519
 520 /***********************************************************************
 521  *           PrivateExtractIconsW                       [USER32.@]
 522  *
 523  * NOTES
 524  *  nIndex = 1: a small and a large icon are extracted.
 525  *  the higher word of sizeXY contains the size of the small icon, the lower
 526  *  word the size of the big icon. phicon points to HICON[2].
 527  *
 528  * RETURNS
 529  *  nIcons > 0: HRESULT
 530  *  nIcons = 0: the number of icons
 531  */
 532
 533 HRESULT WINAPI PrivateExtractIconsW (
 534         LPCWSTR lpwstrFile,
 535         int nIndex,
 536         DWORD sizeX,
 537         DWORD sizeY,
 538         HICON * phicon, /* [???] NOTE: HICON* */
 539         DWORD w,        /* [in] NOTE: 0 */
 540         UINT nIcons,
 541         DWORD y )       /* [in] NOTE: 0x80 maybe LR_* constant */
 542 {
 543         DWORD ret;
 544         TRACE("%s 0x%08x 0x%08lx 0x%08lx %p 0x%08lx 0x%08x 0x%08lx\n",
 545         debugstr_w(lpwstrFile),nIndex, sizeX ,sizeY ,phicon,w,nIcons,y );
 546
 547         if ((nIcons == 2) && HIWORD(sizeX) && HIWORD(sizeY))
 548         {
 549           ret = ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, 1, sizeX & 0xffff, sizeY & 0xffff );
 550           if (!SUCCEEDED(ret)) return ret;
 551           ret = ICO_ExtractIconExW(lpwstrFile, phicon+1, nIndex, 1, (sizeX>>16) & 0xffff, (sizeY>>16) & 0xffff );
 552         } else
 553           ret = ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, nIcons, sizeX & 0xffff, sizeY & 0xffff );
 554         return ret;
 555 }
 556
 557 /***********************************************************************
 558  *           PrivateExtractIconsA                       [USER32.@]
 559  */
 560
 561 HRESULT WINAPI PrivateExtractIconsA (
 562         LPCSTR lpstrFile,
 563         INT nIndex,
 564         DWORD sizeX,
 565         DWORD sizeY,
 566         HICON * phicon,
 567         DWORD w,        /* [in] NOTE: 0 */
 568         UINT  nIcons,
 569         DWORD y )       /* [in] NOTE: 0x80 */
 570 {
 571         DWORD ret;
 572         LPWSTR lpwstrFile = HEAP_strdupAtoW(GetProcessHeap(), 0, lpstrFile);
 573
 574         ret = PrivateExtractIconsW(
 575                 lpwstrFile, nIndex, sizeX, sizeY, phicon, w, nIcons, y
 576         );
 577
 578         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 579         return ret;
 580 }
 581
 582 /***********************************************************************
 583  *           PrivateExtractIconExW                      [USER32.@]
 584  * NOTES
 585  *  if nIcons = -1 it returns the number of icons in any case !!!
 586  */
 587 HRESULT WINAPI PrivateExtractIconExW (
 588         LPCWSTR lpwstrFile,
 589         DWORD nIndex,
 590         HICON * phIconLarge,
 591         HICON * phIconSmall,
 592         UINT nIcons )
 593 {
 594         DWORD cyicon, cysmicon, cxicon, cxsmicon;
 595         HRESULT ret = 0;
 596
 597         TRACE("%s 0x%08lx %p %p 0x%08x\n",
 598         debugstr_w(lpwstrFile),nIndex,phIconLarge, phIconSmall, nIcons);
 599
 600         if (nIndex == 1 && phIconSmall && phIconLarge)
 601         {
 602           HICON hIcon[2];
 603           cxicon = GetSystemMetrics(SM_CXICON);
 604           cyicon = GetSystemMetrics(SM_CYICON);
 605           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 606           cysmicon = GetSystemMetrics(SM_CYSMICON);
 607
 608           ret = PrivateExtractIconsW ( lpwstrFile, nIndex, cxicon | (cxsmicon<<16),  cyicon | (cysmicon<<16),
 609           (HICON*) &hIcon, 0, 2, 0 );
 610           *phIconLarge = hIcon[0];
 611           *phIconSmall = hIcon[1];
 612           return ret;
 613         }
 614
 615         if (nIndex != -1)
 616         {
 617           if (phIconSmall)
 618           {
 619             /* extract n small icons */
 620             cxsmicon = GetSystemMetrics(SM_CXSMICON);
 621             cysmicon = GetSystemMetrics(SM_CYSMICON);
 622             ret = PrivateExtractIconsW ( lpwstrFile, nIndex, cxsmicon, cysmicon, phIconSmall, 0, nIcons, 0 );
 623           }
 624           if (phIconLarge )
 625           {
 626             /* extract n large icons */
 627             cxicon = GetSystemMetrics(SM_CXICON);
 628             cyicon = GetSystemMetrics(SM_CYICON);
 629             ret = PrivateExtractIconsW ( lpwstrFile, nIndex, cxicon, cyicon, phIconLarge, 0, nIcons, 0 );
 630           }
 631           return ret;
 632         }
 633
 634         /* get the number of icons */
 635         return PrivateExtractIconsW ( lpwstrFile, 0, 0, 0, 0, 0, 0, 0 );
 636 }
 637
 638 /***********************************************************************
 639  *           PrivateExtractIconExA                      [USER32.@]
 640  */
 641 HRESULT WINAPI PrivateExtractIconExA (
 642         LPCSTR lpstrFile,
 643         DWORD nIndex,
 644         HICON * phIconLarge,
 645         HICON * phIconSmall,
 646         UINT nIcons )
 647 {
 648         DWORD ret;
 649         LPWSTR lpwstrFile = HEAP_strdupAtoW(GetProcessHeap(), 0, lpstrFile);
 650
 651         TRACE("%s 0x%08lx %p %p 0x%08x\n",
 652         lpstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 653
 654         ret = PrivateExtractIconExW(lpwstrFile,nIndex,phIconLarge, phIconSmall, nIcons);
 655
 656         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 657         return ret;
 658 }
 659